Basics Of The Fieldbus Control Interface; Control Word And Status Word; Actual Values - ABB ACS880 Firmware Manual

Note: If FENA-xx Ethernet adapter is used for Ethernet tool network and Drive
composer PC tool, use the FENA-xx adapter as fieldbus adapter B. Configure the
FENA-xx adapter through parameters
154...156. Normally, use the fieldbus adapter module as fieldbus adapter A. See
Ethernet tool network for ACS880 drives application guide (3AUA0000125635
[English]), and FENA-01/-11 Ethernet adapter module user's manual
(3AUA0000093568 [English]).

Basics of the fieldbus control interface

The cyclic communication between a fieldbus system and the diode supply unit
consists of 16/32-bit input and output data words. The diode supply unit supports
at the maximum the use of 12 data words (16 bits) in each direction.
Data transmitted from the diode supply unit to the fieldbus controller is defined by
parameters 152.01 FBA A data in1
from the fieldbus controller to the diode supply unit is defined by parameters
FBA data out1 ... 153.12 FBA data

Control word and Status word


The Control word is the principal means for controlling the diode supply unit from a
fieldbus system. It is sent by the fieldbus master station to the diode supply unit
through the adapter module. The diode supply unit switches between its states
according to the bit-coded instructions on 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
193 respectively.
If parameter 150.12 FBA A debug mode
the fieldbus is shown by parameter
transmitted to the fieldbus network by

Actual values


Actual values are 16-bit words containing information on the operation of the diode
supply unit.
If parameter 150.12 FBA A debug mode
fieldbus are displayed by
Fieldbus control through a fieldbus adapter 191
150.31...150.51
... 152.12 FBA A data
out12.
is set to Fast, the Control word received from
150.13 FBA A control
150.16 FBA A status
is set to Fast, the actual values sent to the
150.17 FBA A actual value 1
and parameter groups
in12. The data transmitted
word, and the Status word
word.
and 150.18 FBA A actual value
153.01
192 and
2.