Issue Number: 3 45
10.3 Fieldbus Control Word
b15 b14 b13 B12 b11 b10 b9 b8
M6 M5 #18.33 M3 M2 M1 M0 #18.32
b7 b6 b5 b4 b3 b2 b1 b0
#18.31 #1.46 #1.45 TRIP RUN
REV
JOG RUN
FWD
ENABLE
Bit Function Description
0 ENABLE Set to 1 to put the Unidrive in READY mode. (The
hardware ENABLE must also be present.) The RUN
FWD, JOG and RUN REV bits will have no effect
unless the ENABLE bit is set to 1. The Unidrive
outputs are disabled immediately when the ENABLE
bit is reset to 0, and the motor will coast to stop
1 RUN
FWD
Set to 1 to run the motor in the forwards direction.
Reset to 0 to decelerate the motor to a controlled
stop before the Unidrive output stage is disabled
2 JOG Set to 1 with RUN FWD or RUN REV bit also set to
jog the motor in the appropriate direction. The
Unidrive will ramp the motor to the normal speed or
stop when the JOG bit is reset to 0, depending on
the status of the RUN FWD and RUN REV bits.
3 RUN
REV
Set to 1 to run the motor in the reverse direction.
When reset to 0, the Unidrive will decelerate the
motor to stop before the outputs are disabled
4 TRIP Set to 1 to trip the Unidrive on “tr52”. The TRIP bit
must be reset to 0 before the Unidrive can be reset.
5 #1.45
6 #1.46
Preset Reference Select. These bits are used to
select the digital speed references used. Refer to
the Unidrive User Guide for more information.
7 #18.31 User application bit
8 #18.32 User application bit
9 M0 ENABLE mask bit
10 M1 RUN FWD mask bit
11 M2 JOG mask bit
12 M3 RUN REV mask bit
13 #18.33 User application bit
14 M5
15 M6
Mask bits for the Preset Reference Select bits
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