ABB ACS355 series, User Manual

Page: 344 / 436

344 Fieldbus control with fieldbus adapter
Fieldbus control interface
The communication between a fieldbus system and the drive consists of 16-bit input
and output data words. The drive supports at the maximum the use of 10 data words
in each direction.
Data transformed from the drive to the fieldbus controller is defined by parameter
group
54 FBA DATA IN and data transformed from the fieldbus controller to the drive
is defined by parameter group 55 FBA DATA OUT .

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
switches between its states according to the bit-coded instructions of the Control
word.
The Status word (SW) is a word containing status information, sent by the drive to the
fieldbus controller.
Start, stop,
dir select
REF1 select
REF2 select
4 = Status word
1)
5 = ACT1
1)
6 = ACT2
1)
Par. 0101 … 9915
1001 / 1002
1103
1106
1 = Control word
1)
2 = REF1
1)
3 = REF2
1)
Par. 0101 … 9915
NOT SEL
…
2)
COMM
Data in
select
5401 /…/ 5410
5501 /…/ 5510
Data out
select
DATA IN
1
…
10
DATA
OUT
1
…
10
Fieldbus-
specific
interface
Fieldbus module
Fieldbus network
1)
Some fieldbus adapters map this data automatically. For
the use of virtual addresses, see the user's manual of
the appropriate fieldbus adapter.
2)
See also other COMM selection parameters.
KEYPAD
…
2)
COMM
KEYPAD
…
2)
COMM