ACS 400 User’s Manual 139
Register Mapping
The drive parameters are mapped to the 4xxxx area so that:
• 40001 – 40099 are reserved for drive control registers
• 40101 – 40199 is reserved for the actual values (parameter group 1)
• 40201 – 40299 is reserved for parameter group 2
• 40301 – 40399 is reserved for fault and alarm information
•… other parameter groups
• 49901 – 49999 is reserved for the start-up data
Register addresses 4GGPP are shown in Table 19. In this table GG is the group number, and PP is
the parameter number within the group.
Table 19 Parameter mapping.
The register addresses between the groups are invalid. No reads or writes are allowed for these
addresses. If there is an attempt to read or write outside the parameter addresses, the Modbus
interface will return an exception code to the controller.
4GGPP GG PP
40001 – 40006 00 Drive control registers 01 Control word
02 Reference 1
03 Reference 2
04 Status word
05 Actual value 1
06 Actual value 2
40102 – 40130 01 OPERATING DATA 02
SPEED
…
30
OLDEST FAULT
41001 – 41003 10 COMMAND INPUTS 01 EXT1 COMMANDS
02 EXT2 COMMANDS
03 DIRECTION
41101 – 41108 11 REFERENCE SELECT 01 KEYPAD REF SEL
…
08
CONST SPEED 7
…… …
49901 – 49908 99 START-UP DATA 02
APPLIC MACRO
…
08
MOTOR NOM SPEED
http://nicontrols.com