ERL 8700/BUS, User Manual, Page: 128 / 166

Appendix E Modbus RTU Communication Protocol
Appendix E-8 B-PRO User Manual 8700 D01908R02.12
Input 3 P 40315 MW 10
Input 3 Q 40316 MVARS 10
Input 4 P 40317 MW 10
Input 4 Q 40318 MVARS 10
Input 5 P 40319 MW 10
Input 5 Q 40320 MVARS 10
Input 6 P 40321 MW 10
Input 6 Q 40322 MVARS 10
Positive Sequence V 40323 kV 10
Frequency 40324 Hz 100
87B-2 IA Operating 40325 A 1
87B-2 IB Operating 40326 A 1
87B-2 IC Operating 40327 A 1
87B-2 IA Restraint 40328 A 1
87B-2 IB Restraint 40329 A 1
87B-2 IC Restraint 40330 A 1
Self Check Fail Parameter 40331 N/A 1
Read Input Register (Function Code 04)
No input registers supported. Response from IED indicates “ILLEGAL FUNCTION.”
Force Single Coil (Function Code 05)
Only the "hold readings" coil can be forced. When active, this coil locks all coil, input and holding register readings simultane-
ously at their present values. When inactive, coil, input and holding register values will read their most recently available
state.
Channel Type Address Value
Hold Readings Read/Write 01 0000: Readings update nor-
mally (inactive)
FF00: Hold readings (active)
Preset Single Register (Function Code 06)
Channel Address Value Scaled Up By
Event Message Control (See below for details of use)
Refresh event list 40513 No data required N/A
Acknowledge the current event and get
the next event 40514 No data required N/A
Read Holding Registers (Function Code 03
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