Abb Drives Communication Profile; Control Word And Status Word; Control Word Contents - ABB FCAN-01 User Manual

100 Communication profiles

ABB Drives communication profile

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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
below. The drive states are presented in the ABB Drives profile
state transition diagram on page 105.

Control word contents

The following table presents the Control word of the ABB Drives
communication profile. The upper case boldface text refers to the
states shown in the ABB Drives profile state machine figure on
page 105.
Control word of ABB Drives profile
Bit Name
0 OFF1_
CONTROL
1 OFF2_
CONTROL
Value STATE/Description
1 Proceed to READY TO OPERATE.
0 Stop along currently active deceleration
ramp. Proceed to OFF1 ACTIVE;
proceed to READY TO SWITCH ON
unless other interlocks (OFF2, OFF3)
are active.
1 Continue operation (OFF2 inactive).
0 Emergency OFF; coast to stop.
Proceed to OFF2 ACTIVE, proceed to
SWITCH-ON INHIBITED.