ABB ACSM1 - Basics of the Fieldbus Adapter Interface; Control Word and Status Word

Appendix A – Fieldbus control
427
Basics of the fieldbus adapter interface
The cyclic communication between a fieldbus system and the drive consists of 16/
32-bit input and output data words. The drive supports at the maximum the use of 12
data words (16 bits) in each direction.
Data transmitted from the drive to the fieldbus controller is defined by parameters
52.01 FBA DATA IN1…52.12 FBA DATA IN12 and data transmitted from the fieldbus
controller to the drive is defined by parameters 53.01 FBA DATA OUT1…53.12 FBA
DATA OUT12.
Control Word and Status Word
The Control Word (CW) is the principal means of controlling the drive from a fieldbus
system. The Control Word is sent by the fieldbus controller to the drive. The drive
Fieldbus adapter module
Fieldbus-
Fieldbus network
specific
interface
DATA
OUT
2)
4)
1
2
3
…
12
DATA
IN
2)
5)
1
2
3
…
12
2.13 FBA MAIN SW
FBA ACT1
FBA ACT2
Par. 01.01…99.13
2.12 FBA MAIN CW
2.14 FBA MAIN REF1
2.15 FBA MAIN REF2
Par. 10.01…99.13
FBA profile
1) See also other parameters which can be controlled by the fieldbus.
2) The maximum number of used data words is protocol-dependent.
3) Profile/instance selection parameters. Fieldbus module specific parameters. For more information, see the
User’s Manual of the appropriate fieldbus adapter module.
4) With DeviceNet, the control part is transmitted directly.
5) With DeviceNet, the actual value part is transmitted directly.
Profile
select
ion
3)
Profile
selection
3)
Parameter
table
EXT1/2
Start func
REF1 Sel
Group 53
DATA OUT
selection
Group 52
DATA IN
selection
4)
5)
1)
Cyclic communication
Acyclic communication
See the manual of the fieldbus
adapter module.
24.01/32.01/
32.02/65.01/
65.04
REF2 Sel
24.02/32.01/
32.02/65.01/
65.22
10.01/10.04