6
vacon • 32 Communications
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
6.3.4 Holding registers and input registers
An "input register" in Modbus is a 16-bit value which is read-only. A "holding register" in Modbus is
a 16-bit value which can be both read and written. Holding and input registers are accessed using
different function codes, and the address ranges are different. In VACON
®
100 family AC drives, the
same information can be accessed as input registers and holding registers, i.e. input register X
refers to the same 16-bit value as the holding register X.
The Modbus registers are mapped to the VACON
®
100 family AC drive as follows:
Accessing unsupported values returns the error code "Illegal Data Address".
Table 19. Defined holding registers
Address range Purpose
Access
type
See R/W
Max R/W
size
0001 - 2000 Vacon Application IDs 16bit Table 20 RW 30/30
2001 - 2019 FBProcessDataIN 16bit Table 21 RW 19/19
2051 - 2086 FBProcessDataIN 32bit Table 21 RW 36/36
2101 - 2119 FBProcessDataOUT 16bit Table 22 RO 19/0
2151 - 2186 FBProcessDataOUT 32bit Table 22 RO 36/0
2200 - 10000 Vacon Application IDs 16bit Table 20 RW 30/30
10501 - 10530 IDMap 16bit Figure 7. RW 30/30
10601 - 10630 IDMap Read/Write 16bit Table 23 RW 30/30
10701 - 10760 IDMap Read/Write 32bit Table 24 RW 30/30
20001 - 40000 Vacon Application IDs 32bit Table 20 RW 30/30
40001 - 40005 Operation day counter 16bit Table 26 RO 5/0
40011 - 40012 Operation day counter 32bit Table 25 RO 2/0
40101 - 40105
Resettable operation
day counter
16bit Table 28
R, Write 1 to
first index
to reset
5/0
40111 - 40112
Resettable operation
day counter
32bit Table 27 RO 2/0
40201 - 40203 Energy counter 16bit Table 30 RO 3/0
40211 - 40212 Energy counter 32bit Table 29 RO 2/0
40301 - 40303
Resettable energy coun-
ter
16bit Table 32
R, Write 1 to
first index
to reset
3/0
40311 - 40312
Resettable energy coun-
ter
32bit Table 31 RO 2/0
40401 - 40430 Fault history 16bit Table 33 RO 30/0
40501
Communication time
out
16bit Table 35 RW 1/1
40511-40568
Fault history with 16 bit
fault codes
16bit Table 34 RO 30/0