Modbus Addresses For Ls 4 Mux Values - Proconx GCP-MG User Manual

established. If this is not the case, a Modbus exception code 0B Gateway target device
failed to respond is returned, indicating the LS 4 unit is not present on the CAN bus.
For the LS 4 MUX data table, the GCP-MG acts as a transparent gateway between the LS
4 unit and the Modbus. Except for the device status register at Modbus address 0001, it
does not perform any modification to the representation of the data values.
The Woodward "LS 4 Circuit Breaker Controls" manual [LS4] is the ultimate reference for
the encoding and representation of the data values. Please refer to the "Transmission
telegram" table in Appendix E "Interface" of this manual for further details.
The following table shows the relationship between Modbus addresses and the so called
MUX identifiers or word numbers.
Block Modbus
address
3 0001
3 0002
3 0003
3 0004
3 0005
3 0006
3 0007
3 0008
3 0009
3 0010
3 0011
3 0012
3 0013
3 0014
3 0015
3 0016
3 0017
3 0018
3 0019
3 0020
3 0021
3 0022
3 0023
3 0024
3 0025
3 0026
3 0027
3 0028
3 0029
40
LS 4 MUX LS 4 word LS 4 manual designator
no.
n/a n/a CAN device status register
Bit 1: 1 = CAN communication between GCP-MG and LS 4 OK
Bit 2-16: reserved for future use
0/1 1 Protocol number 1600
0/2 2 Voltage L12 system A
0/3 3 Voltage L23 system A
1/1 4 Voltage L31 system A
1/2 5 Voltage L1N system A
1/3 6 Voltage L2N system A
2/1 7 Voltage L3N system A
2/2 8 Frequency system A
2/3 9 Current L1 system A
3/1 10 Current L2 system A
3/2 11 Current L3 system A
3/3 12 Power factor
4/1 13 Real power system A
4/2 14 Reactive power system A
4/3 15 Voltage L12 system B
5/1 16 Voltage L23 system B
5/2 17 Voltage L31 system B
5/3 18 Frequency system B
6/1 19 Exponent
6/2 20 Exponent
6/3 21 Internal alarms 1
7/1 22 Internal alarms 2
7/2 23 Internal alarms 3
7/3 24 Internal alarms 4
8/1 25 Internal alarms 5
8/2 26 Internal alarms 6
8/3 27 Internal alarms 7
9/1 28 Internal Diagnosis
UMGCPMG-2201