Profidrive Communication Profile - ABB FPBA-01 PROFIBUS DP User Manual

PROFIdrive communication profile

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Control word and Status word
The Control word (PROFIdrive parameter 967) 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 (PROFIdrive
parameter 968).
The contents of the Control word and the Status word are detailed
below. See the drives documentation for information on drive-
specific bits. The drive states for all operating modes are
presented on page 107. The drive states for the positioning mode
are presented on page 108.
Control word contents
The table below shows the contents of the Control word for the
PROFIdrive communication profile (PROFIdrive parameter 967).
The upper case boldface text refers to the states shown in the
state machine on page 107.
Bit Name
0 ON
OFF1
1 OFF2
Value STATE/Description
Speed control
mode
1 Proceed to READY TO OPERATE.
0 Emergency OFF, stop by the selected
deceleration ramp. Proceed to OFF1
ACTIVE; proceed further 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 further
to SWITCH-ON INHIBIT.
Communication profiles 101
Positioning mode