ABB ACH550-01 User Manual page 158

Fieldbus control interface
The basic control interface between the fieldbus system and the
drive consists of the control word, speed reference, status word
and actual speed or frequency. Depending on the type of the
plug-in fieldbus adapter, additional process data can be defined
by means of the parameters in
or by means of fieldbus-specific parameters accessible via the
network (refer to the fieldbus user's manual). The maximum
amount of process data is limited to 15 words. The actual
amount of process data supported by the plug-in fieldbus
adapter module depends on the fieldbus adapter type.
Process data from fieldbus
controller to drive
Output word
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Note that the word 'output' is used to describe data flow from the
fieldbus controller to the drive and the word 'input' is used to
describe data flow from the drive to the fieldbus controller. In
other words, the direction of flow (input or output) is seen from
the fieldbus controller point of view.
146
Contents
Process data 1
Process data 2
Process data 3
Process data 4
Process data 5
Process data 6
Process data 7
Process data 8
Process data 9
Process data 10 10
Process data 11 11
Process data 12 12
Process data 13 13
Process data 14 14
Process data 15 15
ACH550 User's Manual
Group 51: EXT COMM MODULE
Process data from drive to
fieldbus controller
Input word
1
2
3
4
5
6
7
8
9
Serial communications
Contents
Process data 1
Process data 2
Process data 3
Process data 4
Process data 5
Process data 6
Process data 7
Process data 8
Process data 9
Process data 10
Process data 11
Process data 12
Process data 13
Process data 14
Process data 15