Control Word And Status Word; References; Actual Values - ABB ACQ80-04 Firmware Manual

252 Fieldbus control through a fieldbus adapter


Control word and Status word

The Control word is the principal means for controlling the drive from a fieldbus
system. It is sent by the fieldbus master station to the drive through the adapter
module. The drive switches between its states according to the bit-coded instructions
in the Control word, and returns status information to the master in the Status word.
The contents of the Control word and the Status word are detailed on pages
255 respectively. The drive states are presented in the state diagram (page 256).
Debugging the network words
If parameter 50.12 FBA A debug mode
from the fieldbus is shown by parameter
word transmitted to the fieldbus network by
is very useful to determine if the fieldbus master is transmitting the correct data
before handing control to the fieldbus network.


References

The references are provided by MPPT and does not depend on any user settings. For
more information on MPPT, see chapter


Actual values

Actual values are 16-bit words containing information on the operation of the drive.
The types of the monitored signals are selected by parameters
type and 50.08 FBA A actual 2
Debugging the network words
If parameter 50.12 FBA A debug mode
fieldbus are displayed by
2.
is set to
50.13 FBA A control
50.16 FBA A status
MPPT functionality
type.
is set to
50.17 FBA A actual value 1
Fast [1], the Control word received
word, and the Status
word. This "raw" data
on page 34.
50.07 FBA A actual 1
Fast [1], the actual values sent to the
and 50.18 FBA A actual value
253 and