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GEH-7282
g kV/kV2 MODBUS Communications OptionInstruction Manual
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Notice:
The information contained in this document is subject to change without notice.
GE makes no warranty of any kind with regard to this material, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose. GE shall not be liable for errors
contained herein or incidental consequential damages in connection with the furnishing, performance, or
use of this material.
This document contains proprietary information, which is protected by copyright. All rights are reserved.
No part of this document may be photocopied or otherwise reproduced without consent of GE.
Copyright (c) 2002 by GE
Published in a limited copyright sense. All rights, including trade secrets, are reserved.
Document Edition - First 3/2002
kV, kV2, MeterMate, and OPTOCOM are trademarks of GE.
MS-DOS and Windows are trademarks of Microsoft Corporation.
FCC Notice
FCC Part 15: Preventing Radio and Television Interference
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesirable
operation.
Changes or modifications to this equipment not expressly approved by the General Electric Company could
void the users authority to operate this equipment.
This instruction book does not cover all details or variations in equipment nor provide for every possiblecontingency to be met in connection with installation, operation, or maintenance. The equipment covered
by these instructions should be operated and serviced only by competent technicians familiar with good
safety practices, and these instructions are written for such personnel and are not intended as a substitute
for adequate training and experience in safe procedures for this type of equipment. Should further
information be desired, or should particular problems arise which are not covered sufficiently for the
purchasers purpose, the matter should be referred to GE Meter.
Warning
Any work on or near energized meters, meter sockets, or other metering equipment can present a
danger of electrical shock. All work should be performed only by qualified industrial electricians and
metering specialists in accordance with local utility safety practices and the procedures outlined in
the Handbook for Electricity Metering, Chapter 14 (available from Edison Electric Institute, 111119th Street NW, Washington, DC 20036). The information contained in this instruction book is
intended to be an aid to qualified metering personnel. It is not intended to replace the extensive
training necessary to install or remove meters from service.
Related Publications:
GEH-5081 GE kV Vector Electricity Meter Installation, Operation, and Maintenance Guide
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GEH-7277 GE kV2 Multi-Function Meter Product Description, Operating Instructions,
Maintenance Instructions, Upgrading, Site Analysis Guides, Diagrams
GEH-5084 MeterMate for DOS
Reading and Programming Software for GE Electronic Meters
GEH-5082 MeterMate for Windows
Program Creation Software for GE Electronic Meters
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Table of Contents
INTRODUCTION 5
KV/KV2 MODBUS FEATURES 5MODBUS Device Address 5Data Rate 5
INSTALLING THE KV/KV2 MODBUS IN THE KV OR KV2 METER 5
kV/kV2 MODBUS Installation 5
Installation on S-base Meters 6
Installation on A-base Meters 8
Option Board Compatibility 8
Introduction 8Revenue Guard Option Board 9I/O-1 Input/Output Option Board (Obsolete) 9I/O-2 Input/Output Option 9LP-1 Load Profile Option Board (Obsolete) 9LP-2 Load Profile Option Board 9kV/kV2 MODBUS Option Board 10
MeterMate Software Compatibility 10METER INSTALLATION 10
RENEWAL PARTS 11
kV/kV2 MODBUS Kits 11S-Base kV/kV2 MODBUS Kits 11A-base kV/kV2 MODBUS Kits 11
Other Renewal Parts: 12
APPENDIX A MODBUS OPERATION 13
Commands Supported 13
Password and Data Access 13
MODBUS Address 13
Accessing the Data Log 13
APPENDIX B REGISTER MAPS 15
kV Register Map: 15
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kV2 Register Map: 28
APPENDIX C - REPLACING THE CABLE CONNECTOR 43
APPENDIX D 44
Network Architecture and Wiring 44Modbus Wiring Rules Diagrams 44
Network Wiring and Construction 48
Wiring Requirements 49Type of Wire 49Termination 49Shield Grounding 49
Local Configuration of IEDs 50
Applying Power to the System 50
Trouble-Shooting Guide 51
APPENDIX E - METER PROGRAMMING PARAMETERS 52
Required Programming Parameters 52KV Meter 52KV2 Meter 52
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Introduction
The kV/kV2 MODBUS Communications Board
is an optional factory-supplied addition to the
kV or kV2Meter, or may be ordered in theform of a retrofit kit to upgrade Communication
Ready kV Meters or kV2 Meters. KV
Meters that are capable of being upgraded may be
identified by the words Modem Ready on theupper nameplate of the meter.
The kV/kV2 MODBUS Option Board is used toprovide two-way communication to the kV or
kV2 Meter and may be used on S-base, A-
base, and switchboard meters. It is available only
on Demand/LP or TOU version of the kV orkV2 Meter.
The kV/kV2 MODBUS Option Board may be
used in conjunction with other GE option boards,
which provide a three-phase power supply, loadprofile recording (kV only), and input/output
functions. If required, the flexibility of the kV
and kV2 Meters makes it possible to combineup to 3 option boards in a single meter.
RS-485/MODBUS provides a half-duplex, 2 -
wire, RS-485 interface for remote reading of the
kV/kV2 Meter. The baud rate is fixed at 19200
bps.
All kV Meters, including those with kV/kV2
MODBUS boards, are programmed using GEsMeterMate software program.
kV/kV2 MODBUSFeatures
The kV/kV2 MODBUS Option Board provides a
means of remotely reading the kV/kV2 Meter
over an electrically isolated, twisted pair, half-
duplex, RS-485 link. The kV/kV2 MODBUScontains only two programmable features,
discussed in more detail below.
MODBUS Device Address
The MODBUS board is delivered with a default
address of 15 (0x0F). Prior to installation into asystem, each device must be programmed with a
unique address. Refer to Appendix A, Register
Maps for the appropriate register address.
The MODBUS board must be programmed with a
password that matches that of the meter on whichit is installed. All MODBUS boards have a
default password of MASTER_012. It is
recommended that this same password beprogrammed into the meter on which the board is
installed. If a different password is desired, the
meter must be programmed with the desired
password using MeterMate software. TheMODBUS board must be set with the desired
password using the MODBUS interface. Refer to
Appendix A, Register Maps, for the appropriate
register address.
Data Rate
The kV/kV2 MODBUS Option is configured for
8 data bits, 1 stop bit, no parity, and a fixed baud
rate of 19200bps.
Installing the kV/kV2MODBUS in the kV orkV2 Meter
Warning: The kV/kV2 Metercontains lethal voltages. The meter must
be completely disconnected from any
external circuits and the carryovercapacitor completely discharged before
disassembly is attempted. Failure to
observe this practice can result inserious injury or death. For more
information refer to the appropriate
meter instruction book.
kV/kV2 MODBUS Installation
The kV/kV2 MODBUS Option Board can only be
installed in Modem Ready kV Meters. Thesemeters can be identified by the words Modem
Ready which are printed on the left side of the
meter nameplate. All kV2 meters are modemready.
Any combination of up to three (3) option boards
may be installed in the kV/ kV2 Meter at one
time. These include the I/O-2 Input/Output optionboard, the MIO Multi-Input/Output option board
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(kV2 only), the LP-2 Load Profile option board
(kV only), the kV/kV2 MODBUS Option Board,
and the RG-1 Revenue Guard option board. The
I/O-2 (or MIO), LP-2, and kV/kV2 MODBUS
Option Board can be combined in an option boardstack if necessary. See Figure 1 for details.
Figure 1: Option board stack
The Revenue Guard option board is not part of
this stack and is not affected by the presence of
other option boards.
All MODBUS boards are shipped with an RJ-11
cable connector. This connector will typically
need to be removed and replaced with a connectorappropriate for the network in which the
MODBUS meter will be installed. Appendix C
contains a wiring diagram to facilitate thisprocedure.
The kV/kV2 MODBUS board is installed asfollows:
1. If the meter is not disassembled, follow the
disassembly instructions described in the
appropriate meter instruction book.
2. Place the bezel face down on a soft, cleansurface to protect the nameplate and liquid
crystal display.
3. Remove the I/O (or MIO) and LP option
boards if they are present.
4. The I/O-1 and LP-1 option boards must notbe reused with the kV/kV2 MODBUS
board.
5. If the kV/kV2 MODBUS Option Board will
not be combined with either the I/O or LP
option boards proceed to step 9. If the
kV/kV2 MODBUS Option Board will be
installed with the I/O-2 and/or LP-2 option
boards proceed to the next step.
6. Place the kV/kV2 MODBUS Option Boardon a soft clean surface and install the four
(4) nylon spacers by gently pushing theminto the four (4) holes on the board.
Do not reuse nylon spacers. When
removed, a slight rounding of the spacer
occurs which can greatly decrease the
ability of the spacer to hold the option
board firmly in place.
7. If both the LP-2 and I/0-2 option boards areto be installed, the LP-2 option board must
be installed next. Install it by engaging the
26 pin connector pins between the kV/kV2
MODBUS Option Board and the LP-2
option board. Then, after lining up the nylonspacers on the kV/kV2 MODBUS Option
Board with the four (4) holes on the LP-2
board, snap the option board into place.
8. The I/O-2 option board may be installed
directly to the kV/kV2 MODBUS Option
Board if the LP-2 option board will not be
used or, it may be installed directly to the
LP-2 option board. Either way, the I/O-2
option board is installed in a similar mannerto the LP-2 option board described in step 6
above.
Note: The kV/kV2 MODBUS Option Boardmust always be installed as the inner mostoption board (the board closest to theMeters main board).
9. Depending on whether the installation isbeing made to an S-base or A-base meter,
install the appropriate cable assembly as
described below. For installation on a
switchboard kV/kV2 Meter, refer to the
switchboard meter instruction book, GEH-7271.
Installation on S-base Meters
While the meter is unassembled, the S-basecommunications cable assembly must be
installed. This cable assembly is installed in S-
base meters as follows:
1. With the kV Meter base facing you, locate
the lower of the two small knockouts andremove it (see Figure 6: Locating knockout
for cable assembly on S-Base meters).
Enlarge the hole to a diameter of 0.290inches. Make sure the resulting hole is
clean.
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2. Locate the end of the cable assembly with
the two small black connectors. Pass the
larger of the black connectors through the
knockout hole from the back side of the
meter base. Next, pass the smaller blackconnector through the same hole and pull
until the wire tie is in the slot and up against
the base. Make sure that the cable has beenbrought up on the outside of the shroud.
Figure 6: Locating knockout for cableassembly on S-Base meters
3. Check the headers on the kV/kV2MODBUS board to make sure that the pins
are not bent or out of position. Orient the
smallest black connector such that the
indexed (filled) hole in the black connectoris lined up with the missing pin in the 4 pin
header. Plug the connector assembly into
the header on the MODBUS board. Orient
the larger black connector such that theindexed (filled) hole in the black connector
is lined up with the missing pin in the 6 pin
header. Plug the connector assembly intothe header on the MODBUS board.
4. Attach the plastic connector holder as shownin Figure 7. The connector holder snaps
should extend through the holes in the
kV/kV2 MODBUS board and snap intoplace.
5. Check the 30 pin header on the meter board
to make sure that the pins are not bent or out
of position. Adjust any pins that are out of
alignment.
kV Meters with 26 pin headersinstead of 30 pin headers cannot be
retrofitted with the kV/kV2 MODBUSOption Board .
Figure 7 : Connector holder placement
6. With the kV/kV2 MODBUS Option Board
stack in hand, insert the tabs on thekV/kV2 MODBUS Option Board into theslots in the bezel (see figure 8).
Figure 8: Inserting option boards
7. Gently lower the board until the 30 pin
connector on the meter and the kV/kV2
MODBUS Option Board are engaged. Makesure that the two snaps engage the board.
8. Reassemble the meter, except for the cover,as described in the kV or kV2 Meter
instruction book. Insert and tighten a wire tiearound the cable assembly on the inside of
the meter base to retain the cable assembly.
9. Place the special label indicating the presence
of MODBUS communications on the side of
the meter shroud and replace the cover. SeeFigure .
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Figure 9 : Check "RS" box
Installation on A-base Meters
While the meter is unassembled, the A-basecommunications cable assembly must be
installed. This cable assembly is installed in A-
base meters as follows:
1. With the Meter base facing you, locate the
knockout on the left side of the base (see
Figure 10) and remove it by tapping it with apunch. Make sure the hole is clean and the
knockout parts are removed.
Figure 10: Locating knockout for cableassembly on A-Base meters
2. Insert the small connectors end of the cableassembly through the knockout from theoutside of the meter base until the grommet
contacts the knockout. Make sure that the
cable has been brought up on the outside ofthe shroud.
3. Insert the grommet into the knockout and
push until the grommet is fully seated.
4. Check the headers on the kV/kV2
MODBUS board to make sure that the pins
are not bent or out of position. Orient the
smallest black connector such that the
indexed (filled) hole in the black connectoris lined up with the missing pin in the 4 pin
header. Plug the connector assembly into
the header on the MODBUS board. Orientthe larger black connector such that the
indexed (filled) hole in the black connector
is lined up with the missing pin in the 6 pin
header. Plug the connector assembly intothe header on the MODBUS board.
5. Attach the plastic connector holder as shown
in Figure 7. The connector holder snaps
should extend through the holes in thekV/kV2 MODBUS board and snap into
place.
6. Follow the steps outlined in the S base
installation for inserting the stack into themeter. Then, reassemble the meter.
7. Place the special label indicating thepresence of MODBUS communications on
the side of the meter shroud and replace the
cover. See Figure .
Option Board Compatibility
Introduction
The kV/kV2 MODBUS Option Board may
be used in conjunction with the RG-1 Revenue
Guard, I/O-2 Input/Output, and the LP-2 LoadProfile option boards. In cannot be used with
either the I/O-1 Input/Output, the LP-1 Load
Profile option boards or the kV/kV2 Internalmodem board. The MODBUS is used in lieu of
the kV/kV2 Internal Modem board.
The kV/kV2 MODBUS Option Board is
always installed directly onto the kV/kV2Meter. Either the I/O-2 Input/Output or the LP-2
Load Profile option board may then connect tothe kV/kV2 MODBUS Option Board ifdesired. If all three option boards are used, the
option boards must be installed in the following
order:
1. kV/kV2 MODBUS Option Board
2. LP-2 Load Profile option board (kV only)
3. I/O-2 Input/Output option board (or MIO
board (kV2 only)
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Revenue Guard Option Board
The Revenue Guard option board may be used in
conjunction with any other kV/kV2 Meter
option board including the kV/kV2MODBUS Option Board.
I/O-1 Input/Output Option Board(Obsolete)
The I/O-1 Input/Output option board (GE part #
9938226002) is now obsolete and has been
replaced by the I/O-2 Input/Output option board
(GE part # 9938226004). The I/O-1 option board
cannot be used with the kV/kV2 MODBUSOption Board. If I/O is needed in a kV Meter
with a modem, the I/O-2 option board must be
used. For the kV2 either the I/O-2 or the MIOInput/Output option can be used. See Table 1:I/O-1 Compatibility for more details.
I/O-1 LP-1 LP-2 kV/kV2
MODBUS
Table 1: I/O-1 Compatibi lity
I/O-2 Input/Output Option
The I/O-2 Input/Output option board (GE part #
9938226004) is a direct replacement for the I/O-1
option board (see above) and was designed to becompatible with the kV/kV2 MODBUS Option
Board. It may be installed directly onto the
kV/kV2 Meter, the kV/kV2 MODBUSOption Board, or to the LP-2, Load Profile option
board. See Table 2: I/O-2 Compatibility for more
details.
Option Boards
I/O-2 LP-1
(kV only)
LP-2
(kV only)
kV/kV2
MODBUS
Modem ReadykV only Modem ReadykV only
Table 2: I/O-2 Compatibi lity
LP-1 Load Profile Option Board(Obsolete)
The LP-1 Load Profile option board (GE part #
9938348005) is now obsolete and has been
replaced by the LP-2 Load Profile option board
(GE part # 9938348007). The LP-1 option boardcannot be used with the kV/kV2 MODBUS
Option Board. For use with the kV/kV2MODBUS board in a kV Meter, the LP-2
option board must be used. See Table 3: LP-1
Compatibility for more details.
Option Boards
LP-1
(kV only)
I/O-1
(kV only)
I/O-2 kV/kV2
MODBUS
Table 3: LP-1 Compatibi lity
LP-2 Load Profile Option Board
The LP-2 Load Profile option board (GE part #
9938348007) is a direct replacement for the LP-1
option board (see above) and was designed to be
compatible with the kV/kV2 MODBUS OptionBoard. It may be installed directly onto the kV
Meter or the kV/kV2 MODBUS Option Board.
See Table 4: LP-2 Compatibility for more details.
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Option Boards
LP-2
(kV only)
I/O-1
(kV only)
I/O-2 kV/kV2
MODBUS
Modem ReadykV only Modem ReadykV only
Table 4: LP-2 Compatibil ity
kV/kV2 MODBUS Option Board
The kV/kV2 MODBUS Option Board may be
used in combination with the I/O-2 Input/Output,
and LP-2 Load Profile option boards. See Table5: kV/kV2 MODBUS Compatibility for more
details.
Option Boards
KV/KV2 MODBUS
Modem Ready kV
Or kV2
I/O-2
(or MIO
for kV2)
LP-2
(kV only)
Table 5: kV/kV2 MODBUS Compatibil ity
MeterMate SoftwareCompatibility
The kV/kV2 MODBUS Option Board iscompatible with the following software:
MeterMate Version 2.12 or greater. Note that
this software will ignore the MODBUS board.
There are restrictions on the way a kV/kV2 meter
must be programmed in order to operate correctly
with the MODBUS board. See Appendix C for
details.
Meter Installation
The kV/kV2 Meter must be connected to theexternal communications device through a means
which will provide both a secure connection and
ease of disconnection for troubleshooting, meter
change out, etc.
All kV/kV2 Meters with kV/kV2 MODBUS
option are supplied with an insulatedcommunications cable which extends
approximately 30 inches out the base on S-base
meters and out of the side of the case on A-basemeters. The communications cable will be
terminated in an RJ-11, which may be replaced by
the required connector following the wiring
diagram shown in Appendix B.
The communications cable should exit the S-base
meter socket enclosure by the most direct means
and be connected to the customer providedcommunications equipment external to the meter
enclosure. Usual practice has a short conduit
nipple extending from the meter enclosure to aseparate, dedicated enclosure where the external
modem is located.
Important: Under no condition should
the communications line be run in a conduit
with power lines or exit the meter enclosure
via the same nipple as the power lines. Also,
for the case where other optional signal lines
are taken from the kV/kV2 Meter, these
other lines should not be bundled with either
the power lines or the phone line.
For A-base meters, the connection to the
customer supplied communications equipmentshould be done in a similar manner. The
communications cable for the A-base terminalblock should be taken immediately to a separate
enclosure dedicated to this specific application.
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Figure 14: kV/kV2 MODBUS LED location
An LED will illuminate when the kV/kV2Meters MODBUS board is powered up. The
LED will flash for approximately 15 seconds.During this period, communications is not
possible. Immediately after the LED stops
flashing, the meter display should briefly indicate
busy as the MODBUS board reads basic
information from the meter. The LED will alsolight each time the MODBUS board has
established communications with the meter for
the purposes of acquiring data. By monitoring thisLED (as well as any LEDs on the external
modem), correct operation of the kV/kV2
MODBUS board can be verified during meterinstallation.
Renewal Parts
kV/kV2 MODBUS Kits
There are two kV/kV2 MODBUS kits that maybe ordered to retrofit a Modem ready kV
Meter or a kV2. Modem ready kV Meters
will have Modem Ready printed on the meter
nameplate. If the kV Meter nameplate does not
have this designation, the meter cannot be
retrofitted with a kV/kV2 MODBUS board.Any kV2 meter can be retrofitted with a
MODBUS board.
S-Base kV/kV2 MODBUS Kits
If a communications cable with a RJ-11 connector
is desired, order GE part number 9938627009.
This kit contains the following material:
Component GE Part # Qty
kV/kV2 MODBUScircuit board
99384980050 1
Cable assembly 9938583001 1
Connector holder 9938622001 1
PC board spacers 9935026005 4Wire tie 9689597010 1
MODBUS Label 9938782001 1
Instruction sheet GEI- XXXXX 1
A-base kV/kV2 MODBUS Kits
If a communications cable with an RJ-11connector is desired, order GE part number
938627010. This kit contains the following
material:
Component GE Part # Qty
kV/kV2 MODBUScircuit board
9938498050 1
Cable assembly 9938583004 1
Connector holder 9938622001 1
PC board spacers 9935026005 4
MODBUS Label 9938782001 1
Instruction sheet GEI- XXXXX 1
Note: When the kV/kV2 Meter is first
energized at the installation site, the carrier
detect LED will blink to indicate that the kV/kV2
MODBUS board is properly powered. After the
kV/kV2 MODBUS board is initialized, the
carrier detect LED will go out. If the LED does
not illuminate, or stays illuminated for more
than 5 seconds, the kV/kV2 MODBUS board is
defective and should be replaced.
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Other Renewal Parts:
Component GE Part # Qty
CommunicationsCable for S-Base
Meters, RJ-11
connector
9938583002 1
Communications
Cable for A-BaseMeters,
RJ-11 connector
9938583004 1
PC Board Spacers 9935026105 100
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Appendix A MODBUS Operation
Commands Supported
The MODBUS protocol specification can be obtained by visiting the Website http://www.modbus.org/default.htm.
The kV/kV2 MODBUS board supports a subset of the standard MODBUS commands. These are:
0x03 Read Holding Registers
0x04 Read Input Registers
0x06 Preset Single Register0x16 Preset Multiple Registers
Password and Data Access
The kV/kV2 meters do not, by themselves, support MODBUS; the native protocol for these meters is PSEM (ANSIC12.18) and AMRA Tables (ANSI C12.19). Consequently, the MODBUS board must convert MODBUS requeststo PSEM requests in order to retrieve data from the meter. Meter responses must be translated back to MODBUS
protocol before they are transmitted back to the MODBUS host. This operation is transparent to the MODBUS user
and the information is provided only as background. KV/kV2 meters are generally password-protected. In order for
the MODBUS board to retrieve meter data, it must know the meter password. MODBUS boards are shipped from
the factory with a default meter password of MASTER_012. This is stored in the MODBUS board as theequivalent sequence of hexadecimal digits. GE recommends that the user program the same password into the
meter. However, if the user wants to use a different password, it may be changed in the meter using the GE
programming software (MeterMate) and then must also be changed in the MODBUS board by writing the desiredpassword to the sequence of registers reserved for same (see register maps).
The set of data available through the MODBUS interface is a subset of the data contained in the meter(s) and
accessible through the PSEM interface. In addition, in order to gain access to the full set of MODBUS registers
listed in Appendix B, some of the meter parameters must always be programmed with predetermined, fixed values.If these fixed programming parameters are changed, behavior of the MODBUS interface is undetermined.
MODBUS Address
The MODBUS board is shipped with a default MODBUS address of 15 (0x0F). Note that a full, two-byte register is
reserved for the address; however, only the low-order byte is actually used. Each device must be assigned a newaddress that is unique for the network in which it will be installed. Valid addresses may be from 1 to 247; all other
values are reserved. The MODBUS board recognizes the universal address of 0x00. This address may be used to
communicate with individual MODBUS devices in the event that the individual address is lost or forgotten. In order
to reset the individual MODBUS address, the device must be the only one in the communication path. Then amessage can be addressed to the universal address (0x00) to tell the device to set its individual address to the desired
value. The user should then verify that the device will respond to its new address before installing it in the larger
network with other MODBUS devices.
Accessing the Data Log
Data log information may be retrieved an interval at a time. The default configuration for the interval length is 15
minutes. In general, the host system will poll the meter at regular intervals to obtain the most recent data log interval
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and the host software will keep track of the last interval read. The MODBUS board keeps track of the most recent
interval recorded; this is available in register 0x2802.
In order to retrieve a specific interval from the data log, the host software must first write the number of the desired
interval into the Data Log Interval Selector register (0x2801). Intervals are numbered from 1 to 2880, therebyproviding up to 30 days of 15-minute interval data. Fewer intervals will be available when fewer than 30 days have
elapsed since recording began.
When the MODBUS board has successfully transferred this interval data from the meter into its own buffers, it will
update the Data Log Last Read register (0x2800) to indicate that the data is now available. The host software can
then retrieve the data by reading the desired number of channels beginning at register 0x2807.
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Appendix B Register Maps
The entries in the register maps that follow correspond directly to table entries in the respective meters. MODBUS register ad
sequentially to the data items as they appear in the ANSI tables within the meters.
kV Register Map:
Dynamic Value Registers (R3 Type)
Data Type: Integer =Signed Integer (One 16-bit registers), Real =Floating Point Format (Two 16-bit registers)
Dynamic Value Registers
RegisterAddress
DDE Item Name (Mnemonic) Contents Units
3 ENERGY
2000 RESET_COUNT Number of demand resets Dimensionless
2001 KWH_IMP_TOTAL 3 KWH Import (Delivered) kWh
2003 KVAH_TOTAL 3 KVAH kVAh
2005 to
200A
UNUSED
RESERVED FOR kV2
---- ----
200B KW_MAX_DATE_IMP Date of occurrence of import (delivered)
kW max
MM/DD/YYYY
200D KW_MAX_TIME_IMP Time of occurrence of import (delivered)
kW max
HH:MM:SS.xxx
200F CUM_KW_IMP Cumulative import kW kW CUM
2011 KW_MAX_IMP 3 KW max Import kW
2013 KVA_MAX_DATE_IMP Date of occurrence of Import (delivered)
kW max
MM/DD/YYYY
2015 KVA_MAX_TIME_IMP Time of occurrence of Import (delivered) HH:MM:SS.xxx
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
kW max
2017 CUM_KVA_IMP Cumulative Import (delivered) kW kW CUM
2019 KVA_MAX_TOTAL 3 KW max Import (delivered) kW
201B to
2046
UNUSED
RESERVED FOR kV2
---- ----
2047 to
215E
Space reserved for future TOU metering. These registers (bins) will store energy/demand according to a specific
calendar.
POWER FACTORS
215F PF_DMND 3 PF @ last demand Dimensionless & positive
2161 to
2168
UNUSED ---- ----
3 DEMAND &POWER
2169 CLOCK_DATE Clock date 1st 16 bitsMonth / Day (MM/DD/xx
FF00h Month
(1 =J anuary, 2 =February,..., 12 =December)
00FFh Day(1 to 31 in steps o1)
2nd 16 bitsYear (xx/xx/YYYY)
FFFFh(1990 to 2089 insteps of 1)
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
NOTE: If the date has nev
been set then all 32 bits w
be 1.
216B CLOCK_TIME Clock time 1st 16 bits
Hours / Minutes
(HH:MM:xx.xxx)
FF00h Hours(0=12am, 1=1am12=12pm,...,23=11pm)
00FFh Minutes(0 to 59 in steps o1)2nd 16 bits
Seconds
(xx:xx:SS.SSS)
FFFFh(0 =00.000 s,1=00.001 s,59999=59.999 s)
NOTE: If the time has nev
been set then all 32 bits w
be 1.
216D TIME & DATE QUAL. Qualifier for date and time b0 - b2: Day of week. (0 =
Sunday6 =
Saturday
b3: Daylight savings time= True)
b4: Greenwich Mean Tim(1 = True)
b5: Time zone offset
applied (1 = True)
b6: Adjustment for daylig
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
savings time (1 = True)
b7-b15: Unused
216E DMND_DATE Last demand date 1st 16 bitsMonth / Day (MM/DD/xx
FF00h Month
(1 =J anuary, 2 =Februa.., 12 =Decem)
00FFh Day(1 to 31 in steps o1)
2nd 16 bits
Year (xx/xx/YYYY)
FFFFh(1990 to 2089 in steps o
1)NOTE: If the date has nev
been set then all 32 bits wbe 1.
2170 DMND_TIME Last demand time 1st 16 bits
Hours / Minutes(HH:MM:xx.xxx)
FF00h Hours
(0=12am, 1=1am12=12pm,...,23=11pm)
00FFh Minutes(0 to 59 in steps 1)
2nd 16 bitsSeconds (xx:xx:SS.SSS)
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
FFFFh(0 =00.000 s,1=00.001 s,59999=59.999 s)
NOTE: If the time has nev
been set then all 32 bits w
be 1.
2172 KW_IMP_DMND_TOTAL 3 KW IMPORT (delivered) (demand) kW
2174 KVA_DMND_TOTAL 3 KVA (demand) kVA
2176 to
217B
UNUSED
RESERVED FOR kV2
---- ----
217C KW_TOTAL_IMP 3 KW_IMP kW
217E KVA_TOTAL 3 KVA kVA
2180 to
2185
UNUSED
RESERVED FOR kV2
---- ----
CURRENT AND VOLTAGE
2186 to21ED
UNUSEDRESERVED FOR kV2
---- ----
21EE CURRENT_ANGLE_PHA
21F0 VOLTAGE_ANGLE_PHA
21F2 CURRENT_ANGLE_PHB
21F4 VOLTAGE_ANGLE_PHB
21F6 CURRENT_ANGLE_PHC
21F8 VOLTAGE_ANGLE_PHC
21FA CURRENT_MAG_PHA amps
21FC VOLTAGE_MAG_PHA volts
21FE CURRENT_MAG_PHB amps
2200 VOLTAGE_MAG_PHB volts
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
2202 CURRENT_MAG_PHC amps
2204 VOLTAGE_MAG_PHC volts
2206 DU_PF %
2208 DIAG_1_COUNT Polarity, Cross Phase,
Reverse Energy Flow
2209 DIAG_2_COUNT Voltage Imbalance
220A DIAG_3_COUNT Inactive Phase Current
220B DIAG_4_COUNT Phase Angle Alert
220C DIAG_5_PHA_COUNT High Distortion
220D DIAG_5_PHB_COUNT High Distortion
220E DIAG_5_PHC_COUNT High Distortion
220F DIAG_5_TOTAL_COUNT High Distortion
2210 DIAG_6_COUNT Under Voltage, Phase A
2211 DIAG_7_COUNT Over Voltage, Phase A
2212 DIAG_8_COUNT
Single byte counts of how many times
cautions occurred.
High Neutral Current
2213 CAUTION System's Cautions b0: Cross phase, Rev ener
Flowb1: Phase Voltage Alert
b2: Inactive Phase Curren
b3: Phase Angle Alertb4: Distortion Alert
b5: Under voltage, Phase A
b6: Overvoltage, Phase A
b7: High Neutral Current
b8b15: Undefined
2214 DISTORTION_KVAH Distorted Apparent Power kVAh
2216 METER_MODE bit 0: METERING MODEbit 1: TEST MODE
bit 2-15: unused
2217 STD_STATUS Status Flags bit 0: UNPROGRAMME
bit 1: CONFIGURATION
bit 2: SELF_CHK_ERRO
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
bit 3: RAM_FAILURE
bit 4: ROM_FAILURE
bit 5:
NONVOL_MEM_FAILUbit 6: CLOCK_ERROR
bit 7:
MEASUREMENT_ERRObit 8:
LOW_BATTERY_ERRO
bit 9:
LOW_LOSS_POTENTIA
bit 10:DEMAND_OVERLOAD
bit 11: POWER_FAILUR
bit 12-15: undefined
2218 MFG_STATUS Manufacturer's Status b0: DSP Errorb1: Option Board Errorb2: Watchdog Time-out E
b3: Received kWh Cautio
b4: Leading kvarh Caution
bits 5-15: Unused
DATA LOGGER
2800 DLOG_LAST_READ Data Log Latest Read Interval
2801 DLOG_INTERVAL_SELECT Data Log Interval Selector
2802 DLOG_LATEST Data Log Last Complete Interval
2803 DLOG_LATEST _DATE Data Log Latest Sample Date 1st 16 bits
Month / Day (MM/DD/xx
FF00h Month
(1 =J anuary, 2
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
February,..., 12 December)
00FFh Day
(1 to 31 in steps1)
2nd 16 bitsYear (xx/xx/YYYY) FFFFh
(1990 to 2089 insteps of 1)
NOTE: If the date has nevbeen set then all 32 bits w
be 1.
2805 DLOG_LATEST _TIME Data Log Latest Sample Time 1st 16 bits
Hours / Minutes
(HH:MM:xx.xxx) FF00h Hours
(0=12am,1=1am,...,12=12pm,...,23=11pm)
00FFh Minutes(0 to 59 in steps1)
2nd 16 bits
Seconds (xx:xx:SS.SSS)
FFFFh
(0 =00.000 s,
1=00.001 s,59999=59.999 s
NOTE: If the time has nevbeen set then all 32 bits wi
be 1.
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
2807 Channel 1 3 kW Demand
2809 Channel 2 3 kVA Demand
280B Channel 3 3 PF @ last demand
280D Channel 4 3 kWh
280F Channel 5 3 kVAh
2811 Channel 6 Not used in kV
2813 Channel 7 Not used in kV
2815 Channel 8 Not used in kV
OTHER STATUS (future!!!)
A value of 0 indicates that no valid interval data is present in the MODBUS board. A value of 0 indicates that the meter has not yet recorded any interval data.
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Fixed Value Registers (R4 TYPE)
Fixed Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units/Value/Range
3000 MODBUS_ADDR Modbus Address Dimensionless
3001 COMM_BOARD_PASSWORD Must match the meters master
password; default is MASTER_012
(hexadecimal 4D 41 53 54 45 52 5F30 31 32)
10-byte ASCII
3006 58 REGISTERS RESERVED FOR EEPROM DATA
3040 PRODUCT_ID Product Id 1
3041 MODBUS_REV Modbus S/W Revision 4 character string with 2 place decim
3043 MANUFACTURER Name of manufacturer "GE "
3045 ED_MODEL Meter Model "kV2 "
3049 METER_HW_REV Meter H/W Revision and Version
number
MSB implies functional differences
implies product corrections or
improvements
304A METER_SW_REV Meter Firmware Revision number MSB implies functional differences
implies product corrections or
improvements
304B SERIAL_NUM Serial Number alphanumeric (8 Registers)
3053 IDENTIFICATION ID of the kV2 meter 20 ASCII characters
306C SECURITY_FLAGS Prevent MeterMate from writing into
Canadian meter in the field
b0: Meter Sealed if set
b1: If set, demand resets are prevenb2: If set, allows access with any (r
password restricted to modifying
thecustomer/reader password(s) i
table only.
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Fixed Setpoint Registers (GENERAL)
RegisterAddress
DDE Item Name (Mnemonic) Contents Units/Value/Range
3100 LENGTH_OF_DEMAND_INTERVAL Demand Intervallength Minutes5, 6, 10, 12, 15, 20, 30 or 60
3101 NO_OF_SUB_INTERVAL Number of sub-
intervals
Number of subs
1 to 15, valid combinations of demand interva
length and number of subintervals listed belowSub length No. of subs
5 1, 5
6 1, 2, 3, 6
10 1, 2, 5, 1012 1, 2, 3, 4, 6
15 1, 3, 5
20 1, 2, 4, 5, 10
30 1, 2, 3, 5, 6, 1060 1, 2, 3, 4, 5, 6, 10
DATA LOGGER
3200 DATA_LOG_MEM_ LENGTH Reserved bytes for Data Logger in kV meter
3202 DATA_LOG_FLAGS Reserved
3203 DATA_LOG_FORMAT Reserved
3204 NBR_BLOCKS Number of blocks
3205 NBR_INTS_PER_BLOCK Number of Intervals per block
3206 NBR_CHANNELS Number of channels
3207 LOG_INTERVAL Log Interval lengthMSB has to be
masked
Minutes1, 5, 10, 15, 30, or 60
Commands or Procedures
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Command
Register
Address
DDE Item Name
(Mnemonic)
Contents Units/Value R/W Data
Type
4000 CLEAR_DMND Clear Watt Demand 0 WO Discrete
4001 MTR_INITIALIZE Initialize meter 0 WO Discrete4002 CLEAR_ERROR Clear Meter Errors 0 WO Discrete
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kV2 Register Map:
Dynamic Value Registers (R3 Type)
Data Type: Integer =Signed Integer (One 16-bit registers), Real =Floating Point Format (Two 16-bit registers)
Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
3 ENERGY
2000 RESET_COUNT Number of demand resets Dimensionless
2001 KWH_IMP_TOTAL 3 KWH Import (Delivered) kWh
2003 KWH_EXP_TOTAL 3 KWH Export (received) kWh
2005 KVARH_LG_TOTAL 3 KVARH lag kVARh
2007 KVARH_LD_TOTAL 3 KVARH lead kVARh
2009 KVAH_TOTAL 3 KVAH kVAh
200B KW_MAX_DATE_IMP Date of occurrence of import
(Delivered) kW max
MM/DD/YYYY
200D KW_MAX_TIME_IMP Time of occurrence of import
(Delivered) kW max
HH:MM:SS.xxx
200F CUM_KW_IMP Cumulative import (Delivered) kW kW CUM
2011 KW_MAX_IMP 3 KW max Import kW
2013 KW_MAX_DATE_EXP Date of occurrence of Export
(received) kW max
MM/DD/YYYY
2015 KW_MAX_TIME_EXP Time of occurrence of Export
(received) kW max
HH:MM:SS.xxx
2017 CUM_KW_EXP Cumulative Export (received) kW kW CUM
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
2019 KW_MAX_EXP 3 KW max Export (received) kW
201B KVAR_LG_MAX_DATE Date of occurrence of kvar lag max MM/DD/YYYY
201D KVAR_LG_MAX_TIME Time of occurrence of kvar lag max HH:MM:SS.xxx
201F CUM_ KVAR_LG_MAX Cumulative kvar max lag kW CUM
2021 KVAR_LG_MAX_TOTAL 3 KVAR lag max kVAR
2023 KVAR_LD_MAX_DATE Date of occurence of kvar max lead MM/DD/YYYY
2025 KVAR_LD_MAX_TIME Time of occurence of kvar max lead HH:MM:SS.xxx
2027 CUM_ KVAR_LD_MAX Cumulative kvar max lead kW CUM
2029 KVAR_LD_MAX_TOTAL 3 KVAR lead max kVAR 202B KVA_MAX_DATE_TOTAL Date of occurence of import
(Delivered) kVA max
MM/DD/YYYY
202D KVA_MAX_TIME_TOTAL Time of occurence of import
(Delivered) kVA max
HH:MM:SS.xxx
202F CUM_KVA_TOTAL Cumulative kVA max kVACUM
2031 KVA_MAX_TOTAL 3 KVA max kVA
2033 to2042
Reserved for later defined coincident demand These are registers keeping the value of selected current demandscoincident to the registration of maximum demands. Two registers for each maximum demand.
2043 KW_IMP_AT_KVA_MAX 3 KWimp @ KVAmax kW
2045 KW_EXP_AT_KVA_MAX 3 KWexp @ KVAmax kW
2047
to
215E
Space reserved for future TOU metering. These registers (bins) will store energy/demand according to a specific
calendar. Whether we will go with TOU metering for CAM remains to be discussed.
POWER FACTORS
215F PF_DMND 3 PF @ last demand Dimensionless
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
2161 PF_AT_KVA_MAX 3 PF @ KVAmax Dimensionless
2163 PF_A 1 PF, Phase A Dimensionless 2165 PF_B 1 PF, Phase B Dimensionless
2167 PF_C 1 PF, Phase C Dimensionless
3 DEMAND &POWER
2169 CLOCK_DATE Clock date 1st 16 bits
Month / Day (MM/DD/xxxx)
FF00h Month(1 =J anuary, 2 =February,..., 12 =December)
00FFh Day
(1 to 31 in steps of1)2nd 16 bitsYear (xx/xx/YYYY)
FFFFh
(1990 to 2089 insteps of 1)
NOTE: If the date has never
been set then all 32 bits will
be 1.
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
216B CLOCK_TIME Clock time 1st 16 bits
Hours / Minutes
(HH:MM:xx.xxx)
FF00h Hours(0=12am,1=1am,...,12=12pm,...,23=11pm)
00FFh Minutes(0 to 59 in steps of1)
2nd 16 bits
Seconds (xx:xx:SS.SSS)
FFFFh(0 =00.000 s,1=00.001 s,59999=59.999 s)
NOTE: If the time has neverbeen set then all
32 bits will be 1.
216D TIME & DATE QUAL. Qualifier for date and time b0 - b2: Day of week. (0 =
Sunday6 =
Saturday
b3: Daylight savings time (1
= True)b4: Greenwich Mean Time
(1 = True)
b5: Time zone offset
applied (1 = True)b6: Adjustment for daylight
savings time (1 = True)
b7-b15: Unused
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
216E DMND_DATE Last demand date 1st 16 bits
Month / Day (MM/DD/xxxx)
FF00h Month
(1 =J anuary, 2 =February,..., 12 =December)
00FFh Day
(1 to 31 in steps of1)2nd 16 bits
Year (xx/xx/YYYY) FFFFh
(1990 to 2089 insteps of 1)
NOTE: If the date has never
been set then all 32 bits willbe 1.
2170 DMND_TIME Last demand time 1st 16 bitsHours / Minutes
(HH:MM:xx.xxx)
FF00h Hours(0=12am,1=1am,...,12=12pm,...,23=11pm)
00FFh Minutes(0 to 59 in steps of1)
2nd 16 bitsSeconds (xx:xx:SS.SSS)
FFFFh(0 =00.000 s,1=00.001 s,
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
59999=59.999 s)NOTE: If the time has never
been set then all 32 bits will
be 1.
2172 KW_IMP_DMND_TOTAL 3 kW IMPORT (Delivered)(demand)
kW
2174 KW_EXP_DMND_TOTAL 3 kW EXPORT (RECEIVED)(demand)
kW
2176 KVAR_LG_DMND_TOTAL 3 kVAR lag (demand) kVAR
2178 KVAR_LD_DMND_TOTAL 3 kVAR lead (demand) kVAR
217A KVA_DMND_TOTAL 3 kVA (demand) kVA
217C KW_TOTAL_IMP 3 kW_IMP kW
217E KW_TOTAL_EXP 3 kW_EXP kW
2180 KVAR_TOTAL_LG 3 kVAR_LAG kVAR
2182 KVAR_TOTAL_LD 3 kVAR_LEAD kVAR
2184 KVA_TOTAL 3 kVA kVA
1 POWER & FREQUENCY
2186 KW_FUND_HARM_A kW
2188 KW_FUND_HARM_B kW
218A KW_FUND_HARM_C kW
218C KW_A 1 kW, Phase A kW
218E KW_B 1 kW, Phase B kW
2190 KW_C 1 kW, Phase C kW
2192 KVAR_FUND_HARM_A
2194 KVAR_FUND_HARM_B
2196 KVAR_FUND_HARM_C
2198 KVAR_A 1 kVAR, Phase A kVAR
219A KVAR_B 1 kVAR, Phase B kVAR
219C KVAR_C 1 kVAR, Phase C kVAR
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
219E DISTORTION_KVA_A
21A0 DISTORTION_KVA_B
21A2 DISTORTION_KVA_C
21A4 APPARENT_KVA_A 1 kVA, Phase A kVA
21A6 APPARENT_KVA_B 1 kVA, Phase B kVA
21A8 APPARENT_KVA_C 1 kVA, Phase C kVA
CURRENT AND VOLTAGE
21AA V_FUND_HARM_A volts
21AC V_FUND_HARM_B volts
21AE V_FUND_HARM_C volts
21B0 VOLTS_A VOLTAGE L-N phase A-N volts
21B2 VOLTS_B VOLTAGE L-N phase B-N volts 21B4 VOLTS_C VOLTAGE L-N phase C-N volts
21B6 V_FUND_HARM_AB volts
21B8 V_FUND_HARM_BC volts
21BA V_FUND_HARM_CA volts
21BC VOLTS_AB VOLTAGE L-L phase A-B volts
21BE VOLTS_BC VOLTAGE L-L phase B-C volts
21C0 VOLTS_CA VOLTAGE L-L phase C-A volts
21C2 AMPS_FUND_HARM_A amps
21C4 AMPS_FUND_HARM_B amps
21C6 AMPS_FUND_HARM_C amps
21C8 AMPS_A Current Phase A amps
21CA AMPS_B Current Phase B amps 21CC AMPS_C Current Phase C amps
21CE AMPS_N Current Neutral amps
21D0 PF 3 PF DimensionlessPositive =lagging
Negative =leading
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
21D2 FREQUENCY 3 Frequency Hz
21D4 TDD_A Total demand distortion, Phase A %
21D6 TDD_B Total demand distortion, Phase B %
21D8 TDD_C Total demand distortion, Phase C %
21DA ITHD_A Current, total harm. dist., Phase A %
21DC ITHD_B Current, total harm. dist.,. Phase B %
21DE ITHD_C Current, total harm. dist., Phase C %
21E0 VTHD_A Voltage, total harm. dist., Phase A %
21E2 VTHD_B Voltage, total harm. dist., Phase B %
21E4 VTHD_C Voltage, total harm. dist., Phase C %
21E6 DISTORTION_PF_A Distortion Power Factor, Phase A %
21E8 DISTORTION_PF_B Distortion Power Factor, Phase B %
21EA DISTORTION_PF_C Distortion Power Factor, Phase C %
21EC DISTORTION_PF_TOTAL Total distortion power factor %
21EE CURRENT_ANGLE_PHA
21F0 VOLTAGE_ANGLE_PHA
21F2 CURRENT_ANGLE_PHB
21F4 VOLTAGE_ANGLE_PHB
21F6 CURRENT_ANGLE_PHC
21F8 VOLTAGE_ANGLE_PHC
21FA CURRENT_MAG_PHA amps
21FC VOLTAGE_MAG_PHA volts
21FE CURRENT_MAG_PHB amps
2200 VOLTAGE_MAG_PHB volts
2202 CURRENT_MAG_PHC amps 2204 VOLTAGE_MAG_PHC volts
2206 DU_PF %
2208 DIAG_1_COUNT Polarity, Cross Phase,Reverse Energy Flow
2209 DIAG_2_COUNT
Voltage Imbalance
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
220A DIAG_3_COUNT Inactive Phase Current
220B DIAG_4_COUNT Phase Angle Alert
220C DIAG_5_PHA_COUNT High Distortion
220D DIAG_5_PHB_COUNT High Distortion
220E DIAG_5_PHC_COUNT High Distortion
220F DIAG_5_TOTAL_COUNT High Distortion
2210 DIAG_6_COUNT Under Voltage, Phase A
2211 DIAG_7_COUNT Over Voltage, Phase A
2212 DIAG_8_COUNT
Single byte counts of how manytimes cautions occurred.
High Neutral Current
2213 CAUTION System's Cautions b0: Cross phase, Rev energy
Flow
b1: Phase Voltage Alertb2: Inactive Phase Current
b3: Phase Angle Alert
b4: Distortion Alertb5: Under voltage, Phase A
b6: Overvoltage, Phase A
b7: High Neutral Current
b8b15: Undefined
2214 RESERVED
2215 RESERVED
2216 METER_MODE bit 0: METERING MODE
bit 1: TEST MODEbit 2-15: unused
2217 STD_STATUS Status Flags bit 0: UNPROGRAMMEDbit 1: CONFIGURATION
bit 2: SELF_CHK_ERROR
bit 3: RAM_FAILUREbit 4: ROM_FAILURE
bit 5:
NONVOL_MEM_FAILURE
bit 6: CLOCK_ERROR
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
bit 7:
MEASUREMENT_ERROR
bit 8:
LOW_BATTERY_ERRORbit 9:
LOW_LOSS_POTENTIAL
bit 10:DEMAND_OVERLOAD
bit 11: POWER_FAILURE
bit 12-15: undefined
2218 MFG_STATUS Manufacturer's Status b0: DSP Error
b1: Option Board Error
b2: Watchdog Time-out Error
b3: Received kWh Cautionb4: Leading kvarh Caution
bits 5-15: Unused
DATA LOGGER
2800 DLOG_LAST_READ Data Log Latest Read Interval
2801 DLOG_INTERVAL_SELECT Data Log Interval Selector
2802 DLOG_LATEST Data Log Last Complete Interval
2803 DLOG_LATEST _DATE Data Log Latest Sample Date 1st 16 bitsMonth / Day (MM/DD/xxxx)FF00h Month
(1 = January, 2 = February,..., 12= December)00FFh Day
(1 to 31 in steps of 1)2nd 16 bitsYear (xx/xx/YYYY)FFFFh(1990 to 2089 in steps of 1)
NOTE: If the date has never
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
been set then all 32 bits will be1.
2805 DLOG_LATEST _TIME Data Log Latest Sample Time 1st 16 bitsHours / Minutes
(HH:MM:xx.xxx)
FF00h Hours(0=12am, 1=1am,...,
12=12pm,..,23=11pm)
00FFh Minutes(0 to 59 in steps of 1)2nd 16 bitsSeconds (xx:xx:SS.SSS)
FFFFh
(0 =00.000 s, 1=00.001 s,59999=59.999 s)
NOTE: If the time has never
been set then all 32 bits will
be 1.
2807 DLOG_SS_00 Channel 1 3 KW Demand
2809 DLOG_SS_01 Channel 2 3 KVAR Demand
280B DLOG_SS_02 Channel 3 3 KVA Demand
280D DLOG_SS_03 Channel 4 3 PF @ last demand
280F DLOG_SS_04 Channel 5 3 KWH Import (Delivered)
2811 DLOG_SS_05 Channel 6 3 KWH Export (received)
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Dynamic Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units
2813 DLOG_SS_06 Channel 7 3 KVARH lag
2815 DLOG_SS_07 Channel 8 3 KVARH lead
A value of 0 indicates that no valid interval data is present in the MODBUS board. A value of 0 indicates that the meter has not yet recorded any interval data.
Fixed Value Registers (R4 TYPE)
Fixed Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units/Value/Range
3000 MODBUS_ADDR Modbus Address Dimensionless
3001 COMM_BOARD_PASSWORD Must match the meters master
password; default is MASTER_012(hexadecimal 4D 41 53 54 45 52 5F
30 31 32)
10 alphanumeric
3006 58 REGISTERS RESERVED FOR EEPROM DATA
3040 PRODUCT_ID Product Id 1
3041 MODBUS_REV Modbus S/W Revision 4 character string with 2 place
decimal
3043 MANUFACTURER Name of manufacturer "GE "
3045 ED_MODEL Meter Model "kV2 "
3049 METER_HW_REV Meter H/W Revision and Version
number
MSB implies functional differences;
LSB implies product corrections or
improvements
304A METER_SW_REV Meter Firmware Revision number MSB implies functional differences;LSB implies product corrections or
improvements
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Fixed Value Registers
Register
Address
DDE Item Name (Mnemonic) Contents Units/Value/Range
304B SERIAL_NUM Serial Number alphanumeric (8 Registers)
3053 IDENTIFICATION ID of the kV2 meter 20 ASCII characters
305D MASTER PASSWORD High order 10 ASCII characters = 5
REGISTERS
3062 READER PASSWORD Medium order 10 ASCII characters
3067 CUSTOMER PASSWORD Low order 10 ASCII characters
306C SECURITY FLAGS Prevent MeterMate from writing
into Canadian meter in the field
b0: Meter Sealed if set
b1: If set, demand resets areprevented
b2: If set, allows access with any(reader) password restricted to
modifying thecustomer/reader
password(s) in this table only.
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Fixed Setpoint Registers (GENERAL)
Register
Address
DDE Item Name (Mnemonic) Contents Units/Value/Range
3100 LENGTH OF DEMAND INTERVAL Demand Interval length Minutes1, 2, 3, 4, 5, 6, 10, 15, 20, 30
or 60
3101 NO OFSUB_INTERVAL
Number of sub-intervals Number of subs1 to 15, valid combinations of
demand interval length and
number of subintervals listed
below:Sub length No. of
subs
1 1, 2, 3, 4, 5, 6,
10, 12, 152 1, 2, 3, 6, 10,
15
3 1, 2, 4, 5, 104 1, 3, 5, 15
5 1, 3, 4, 6,12
6 1, 2, 5, 10
10 1, 2, 3, 6
15 1, 2, 320 1, 3
30 1, 2
60 1
DATA LOGGER
3200 DATA_LOG_MEM_ LENGTH Reserved bytes for DataLogger in kV meter
3202 DATA_LOG_FLAGS Reserved
3203 DATA_LOG_FORMAT Reserved
3204 NBR_BLOCKS Number of blocks
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Fixed Setpoint Registers (GENERAL)
Register
Address
DDE Item Name (Mnemonic) Contents Units/Value/Range
3205 NBR_INTS_PER_BLOCK Number of Intervals per block
3206 NBR_CHANNELS Number of channels 3207 LOG_INTERVAL Log Interval length
MSB has to be masked
Minutes
1,2,3,4,5,6,10,12,15,20,30, or
60
Commands or Procedures
Command
Register
Address
DDE Item Name
(Mnemonic)
Contents Units/Value R/W Data
Type
4000 CLEAR_DMND Clear Watt Demand 0 WO Discrete
4001 MTR_INITIALIZE Initialize meter 0 WO Discrete
4002 CLEAR_ERROR Clear Meter Errors 0 WO Discrete
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Appendix C - Replacing the Cable Connector
The EIA-485 standard does not specify a standard connector for RS-485 communications. The MODBUS
board will be shipped with a cable terminated with an RJ-11 connector. This connector may be replaced
with a connector appropriate for the destination network by following the diagram below.
BLU
YEL
GRN
RED
BLK
WHT
1
2
3
4
5
6
TX+
TX-
RX+
RX-
COM
DATA B
DATA ACOM
kV/kV2 MODBUS Cable(RJ -11 termination)
MODBUSConnector
MODBUS Cable Connector Wiring
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Appendix D
Network Architecture and Wiring
Modbus Wiring Rules Diagrams
The Modbus network protocol has wiring rules and limits on the number of IEDs that may be attached.This section describes in greater detail the rules you must follow when designing a Modbus network.
NOTE: It is important to take future expandability
into consideration when designing a network
configuration. This is particularly so when thenetwork is near its maximum number of IEDs or
maximum cable length. Adding IEDs to a networkafter it has been installed may require rewiring the
network.
CAUTION: Wire-run distances mentioned in the
configuration rules assume application above grade
or in conduit. For below-grade applications, refer toSection 31, Wiring Requirements.
Regardless of which platform is supporting the RS-485 networks (Ethernet Gateway, RS-485 card, or RS-232/RS-
485 converter), the following rules apply to each individual RS-485 network.
1. Each RS-485 network may support up to 31 Modbus IEDs. Figure 2 illustrates this rule. (See the exception
below Figure 6.)
31 RS-485 IEDs maximum;
PMCS Host PC, Ethernet Gateway or MSP
always located at one end of Modbus network.
Host
Figure 2. Network illustrating Modbus Rules 1 and 2.
Exception to Rule 1: Some types of IEDs must be wired on dedicated private serial network segments, one IED per
serial Modbus line.
2. The host (or Ethernet Gateway) must always be located at one end of any Modbus segment. It may not belocated in the center of a Modbus network. Figure 2 shows the correct placement of the host (PC or Ethernet
Gateway).
3. All Modbus IEDs on a single RS-485 network must communicate at the same baud rate. If IEDs with different
communication speeds are connected to the same RS-485 network, the whole segment will communicate at thespeed of the slowest IED. Figure 3 illustrates this rule. (Communication speeds for supported IEDs are listed in
Table 1.)
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Figure 3. Network illustrating Modbus Rule 3.
4. Each RS-485 network must be properly terminated at both ends of the cable run after the final IED. Figure 4
illustrates this rule.5. Each RS-485 network must have its shield properly grounded. Figure 4 illustrates proper RS-485 wiring and
grounding.
CAUTION: Improper grounding may create aground-loop condition and cause communications
failures. Make sure you follow the wiring diagram
carefully.
To ensure proper grounding, follow this procedure. Begin by grounding the RS-485 cable shield at the host. Follow
the cable to the first IED on the network. Do NOT connect the cable ground to the IED. Pick up the RS-485 output
cable from the IED and attach its ground to the IEDs shield connection or grounding screw. For IEDs with nogrounding connectors, connect to earth ground.
Follow the cable to the next IED, and repeat the above procedure. Do not connect the RS-485 shield from the
previous IED, but DO connect the RS-485 OUT shield on its way to the next IED.
EXCEPTION: The Multilin 565 Feeder
Management Relay does not have isolated
communications ports. Do NOT connect the shield at
this IED. Instead connect the shield of the incomingRS-485 cable to the shield of the outgoing RS-485
cable, skipping the Multilin 565.
Rules of thumb: RS-485 cable ground should always be connected at the previous IED, never upon arrival at an
IED. All RS-485 IEDs must have either two communications cables attached or one communications cable and a
terminating resistor.
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RS-485 Host
(RS-485 card*, RS232/RS-485 converter,
Multiple Serial Port or Ethernet Gateway RS-485 port)
Network Connections: + - Shield
RS-485 IED #1
Shield
+
-
RS-485 IED #2
Shield
+
-
Two wire, twisted,
shielded pair cable
RS-485
RS-485 IED #31
Shield
+
-
120-ohm
terminating resistor
Shield
connected
at host
Shield not
connected
at first IED
RS-485 IN
Shield
connected
at first IED
RS-485 OUT
Shield not
connected
at IED
RS-485 IN
Shield
connected
at IED
RS-485 OUT
Shield not
connected
at IED
RS-485 IN
120-ohm terminating resistor
* Connect Tech RS-485 cards
require a 600-ohm resistor
in place of the 120-ohmterminating resistor.
Figure 4. Network illustrating Modbus Rules 4 and 5.
6. A single RS-485 network may have up to 215 commnet IEDs attached to it via POWER LEADER Modbus
Concentrators. Figure 5 illustrates this rule.
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RS-485 IEDs
(31 Max)
Host
Modbus
Concentrator
MC
Commnet IEDs
(up to 32 per Modbus Concentrator,
215 total per RS-485 network)
Figure 5. Network illustrating Modbus Rule 6.
7. A single RS-485 network may have no more than 4000 feet of cable (total cable length, not distance between
IEDs). Figure 6 illustrates this rule.
RS-485 IEDs
(31 Max)Host
Total Cable Length < 4000 feet
100 ft
300 ft
1500 ft
1500 ft
200 ft 300 ft
Figure 6. Network illustrating Modbus Rule 7.
8. RS-485 repeaters may be used to extend the range beyond 4000 feet. A single RS-485 repeater may be used toprovide a 4000-foot extension, and each additional repeater in a sequence extends the range by another 4000
feet. Figure 7 illustrates this rule.
With 2 Repeaters,
Total Cable Length < 8000 feet
Host100 ft
200 ft 2500 ft
500 ft 700 ft
4000 ft
R
R
RS-485
Repeaters
Figure 7. Network illustrating Modbus Rule 8.
9. There may be no more than two RS-485 repeaters between any two RS-485 IEDs. Figure 8 illustrates this rule.
Correct - Maximum two repeaters between RS-485 IEDs
Incorrect - more than 2 repeaters between RS-485 IEDs
Rptr Rptr Rptr
Rptr Rptr
Figure 8. Network illustrating Modbus Rule 9.
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Network Wiring and Construction
Once the network has been carefully laid out on paper and IED addresses have been planned, you need to check the
following wiring requirements before beginning assembly of the system.
WARNING: Network wiring and grounding rules described herein apply primarily to commeand industrial installations. Substation installations will exist in the presence of dangerously
elevated ground potential relative to points outside of the station grid as well as large
electromagnetic induction fields. Additionally, large ground faults can elevate substation groupotentials. Follow local utility best-practices and safety procedures to prevent risk of shock or
electrocution to personnel and damage to equipment that could result in a loss of protection a
communications.
CAUTION: The recommended installation practice is to implement optical fiber for connecti
between buildings to provide electrical isolation. This eliminates harmful ground loops cause
differences in the ground potential between structures.
CAUTION: Data line surge protection is recommended for network components such as hubscomputers, or modems connected to IEDs with copper wire, especially installations where the
data communication cable is exposed (i.e., not encased in conduit) or runs parallel to power
conductors. IEDs are routinely installed in areas exposed to heavy electromagnetic fields (EM
which can induce damaging surges in data communication lines. Data line surge protection is
required for fiber optic connections.
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Wiring Requirements
Modbus has unique wiring requirements. These rules are summarized following.
WARNING: The National Electrical Code (NEC)
and all applicable local codes must be followedwhen installing wiring.
Type of Wire
Belden 9841 or Alpha 6412 may be used for applications under 300 V that are indoors or outdoors in conduit above
grade. These cables may be also be used for 600 V requirements by applying 600 V tubing to them. Belden 3074F
may be used for applications greater than 300 V which are indoors or outdoors in conduit above grade.
Termination
RS-485 cables must be terminated at each end of the network with a 120-ohm, 1/2-watt, 5% tolerance resistor.
IMPORTANT NOTE FOR CONNECT TECH
CARD USERS: The Connect Tech RS-485 cardrequires a 600-ohm rather than a 120-ohm resistor.
Use the 600-ohm resistor at the Connect Tech card
only. The other end of the Modbus network(s)
should be terminated with the usual 120-ohm
resistor.
See Figure 4 for an example of the cable run terminated at the final IED on the network.
Shield Grounding
The RS-485 cable shield must be grounded at only a single point on each RS-485 wire. Connect the shield to the
ground terminal at the Ethernet Gateway or RS-485 interface card. Connect the cable shield to the shield terminal ateach IED on the RS-485 network except the Multilin 565, which does not have isolated communication ports
(Modbus Rule 5, Section 24).
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Local Configuration of IEDs
You must properly configure each IED connected to the host software. Be sure to set the IED address at the IED and
at the host software, set the communication speed, and configure any necessary settings.
For detailed directions on setting addresses, communication speed, and protection parameters, refer to the user guide
for each IED.
Applying Power to the System
WARNING:
Voltages hazardous to personnel and equipment may be present at the power connections.
Once youve installed the network, you should apply power to the network from the bottom up. Follow thisprocedure when applying power to the system for the first time:
1. Make sure that all communications wiring has been correctly connected to each IED and that the systemmatches the plan exactly, meeting all rules and requirements explained in this manual.
2. Make sure that all wiring for control power to IEDs has been correctly installed and that the correct controlvoltage is present at each IED.
3. If commnet IEDs are installed, apply control power to the IEDs and then to the Modbus Concentrator to which
they are attached.4. Apply control power to any Modbus RTU IEDs.
5. Apply control power to the Ethernet Gateway, if one is being used.
6. Turn the computer on and start the host software according to the instructions in the software manuals.
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Trouble-Shooting Guide
Symptom Possible Cause Corrective Action
1. No communication to one
or more Modbus IEDs;
some IEDs OK.
The IED or a repeater is not
powered.
Check that control power is supplied to all IEDs and
repeaters. If the IED or repeater does not operate when
control power is present, contact the GE Resolution Center
at 1-888-GE-RESOLV.
RS-485 wiring is shorted orimproperly connected.
Locate and remove the short or incorrect connection.
An RS-485 shield has been
grounded incorrectly.
Refer to Section 24, Rule 5 for proper RS-485 grounding
considerations. Recheck the RS-485 network forcompliance. Improper grounding can cause communication
errors.
The network configuration is
incorrect.
Check that the network conforms to rules regarding RS-485
wiring above.The IED is not addressed. Ensure that each IEDs Modbus address corresponds to the
address set at the host software.
Two or more Modbus IEDs
have the same address.
Check IEDs for duplicate address assignments. Change the
address of the affected IED, then attempt to communicate
with the original address to see if another IED has thataddress.
Check any dual-port IEDs to be sure that each RS-485 portis wired to a separate RS-485 network.
2. No communication to anyIEDs on one commnet
segment.
The IEDs or a Repeater on thatsegment is not powered.
Check that control power is supplied to all IEDs. Checkthat two LEDs are lit on each Repeater, indicating that
control power is present. If the IED or Repeater does not
operate when control power is present, contact the GE
Resolution Center at 1-888-GE-RESOLV.Commnet wires are shorted or
improperly connected.
Locate and remove the short or incorrect connection.
The network configuration of
the segment is incorrect.
Check that the segment conforms to Rules 1 through 5 in
Chapter 2 regarding the number of IEDs permitted percommnet segment and wiring requirements and limitations.
3. Intermittent communi-
cation to an IED (Modbus
or commnet).
The network configuration is
incorrect.
Check that the network conforms to the rules in Chapter 2.
The IED or a Repeater is notpowered or has inconsistent
power.
Check the control power supplied to the IED and to anyRepeaters on the network or segment.
Two or more IEDs on thenetwork have the same address.
Check the host for duplicate address assignments. Changethe address of the affected IED, then attempt to
communicate with the original address to see if another
IED has that address.
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Appendix E - Meter Programming Parameters
Required Programming Parameters
Use GEs MeterMate software to program your kV/kV2 meters. Be sure you have the required soft-
switches enabled in the meters. The following items must be programmed exactly as specified in order for
the MODBUS board to function correctly with a kV/kV2 Meter. Quantities to be metered must be assigned
in the specified order. Any programmed parameters not explicitly restricted below may be programmed as
the user requires.
KV Meter
Required Soft-switches
A, K, R, T
Demand Metering
Demand Interval Length 15 Minutes
Demand Interval Type Block
Billing Measures
kWh Total Del Only
kvah Total Lag-Lead
Demand Measures
kW Total Del Onlykva Total Lag-Lead
Recorder Options
Option Board Memory Configuration Both Load Profile & Self ReadLoad Profile Interval Length 15
Load Profile # Channels 2
Channel Configuration
Channel 1 kWh
Channel 1 Scale Factor 1Channel 2 Alternate Measure
Channel 2 Scale Factor 1
Alternate Measure kVAh
KV2 Meter
Required Soft-switches
A, K, Q, T, X
Measurement Profiles (Order is not important)
No of Measurements in Profile 7kWh Total Del Only F+H
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kWh Total Rcvd Only F+H
kWh Total Del+Rcvd F+H
kvarh Total Lag Only F+H IEEE
kvarh Total Lead Only F+H IEEE
kvarh Total Lag+Lead F+H IEEEPhasor kVAh F+H IEEE
Demand Metering
Demand Interval Length 15 Minutes
Demand Interval Type Block
Billing Measures
kWh Total Del Only F+H
kWh Total Rcvd Only F+H
kvarh Total Lag Only F+H IEEEkvarh Total Lead Only F+H IEEE
Phasor kVAh F+H IEEE
Demand Measures
kW Total Del Only F+HkW Total Rcvd Only F+H
kvar Total Lag Only F+H IEEE
kvar Total Lead Only F+H IEEEPhasor kVA F+H IEEE
Coincident Demands
kW Total Del Only F+H Coincident to Phasor kVA F+H IEEE (Demand 5)kW Total Recd Only F+H Coincident to Phasor kVA F+H IEEE (Demand 5)
Average PF - NumeratorkWh Total Del Only F+H
Average PF - Denominator
Phasor kVAh F+H IEEE
Recorder Option
Days of LP Memory 30Load Profile Interval Length 15
Load Profile # Channels 8
Channel Configuration
Channel 1 kWh Total Del+Rcvd F+H
Channel 1 Scale Factor 1
Channel 2 kvarh Total Lag+Lead F+H IEEE
Channel 2 Scale Factor 1Channel 3 Phasor kVAh F+H IEEE
Channel 3 Scale Factor 1
Channel 4 kWh Total Del Only F+H*
Channel 4 Scale Factor 1Channel 5 kWh Total Del Only F+H
Channel 5 Scale Factor 1Channel 6 kWh Total Rcvd Only F+H
Channel 6 Scale Factor 1
Channel 7 kvarh Total Lag Only F+H IEEE
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Channel 7 Scale Factor 1
Channel 8 kvarh Total Lead Only F+H IEEE
Channel 8 Scale Factor 1
* This is place holder only; the MODBUS board will compute the data for this channel.
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