Register Number Description00001-00006 Reserved00007 Last error code from an FC data object interface00008 Reserved00009 Parameter index*00010-00990 000 parameter group (parameters 001 through 099)01000-01990 100 parameter group (parameters 100 through 199)02000-02990 200 parameter group (parameters 200 through 299)03000-03990 300 parameter group (parameters 300 through 399)04000-04990 400 parameter group (parameters 400 through 499)... ...49000-49990 4900 parameter group (parameters 4900 through 4999)50000 Input data: frequency converter control word register (CTW).50010 Input data: Bus reference register (REF).... ...50200 Output data: frequency converter status word register (STW).50210 Output data: frequency converter main actual value register (MAV).Table 7.15 Holding Registers* Used to specify the index number used when accessing an indexed parameter.7.8.9 Function Codes Supported byModbus RTUModbus RTU supports use of the function codes inTable 7.17 in the function field of a message.Function Function codeRead coils 1 hexRead holding registers 3 hexWrite single coil 5 hexWrite single register 6 hexWrite multiple coils F hexWrite multiple registers 10 hexGet comm. event counter B hexReport slave ID 11 hexTable 7.16 Function CodesFunction FunctioncodeSub-functioncodeSub-functionDiagnostics 8 1 Restart communication2 Return diagnostic register10 Clear counters anddiagnostic register11 Return bus message count12 Return bus communicationerror count13 Return bus exception errorcount14 Return slave messagecountTable 7.17 Function CodesRS-485 Installation and Set... VLT® AQUA Drive FC 202 Design GuideMG20Z102 - VLT® is a registered Danfoss trademark 1757 7
