Parker AC30 Série Mode D'emploi page 207

A-5
Fieldbuses
USER-DEFINED PARAMETER MAPPING
The inverter parameters may be mapped to the user-defined register area (00001 – 00256). This allows parameters to be grouped together so
that they may be accessed through a single Modbus request.
To map parameters add the required parameter numbers to the user mapping table using parameter 1567 Modbus Mapping. The following
applies:
•
The mapping starts at register 00001.
•
Any valid fixed or application parameter may be added excluding password parameters and parameter arrays - individual elements of the
array may be added however.
•
Parameter strings may be added.
•
The mapping ends on the first mapping entry of zero or when the mapping table is full.
Note: The mapping may be modified at any time. However no Modbus requests should be made when the mapping is being modified to avoid
indeterminate response data.
Unlike the fixed mapping, the user-defined parameter mapping will only use as many registers as necessary to accommodate the parameter. An
example is given below:
Mapping Table
0
1
2
3
4
5
6
The mapping table is continually checked for valid entries. The diagnostic parameter 1632 Mapping Valid will be TRUE if all entries in the table
are valid parameters. If the diagnostic parameter is FALSE, meaning there are invalid entries, then Modbus requests are still accepted but the
invalid entries will be skipped over and will occupy no registers in the mapping.
Parameter Name
0627 Comms Control Word
0681 Comms Reference
0696 First Trip
0661 Status Word
0395 Actual Speed Percent
0961 Drive Name
0000
Data Type No. of Registers
WORD
REAL
USINT
WORD
REAL
23-character STRING 12
Start Register
1 00001
2 00002
1 00004
1 00005
2 00006
00008
AC30 series Variable Speed Inverter
End Register
00001
00003
00004
00005
00007
00019