Fieldbus control with embedded fieldbus 333
DCU communication profile
Because the DCU profile extends the control and status interface to 32 bits, two
different signals are needed for both the Control words (
) and Status
words (
).
Control words
The following tables describe the Control word content for the DCU profile.
DCU profile Control word, parameter
Bit
Name
Value
Information
0
STOP
1
Stop according to either the stop mode parameter (
) or
the stop mode requests (bits 7, 8 and 9).
Note:
Simultaneous STOP and START commands result in
a stop command.
0
No operation
1
START
1
Start
Note:
Simultaneous STOP and START commands result in
a stop command.
0
No operation
2
REVERSE
1
Reverse direction. The direction is defined by using the
XOR operation on bit 2 and 31 (= sign of the reference)
values.
0
Forward direction
3
LOCAL
1
Enter local control mode.
0
Enter external control mode.
4
RESET
-> 1
Reset.
other
No operation
5
EXT2
1
Switch to external control EXT2.
0
Switch to external control EXT1.
6
RUN_DISABLE
1
Activate Run disable.
0
Activate Run enable.
7
STPMODE_R
1
Stop along currently active deceleration ramp (bit 10). Bit 0
value must be 1 (
0
No operation
8
STPMODE_EM
1
Emergency stop. Bit 0 value must be 1 (
).
0
No operation
9
STPMODE_C
1
Coast to stop. Bit 0 value must be 1 (
0
No operation
10
RAMP_2
1
Use acceleration/deceleration ramp pair 2 (defined by
parameters
).
0
Use acceleration/deceleration ramp pair 1 (defined by
parameters
).
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...