GE Industrial Solutions AF-600 FP OPCMBTCP Modbus TCP Option - Manual (Page 25)

5.2.4 Holding Register Addressing
Holding registers
Register Number Description
00001-00006 Reserved
00007 Last error code from an Drive data object interface
00008 Reserved
00009 Parameter index*
00100-00999 000 parameter group (parameters 001 through 099)
01000-01999 100 parameter group (parameters 100 through 199)
02000-02999 200 parameter group (parameters 200 through 299)
03000-03999 300 parameter group (parameters 300 through 399)
04000-04999 400 parameter group (parameters 400 through 499)
... ...
49000-49999 4900 parameter group (parameters 4900 through 4999)
2810 Input data: Frequency converter control word register (CTW).
2811 Input data: Bus reference register (REF).
... ...
2910 Output data: Frequency converter status word register (STW).
2911 Output data: Frequency converter main actual value register (MAV).
* Used to specify the index number to be used when accessing an indexed parameter.
Modbus TCP
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