Eaton PM3 Manual

Contents
Description Page
1. Installation and Specifications ..............................................................................................................2
2. Indicators ..............................................................................................................................................9
3. Modbus RTU Communications ......................................................................................................... 10
4. Configuration and Input ...................................................................................................................... 11
5. Modbus Registers .............................................................................................................................. 12
Appendix A ......................................................................................................................................... 17
Effective March 2013
Instruction Leaflet IL012002EN
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors

2
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
1. Installation and Specifications
CAUTION
DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON
EQUIPMENT WHILE IT IS ENERGIZED. DEATH OR SEVERE PERSONAL
INJURY CAN RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT.
ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING.
Figure 1. Attaching the Endcap.
Table 1. End Cap Kits.
Breaker Frame End Cap Kit Cat # End Cap Kit Style #
FD KPEKM1 6606C63G04
FD KPEK1 67B9101G03
JG FJ3RTWK 68C2837G09
JG FJ3RTDK 68C2837G07
KD KPEKM3 5102A14G02
KD KPEK3 5102A14G01
LG L3RTWK 66A4562G05
1. Attach endcap.
Figure 2. Inserting the Unit into the Breaker.
Figure 3. Locking the Unit in Place.
2. Insert unit into breaker.
Breaker must be in OFF or TRIPPED position for assembly.
3. Push down.

3
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 4. Inserting the Screws into the Retainers.
Figure 5. Torquing the Mounting Screws.
4. Insert screws in retainers.
Torque Chart for Connecting PM3 to Breaker
Breaker Frame Head Size Torque
FD Slotted screw 34-38 in-lb
4-4.4 N•m
JG Hex .236" 120-144 in-lb
14-16 N•m
KD Hex .236" 120-144 in-lb
14-16 N•m
LG Hex .315" 275 in-lb
31 N•m
5. Tighten mounting screws to provided torque specifications.

4
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Table 2. FD, JG, KD, LG Terminal Information.
Frame Type Wire Type
Wire Size
Terminal
Materials Catalog Number
Torque
AWG mm2Lb.In. Nm
LG-Frame Cu/Al 500-750(1) 240-380(1) Aluminum TA631L*2 550 62
LG-Frame Cu/Al 2-500(2) 35-240(2) Aluminum TA632L*1*2 375 42
LG-Frame Cu/Al 2-500(1) 35-240(1) Aluminum TA350L 375 42
KD-Frame*3 Cu/Al 2-500(2) 35-240(2) Aluminum TA632L*1*2 375 42
KD-Frame*3 Cu/Al 2-500(1) 35-240(1) Aluminum TA350L 375 42
JG-Frame Cu/Al #4-350(1) 25-185 Aluminum TA250FJ 250 28.2
FD-Frame Cu/Al 4-40 25-95 Aluminum 3TA225FD 120 13.5
*1 Standard collars mounted on line and load end.
*2 Terminal Shield required.
*3 When using PM3 on KD breakers, LG terminals are required on load end of PM3.
CAUTION
TERMINAL SHIELDS MUST BE USED AS PER ORIGINAL CIRCUIT BREAKER
INSTALLATION INSTRUCTIONS.
Figure 6. Layout of LG 3 Pole with PM3.
q
q
12.135
308.23
2.740
69.60
5.480
139.19
8.438
214.33
13.823
351.10
10.125
257.18
5.577
141.66
4.733
120.22
1.719
43.66 .860
21.84
3.984
101.19
4.062
103.17
5.430
137.92
3.984
101.19
4.062
103.17
4.307
109.40
13.823
351.10
5.577
141.66
2.740
69.60
5.480
139.19
8.438
214.33
12.135
308.23
4.733
120.22
1.719
43.66
.860
21.84

5
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 7. Layout of KD 3 Pole with PM3.
Figure 8. Layout of JG with PM3.
4X .125-20 UNC
8.438
214.33
12.137
308.28
10.125
257.18
13.825
351.16
4.922
125.02
.860
21.84
1.719
43.66
5.766
146.46
3.813
96.85
4.062
103.17
4.313
109.55
3.984
101.19
4.89
124.21
5.490
139.45
2.745
69.72 4.062
103.17
2.745
69.72
5.490
139.45
5.766
146.46
13.823
351.10
4.922
125.02
.860
21.84
1.719
43.66
8.438
214.33
12.137
308.28
LOAD END
LINE
END
qHANDLE
LINE END
LOAD END
q
HANDLE
2X M5 x 0.8
C
L
3.952
100.38
11.983
304.37
1.375
34.93
17.48
.688
.781
19.84
3.171
80.54
5.500
139.70
10.500
266.70
2.063
52.40
4.125
104.78
C
LC
L
HANDLE
3.568
90.63
3.438
87.33
3.342
87.17
3.952
100.38
3.344
84.94
3.422
86.92
4.409
111.99
1.375
34.93
17.48
.688
304.80
12.000
10.500
266.70
5.500
139.70 177.8
7.000
100.34
3.952
3.171
80.52

6
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 9. Layout of FD with PM3.
C
LC
LC
L
1.375
34.93
17.45
.687
2.875
73.03
4.500
114.30
9.531
242.09
3.625
92.08
6.000
152.40
11.000
279.40
3.501
88.93
3.385
85.98
3.188
80.98
3.625
92.08
3.625
92.08
11.000
279.40
3.344
84.94
3.422
86.92
3.945
100.20
4.125
104.78
1.375
34.93
.687
17.45
.750
19.05
2.875
73.03
4.500
114.30
9.531
242.09
2.063
52.40

7
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Table 3. PM3 Power Monitoring and Communications Module
Specifications.
Current Input
Pick up current 0.3A rms
Max reported current
FD / JG 250A rms
KD / LD 630A rms
Accuracy 0.5% of reading
Voltage Inputs
Range
Line-to-neutral 30 - 366 Vac
Line-to-line 52 - 635 Vac
Supported Systems 3 element wye, 3 element wye + neutral
2 element delta, 4-wire delta systems
Input Impedance 996 kilo ohm/phase
Burden per phase 0.36 VA/phase max. at 600 V;
0.014 VA at 120 Volts"
Phase Voltage Connections Internal via screw terminal to busbar
Neutral Connection For wye system, a Neutral is required to be connected
to the PM3 on the right Phoenix connector.
If Neutral is not available, the meter will calculate
a virtual Neutral based on the phase to phase RMS
voltage. The system voltage must be balanced for this
to be accurate.
Frequency
Frequency 50 / 60 Hz
Accuracy ± 0.1 Hz
Resolution 0.1 Hz
Power and Energy
Accuracy 1% of reading (ANSI C12.1)
Isolation
All inputs and outputs are galvanically isolated to 2500 volts.
Environmental Ratings
Operating temperature -20º to +50°C (-4 to 122°F)
Storage temperature -20º to +50°C (-4 to 122°F)
Operating humidity To 95% RH non-condensing
Sensing Method
Voltage, current True RMS
Sampling Rate 13.02 K samples per second
Update Rate
Watts, Var and VA 1.03 sec at 60 Hz
All other parameters 1.07 second at 60 Hz
Power Supply
DC voltage 18 – 30 Vdc
Max Current 30.0 mA @ 24 Vdc
Burden 0.72 Watts
Standard Communication Format
Connection type 3 Wire RS-485
(A,B,Common)
Com port baud rate 9600 or 19,200 bauds Default: 19,200
Modbus address range 01 – 247
Data format Selectable (8,N,1 | 8,N,2
| 8,Even,1 | 8,Odd, 1) Default: 8,N,2
Protocols Modbus RTU
Internal Termination Resistor
selectable On or Off Via DIP switch Default: Enabled
Dimensions and Shipping
Weight (lbs) FD 1.26 (0.57 kg)
JG 1.6 (0.73 kg)
KD / LG 2.25 (1.02 kg)
Basic unit (in) FD 4.13 W X 5.00 L X 3.39 H
(104.90 x 127.00 x 86.11 mm)
JG 4.13 W X 5.00 L X 3.39 H
(104.90 x 127.00 x 86.11 mm)
KD / LG 5.48 W X 3.70 L X 4.062 H
(139.19 x 93.98 x 103.17 mm)
Shipping container
dimensions (in) FD/JG 8.0 X 5.13 x 5.5 (203.20 x 130.30 x 139.70 mm)
KD/LG 6.25 X 8.25 X 7.00
(158.75 x 209.55 x 177.80 mm)
Compliance
UL489, Annex J
IEC 61000-4-2 - ESD
IEC 61000-4-4 - EFT
IEC 61000-4-5 - SURGE
IEC 61000-4-6 - EMC
ANSI C12.1 (1% accuracy)
UL®/cUL®/CE

8
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 10. PM3 Breaker Status Wiring Diagram (KD/LG PM3).
Breaker Status:
Breaker status is brought to the unit through a 5-pin Phoenix
RA-series connector, part number 1844249. Figure 10 shows the pin
assignments for this connector.
CAUTION
FOR WYE SYSTEM, A NEUTRAL IS REQUIRED TO BE CONNECTED TO THE
PM3 ON THE RIGHT PHOENIX CONNECTOR. IF NEUTRAL IS NOT AVAIL-
ABLE, THE METER WILL CALCULATE A VIRTUAL NEUTRAL BASED ON THE
PHASE-TO-PHASE RMS VOLTAGE. THE SYSTEM MUST BE BALANCED FOR
THIS TO BE ACCURATE.
Combination
Auxiliary/alarm
Switch Kit
Red
Bell
Alarm
Black
Blue
Aux
Alarm
Black
Red
Bell
Alarm
No Connect
V
Neutral
Earth
Ground
+24
VDC DC Common
Com BA

9
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
2. Indicators
Figure 11. Status Indicators (KD/LG PM3).
2.1. Status Indicator
A single green LED is used to indicate the status of the
Measurement Board. The indicator has three states:
1. OFF
No light emission indicates internal DC power is not available, or the
Measurement Board has malfunctioned.
2. ON
Continuous light emission indicates power is applied, but the
Measurement Board is executing a power-on self test.
3. Slow Flash
Repetitive one second on, one second off indicates the
Measurement Board is operating normally.
Fast Flash
0.5 second on, 0.5 second off indicates one of three failures:
• Unit not calibrated;
• Unit has not been assembled properly; or
• Unit memory has been damaged.
Status
RX Led
TX Led
A
B
Com
DC Common
+24
VDC
Earth
Ground
Settings Network Address
V
Neutral
Red Bell Alarm
Common
Blue Aux Alarm
No Connect
2.2. Modbus Status Indicator
Modbus Rx Indicator
When illuminated, this green LED indicates the Communications
Board is receiving messages on the Modbus network.
ote:N This LED will typically be a solid green. That is, it will not flash as the
transmit LED does.
Modbus Tx Indicator
When illuminated, this green LED indicates the Communications
Board is transmitting a message on the Modbus network.
ote:N This LED typically flashes as the Communications Board transmits
messages over the Modbus network.

10
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
3. Modbus RTU Communications
Modbus is a popular application-layer messaging protocol. The
protocol takes place at the data link layer of the Open Systems
Interconnection (OSI) model. Modbus serial line (Modbus RTU) is a
Master-Slave protocol. A Modbus transaction consists of two mes-
sages: a request from the master, and a reply from the slave.
The Modbus Add-on Module is a Modbus slave. The Modbus physi-
cal layer transmitter and receiver conforms to the RS485 standard.
A Modbus serial line message frame, or Protocol Data Unit, con-
tains:
• An Address Field;
• A Function Code;
• Data; and
• CRC.
Valid addresses are 1 – 247 decimal.
The function code indicates what kind of action to perform.
Examples are:
• 01 – Read Coils;
• 04 – Read Input Registers;
• 06 – Write Single Register;
Messages consist of 11-bit characters. Characters consist of:
• 1 Start Bit;
• 8 Data Bits (least significant bit first);
• 1 Parity Bit (even parity is the default; other modes may be sup-
ported); or
• 1 Stop Bit (2 stop bits if no parity is used).
The least significant bit is transmitted first (see Table 4).
• Modbus Slave, line terminator selectable by dip switch
• Baud rate (9600, 19.2k) selectable by dip switch
• Parity (even, odd, none) selectable by dip switches
3.1. Modbus RS485 Network
The following simplified rules apply to a given system consisting of
a cable link between master and slave devices. For more complex
configurations please refer to standard Modbus RTU wiring specifi-
cation rules for the RS485 network
The recommended Modbus cable has twisted-pair wires (24 AWG
stranded 7x32 conductors with PVC insulation) having an aluminum/
mylar foil shield with drain wire.
• The maximum system capacity is 4,000 feet of communications
cable and 247 devices on the Modbus RTU network.
• Make sure that there is twisted-pair wire that is recommended for
Modbus RTU network use. Use shielded twisted-pair wire to con-
nect each slave to the Modbus RTU network, daisy-chain style.
The polarity of the twisted pair is critically important.
3.2. Modbus Address Switches
Two rotary hexadecimal switches are used to set the Modbus Slave
Address for the unit. Valid addresses are from 0x01 to 0xF7 (1 to
247).
3.3. Exception Codes
Under certain circumstances, the PM3 will return an exception code.
If the function in the query is not supported by the PM3, exception
code 01 is returned in the response.
If the data (object) register is illegal, exception code 02 is returned in
the response.
If the data value in the query is illegal, exception code 03 is returned.
In certain circumstances, an exception code 05 (ACK) is returned.
If the PM3 cannot perform the requested function, exception code
07 (NAK) is returned.
If only a partial register is used in the query, exception code 84 is
returned.

11
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
4. Configuration and Input
4.1. User Options Dip Switch
A six-position Dip Switch is used to set user options for the unit, as
follows:
Figure 12. Six-Position Dip Switch.
Table 4. Modbus, Baud Rate and Parity Settings.
1ON Positive Power & Energy For Backfed Operation
OFF Positive Power & Energy, Normal Operation
2ON ABC (Left to Right Facing Unit)
OFF CBA (Left to Right Facing Unit)
3-4
SW3 ON & SW4 ON No Parity, 2 Stop Bits
SW3 OFF & SW4 ON No Parity, 1 Stop Bit
SW3 ON & SW4 OFF Odd Parity, 1 Stop Bit
SW3 OFF & SW4 OFF Even Parity, 1 Stop Bit
5ON 19.2 K BAUD
OFF 9600 BAUD
6ON 120 Ohm Termination Resistor installed
OFF No termination Resistor
4.2. Breaker Status
The Breaker Status is decoded from two switch inputs, Bell Alarm
NC1and Aux Alarm NC, from the Breaker
Table 5. Bell Alarm and Aux Alarm Positions.
Bell Alarm (Red) Aux Alarm (Blue) Breaker Status
OFF OFF Unknown 
OFF ON Tripped
ON OFF ON
ON OFF OFF
 Breaker not connected or improperly wired.
1 NC= Normally Closed
1 2 4
3 5 6
* ON = Closed
ON *
OFF**
**OFF = Open

12
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
5.Modbus Registers
Slave Actions, Supervisory, and Configuration Commands are
accomplished through Function Code 16, Write Multiple Registers.
The Modbus Add-on Module supports three such commands, as
described in the following sections.
5.1. Add-on Module Status
Status is transmitted in two registers, as shown in Table 6.
Both registers must be accessed in one operation, using Function
Code 04.
Table 6. Status Command Description.
Name Starting Register Number (decimal) Starting Register Address (hex) Number of Registers Format
Status 6145 1800 2 Encoded
Status is encoded as follows:
• Primary Status – High byte of Register Address 0x1800;
• Secondary Status – Low byte of Register Address 0x1800; and
• Cause of Status – Register Address 0x1801.
Status encoding is shown in Tables 7 thru 9.
Table 7. Primary Status Codes Table.
Status Code Short Description
4 ALARM
9 OPERATIONAL
Table 8. Secondary Status Codes Table.
Status Code Short Description
1NOT APPLICABLE
Table 9. Cause of Status Codes Table.
Status Code Short Description
1 Normal
40 DIAGNOSTIC FAILURE #1 (see Note 1 below)
43 DIAGNOSTIC WARNING #2 (see Note 2 below)
44 DIAGNOSTIC WARNING #3 (see Note 3 below)
54 DIAGNOSTIC FAILURE #4 (see Note 4 below)
113 Not Calibrated
Note 1: Measurement Board Communications Failure
Note 2: FRAM Energy Buffer Error
Note 3: FRAM Calibration Constants Error
Note 4: FRAM Communication Error
5.2. Breaker Status
Breaker Status is transmitted in two discrete (bit) inputs, at address-
es 100110 and 100210. Both bits may be read in one operation, or
either bit may be read individually, using Function Code 02. The
Function Code 02 format is shown below for a Slave Address of
0x74.
Table 10. Request From Master.
Field Name
Slave Address 0x74
Function Code 0x02
Starting Address High Byte 0x03
Starting Address Low Byte 0xE8
Number of Inputs High Byte 0x00
Number of Inputs Low Byte 0x02
CRC Low Byte
CRC High Byte
Table 11. Response From Slave.
Field Name
Slave Address 0x74
Function Code 0x02
Byte Count 0x01
Data 0x0y (data is in bits 1..0)
CRC Low Byte
CRC High Byte
The Breaker Status command is summarized in Table 12. Breaker
Status encoding is shown in Table 13
Table 12. Breaker Status Command Description.
Name Starting Register Number (decimal) Starting Register Address (hex) Valid Number of Bits Format
Breaker Status 1001 3E8 1 or 2 Encoded
Breaker Status 1002 3E9 1 Encoded
Table 13. Breaker Status Encoding.
Register Number (decimal) Register Address (hex) Encoding
1001 3E8 0 = Open
1 = Closed
1002 3E9 0 = Not Tripped
1 = Tripped
Table 13a. Combined Breaker Status Encoding
(Registers 1001 and 1002).
Status Code Encoding
00 Open
01 Tripped
10 Closed
11 Unknown *
* Breaker not connected or improperly wired.

13
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
If the Breaker Status cannot be determined (for example, the con-
nector is not connected), an exception (0x82) code of 0x01 is
returned. The response will look like (see Table 14).
Table 14. Breaker Status Unknown.
Response From Slave
Field Name
Slave Address 0x74
Function Code 0x82
Exception Error 0x01
CRC Low Byte 0x81
CRC High Byte 0x60
5.3. Metered Values
The PM3 Modbus Add-on Module communicates metered values
via input registers (Function Code 04). Registers are referenced by
register numbers and register addresses. Register numbers range
from 1 to 65536. Register addresses range from 0 to 65535. Thus,
a data value referenced with number N has an address of (N – 1).
Each register contains two bytes.
The data field in the request from the Modbus Master contains the
starting register address and the number of registers to read. A
typical Request/Response transaction for reading metered values is
shown in Table 15. This example shows a read of register numbers
6147 thru 6152 (IA thru IC) from a slave at address 116.
Table 15. Request From Master.
Field Name
Slave Address 0x74
Function Code 0x04
Starting Address High Byte 0x18
Starting Address Low Byte 0x02
Number of Registers High Byte 0x00
Number of Registers Low Byte 0x06
CRC Low Byte
CRC High Byte
Table 16. Response From Slave.
Field Name
Slave Address 0x74
Function Code 0x04
Byte Count 0x0C
Data From Register 0x1802 High Byte
Data From Register 0x1802 Low Byte
Data From Register 0x1803 High Byte
Data From Register 0x1803 Low Byte
Data From Register 0x1804 High Byte
Data From Register 0x1804 Low Byte
Data From Register 0x1805 High Byte
Data From Register 0x1805 Low Byte
Data From Register 0x1806 High Byte
Data From Register 0x1806 Low Byte
Data From Register 0x1807 High Byte
Data From Register 0x1807 Low Byte
CRC Low Byte
CRC High Byte
5.4. Standard Metered Values
Standard metered values are transmitted as 32-bit numbers.
Metered values are read-only and are transmitted in two registers.
Both registers must be accessed in one operation, using Function
Code 04.
ote:N The arrangement of the bytes in the 4-byte standard meter register
values may be configured by writing to configuration register number 2003
(register address 0x07D2).
Table 17 summarizes the Modbus commands for the standard
metered values.
Table 17. Standard Metered Values Command Descriptions.
Name Units
Register
Number
(decimal)
Register
Address
(hex) Scale factor Format
IAA 6147 1802 10 Uint32
IBA 6149 1804 10 Uint32
ICA 6151 1806 10 Uint32
VAB V 6159 180E 10 Uint32
VBC V 6161 1810 10 Uint32
VCA V 6163 1812 10 Uint32
VAN V 6167 1816 10 Uint32
VBN V 6169 1818 10 Uint32
VCN V 6171 181A 10 Uint32
Real Power – 3 Phase W 6187 182A 1 Int32
Reactive Power – 3
phase VAR 6189 182C 1 Uint32
Apparent Power – 3
phase VA 6191 182E 1 Uint32
Apparent Power Factor % 6195 1832 100 Int32
Frequency Hz 6197 1834 10 Uint32
Phase A Real Power W 6203 183A 1 Int32
Phase B Real Power W 6205 183C 1 Int32
Phase C Real Power W 6207 183E 1 Int32
Phase A Reactive Power VAR 6209 1840 1 Int32
Phase B Reactive Power VAR 6211 1842 1 Int32
Phase C Reactive Power VAR 6213 1844 1 Int32
Phase A Apparent
Power VA 6215 1846 1 Int32
Phase B Apparent
Power VA 6217 1848 1 Uint32
Phase C Apparent
Power VA 6219 184A 1 Uint32
Phase A Apparent
Power Factor % 6227 1852 100 Uint32
Phase B Apparent
Power Factor % 6229 1854 100 Uint32
Phase C Apparent
Power Factor % 6231 1856 100 Uint32
5.5. Energy Values
Energy values are 32-bit numbers. Each energy value requires four
Modbus registers. When reading an energy value, all four registers
must be read in one operation.
ote:N The arrangement of the bytes in the 4-byte energy register values
may be configured by writing to configuration register number 2003 (register
address 0x07D2).
Table 18 summarizes the Modbus commands for the energy values.

14
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Table 18. Energy Values Command Descriptions.
Name Units
Register
Number
(decimal)
Register
Address
(hex) Format
Forward Energy kWh 6259 1872 Uint32
Reverse Energy kWh 6261 1874 Uint32
Total Energy kWh 6263 1876 Int32
Leading Reactive Energy kVARh 6265 1878 Uint32
Lagging Reactive Energy kVARh 6267 188A Uint32
Net Reactive Energy kVARh 6269 187C Int32
Apparent Energy kVAh 6271 187E Uint32
Saved Forward Energy kWh 6503 1966 Uint32
Saved Reverse Energy kWh 6505 1968 Uint32
Saved Total Energy kWh 6507 196A Int32
Saved Leading Reactive Energy kVARh 6509 196C Uint32
Saved Lagging Reactive Energy kVARh 6511 196E Uint32
Saved Net Reactive Energy kVARh 6513 1970 Int32
Saved Apparent Energy kVAh 6515 1972 Uint32
5.5.1 Product ID and Breaker Product ID
The Product ID and Breaker Product ID are transmitted in two reg-
isters, as shown in Table. Both registers must be accessed in one
operation, using Function Code 04.
Table 19. Product ID Command Descriptions.
Name Register Number (decimal) Register Address (hex) Format
Product ID/Breaker Product ID 6255 186E Encoded
The Product ID is encoded as follows:
• Product ID = 3 – b15 .. b10 of Register Address 0x186F;
• Communication Version = 1 – b9 .. b6 of Register Address
0x186F; and
• Division Code = 35 – b5 b0 of Register Address 0x186F.
The Breaker Product ID is encoded as follows:
• Product ID = 1 – b15 .. b10 of Register Address 0x186E;
• Communication Version = 1 – b9 .. b6 of Register Address
0x186E; and
• Division Code = 32 – b5 b0 of Register Address 0x186E.
5.6. Snapshot Energy
The PM3 Modbus Module supports a control command to cap-
ture energy. A write to Register Numbers 2911 (Address 0x0B5E)
and 2912 (Address 0x0B5F) using Function Code 16 (0x10), Write
Multiple Registers, is used for this purpose. The Modbus command
registers and assignments are shown in Tables 20 and 21.
ote:N The effect of this command is the same as the Snapshot Energy com-
mand (see Section 5.7).
Table 20. Request From Master.
Field Name
Slave Address 0x74
Function Code 0x10
Starting Address High Byte 0x0B
Starting Address Low Byte 0x5E
Number of Registers High Byte 0x00
Number of Registers Low Byte 0x02
Byte Count 0x04
Register 0x0B5E Data Value High Byte 0x0D
Register Address 0x0B5E Data Value Low Byte 0x00
Register Address 0x0B5F Data Value High Byte 0x00
Register Address 0x0B5F Data Value Low Byte 0x00
CRC Low Byte
CRC High Byte
Table 21. Response From Slave.
Field Name
Slave Address 0x74
Function Code 0x10
Starting Address High Byte 0x0B
Starting Address Low Byte 0x5E
Number of Registers High Byte 0x00
Number of Registers Low Byte 0x02
CRC Low Byte
CRC High Byte

15
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
5.7. Snapshot Energy
The PM3 Modbus Module supports a control command to capture
energy. A write to Register Numbers 2901 - 2903 (Address 0x0B54
through 0x0B56) using Function Code 16 (0x10), Write Multiple
Registers, is used for this purpose. This command consists of a
three-byte instruction, followed by the one’s complement of the
instruction (also three bytes). The capture energy instruction is
0x000080. The Modbus command registers and assignments are
shown in Tables 22 and 23.
Table 22. Request From Master.
Field Name
Slave Address 0x74
Function Code 0x10
Starting Address High Byte 0x0B
Starting Address Low Byte 0x54
Number of Registers High Byte 0x00
Number of Registers Low Byte 0x03
Byte Count 0x06
Register Address 0x0B54 Data Value High Byte 0x00
Register Address 0x0B54 Data Value Low Byte 0x80
Register Address 0x0B55 Data Value High Byte 0x7F
Register Address 0x0B55 Data Value Low Byte 0x00
Register Address 0x0B56 Data Value High Byte 0xFF
Register Address 0x0B56 Data Value Low Byte OxFF
CRC Low Byte
CRC High Byte
Table 23. Response From Slave.
Field Name
Slave Address 0x74
Function Code 0x10
Starting Address High Byte 0x0B
Starting Address Low Byte 0x54
Number of Registers High Byte 0x00
Number of Registers Low Byte 0x03
CRC Low Byte
CRC High Byte
5.8. Write Fixed-Point Data Multi-Register Configuration
Each Modbus register is defined in the Modbus protocol as a two-
byte entry. Data fields requiring more than two bytes (such as 32-bit
integers) must occupy consecutive register locations. Modbus pro-
tocol defines register information to be transmitted with the most-
significant byte first, followed by the least-significant byte. However,
the protocol does not specify the order of multi-register information.
The default adopted by most of the industry places the least-signifi-
cant word in the first Modbus register (x) followed by the next higher
order 16-bit word in the next Modbus register (x+1), and so forth.
For example, a 32-bit data value 0x98765432 would be transmitted
as shown in Table 24 (left to right).
Table 24. Default Multi-Register Fixed-Point Data Transmission
Order.
Bits
15...8 Bits 7...0 Bits 31...24 Bits 23...16
Byte 1 Byte 0 (LS Byte) Byte 3 (MS Byte) Byte 2
0x54 0x32 0x98 0x76
Register x Register x + 1
To accommodate systems not incorporating this defacto standard,
the Module may be configured to reverse this multi-register order
for registers. This is accomplished by setting Register Number 2003
(Address 0x07D2) to a non-zero number. This places the most-
significant word in the First Modbus register (x) followed by the next
lower order 16-bit word in the next Modbus register (x+1), and so
forth. For example, a 32-bit data value 0x98765432 would be trans-
mitted as shown in Table 25 (left to right).
Table 25. Non-Default Multi-Register Fixed-Point Data
Transmission Order.
Bits
31...24 Bits 23...16 Bits 15...8 Bits 7...0
Byte 3 (MS Byte) Byte 2 Byte 1 Byte 0 (LS Byte)
0x98 0x76 0x54 0x32
Register x Register x + 1
5.8.1 Master Configuration Message:
Table 26. Request From Master.
Field Name
Slave Address 0x74
Function Code 0x10
Starting Address High Byte 0x07
Starting Address Low Byte 0xD2
Number of Registers High Byte 0x00
Number of Registers Low Byte 0x01
Byte Count 0x02
Data Value High Byte 0x00 for Default (Table 43)
0xFF for Non-Default (Table 54)
Data Value Low Byte 0x00 for Default (Table 4)
0xFF for Non-Default (Table 5)
CRC Low Byte
CRC High Byte

16
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
5.9. Modbus Diagnostics Registers
Modbus Function Code 08 provides a series of tests for checking the
communications system or for checking various internal error condi-
tions. The function uses a two-byte sub-function field to define the
type of test to be performed. The format is shown in Tables 27
and 28.
Table 27. Request From Master.
Field Name
Slave Address 0x74
Function Code 0x08
Sub-Function Code 0x1C
Data High Byte 0x20
Data Low Byte 0x12
CRC Low Byte
CRC High Byte
Table 28. Request From Slave.
Field Name
Slave Address 0x74
Function Code 0x08
Sub-Function Code 0x1C
Data High Byte 0x20
Data Low Byte 0x12
CRC Low Byte
CRC High Byte
The PM3 Modbus Add-on Module supports the sub-functions listed
in Table 29.
Table 29. Module Supported Sub-functions.
Sub-
function
Code Description
Example
Transmitted
Data Example Received Data
0x0A Clear Diagnostic Counters,
echo data word 0x55AA 0x55AA
0x0B Read Message
Count Diagnostic Counter 0x0000 Message Count
0x0C Read Communications Error
Count Diagnostic Counter 0x0000 Communications Error Count
0x0D Read Exception Error Count
Diagnostic Counter 0x0000 Exception Error Count
0x0E Read Slave Message Count
Diagnostic Counter 0x0000 Slave Message Count
0x0F Read No Response Count
Diagnostic Counter 0x0000 No Response Count
0x10 Read NAK Count Diagnostic
Counter 0x0000 NAK Count
0x11 Read Slave Busy Count
Diagnostic Counter 0x0000 Slave Busy Count
0x12 Read Overrun Count
Diagnostic Counter 0x0000 Overrun Count
0x14 Clear Diagnostic Counters,
echo data word 0x55AA 0x55AA
0x1A Read Firmware version and
revision 0x0000 Data High Byte – Firmware version
Data Low Byte – Firmware
revision
0x1B Read Firmware month and
day 0x0000 Data High Byte – Firmware month
Data Low Byte – Firmware
day
0x1C Read Firmware year 0x0000 Firmware year

17
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Appendix A
Name Numeric Units Register
Number
(decimal)
Register
Address
(decimal)
Register
Address
(hex)
Scale
Factor Format Function Code
Current IAA 6147-6148 6146-6147 x1802-x1803 10 Uint32 4
IBA 6149-6150 6148-6149 x1804-x1805 10 Uint32 4
ICA 6151-6151 6150-6151 x1806-x1807 10 Uint32 4
L-L Voltage VAB V 6159-6160 6158-6159 x180E-x180F 10 Uint32 4
VBC V 6161-6162 6160-6161 x1810-x1811 10 Uint32 4
VCA V 6163-6164 6162-6163 x1812-x1813 10 Uint32 4
L-N Voltage VAN V 6167-6168 6166-6167 x1816-x1817 10 Uint32 4
VBN V 6169-6170 6168-6169 x1818-x1819 10 Uint32 4
VCN V 6171-6172 6170-6171 181A-x1818 10 Uint32 4
Frequency Freq HZ 6197-6198 6169-6197 x1834-x1835 10 Uint32 4
Real Power 3 Phase W 6187-6188 6186-6187 x182A-x182B 1 Int32 4
Phase A W 6203-6204 6202-6203 x183A-x183B 1 Int32 4
Phase B W 6205-6206 6204-6205 x183C-x183D 1 Int32 4
Phase C W 6207-6208 6206-6207 x183E-x183F 1 Int32 4
Reactive Power 3 Phase VAR 6189-6190 6188-6189 x182C-x182D 1 Int32 4
Phase A VAR 6209-6210 6208-6209 x1840-x1841 1 Int32 4
Phase B VAR 6211-6212 6210-6211 x1842-x1843 1 Int32 4
Phase C VAR 6213-6214 6212-6213 x1844-x1845 1 Int32 4
Apparent Power 3 Phase VA 6191-6192 6190-6191 x182E-x182F 1 Uint32 4
Phase A VA 6215-6216 6214-6215 x1846-x1847 1 Uint32 4
Phase B VA 6217-6218 6216-6217 x1848-x1849 1 Uint32 4
Phase C VA 6219-6220 6218-6219 x184A-x184B 1 Uint32 4
Power Factor % 6195-6196 6194-6195 x1832-x1833 100 Uint32 4
Phase A Power Factor % 6227-6228 6226-6227 x1852-x1853 100 Uint32 4
Phase B Power Factor % 6229-6230 6228-6229 x1854-x1855 100 Uint32 4
Phase C Power Factor % 6231-6232 6230-6231 x1856-x1857 100 Uint32 4
Energy Forward kWh 6259-6260 6258-6259 x1872-x1873 1 Uint32 4
Reverse kWh 6261-6262 6260-6261 x1874-x1875 1 Uint32 4
Total kWh 6263-6264 6262-6263 x1876-x1877 1 Int32 4
Apparent kVAh 6271-6272 6270-6271 x187E-x187F 1 Uint32 4
Saved Forward kWh 6503-6504 6502-6503 x1966-x1967 1 Uint32 4
Saved Reverse Wh 6505-6506 6504-6505 x1968-x1969 1 Uint32 4
Saved Total kWh 6507-6508 6506-6507 x196A-x196B 1 Int32 4
Saved Apparent kVAh 6515-6516 6514-6515 x1972-x1973 1 Uint32 4
Reactive Energy Leading kVARh 6265-6266 6264-6265 x1878-x1879 1 Uint32 4
Lagging kVARh 6267-6268 6266-6267 x187A-x187B 1 Uint32 4
Net kVARh 6269-6270 6268-6269 x187C-x187D 1 Int32 4
Saved Leading kVARh 6509-6510 6508-6509 x196C-x196D 1 Uint32 4
Saved Lagging kVARh 6511-6512 6510-6511 x196E-x196F 1 Uint32 4
Saved Net kVARh 6513-6514 6512-6513 x1970-x1971 1 Int32 4
Status Module N/A 6145-6146 6144-6145 x1800-x1801 N/A Encoded 2
Breaker N/A 1001-1002 1000-1001 x03E8-x03E9 N/A Encoded 4
ID Product/Breaker Product N/A 6255-6256 6254-6255 x186E-x186F N/A Encoded 4

18
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Notes:

19
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Notes:

Eaton Corporation
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© 2013 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. IL012002EN / TBG001071
March 2013
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Corporation.
All other trademarks are property of their
respective owners.
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
The instructions for installation, testing, maintenance, or repair
herein are provided for the use of the product in general commercial
applications and may not be appropriate for use in nuclear applica-
tions. Additional instructions may be available upon specific request
to replace, amend, or supplement these instructions to qualify them
for use with the product in safety-related applications in a nuclear
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The information, recommendations, descriptions, and safety nota-
tions in this document are based on Eaton’s experience and judg-
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The sole source governing the rights and remedies of any purchaser
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