Control Techniques UD77 User Manual page 22

The TRIP bit (b4) will cause a "tr52" trip when set to 1, but the trip
cannot be cleared until the TRIP bit (b4) has been reset to 0.
Parameters #18.31 to #18.33 are general user parameters and do not
have mask bits.
Bit Function Description
0 ENABLE Set to 1 to put the Unidrive in READY mode. (The
1 RUN
FWD
2 JOG
3 RUN
REV
4 TRIP
5 #1.45
6 #1.46
7 #18.31
8 #18.32
9 M0
10 M1
11 M2
12 M3
13 #18.33
14 M5
15 M6
Some example control words for Wire-Proof PLC mode are given in the
table below.
b15-b12
0000
0001
0001
0001
0001
22
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
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
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.
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
Set to 1 to trip the Unidrive on "tr52". The TRIP bit
must be reset to 0 before the Unidrive can be reset.
Preset Reference Select. These bits are used to
select the digital speed references used. Refer to the
Unidrive User Guide for more information.
User application bit
User application bit
ENABLE mask bit
RUN FWD mask bit
JOG mask bit
RUN REV mask bit
User application bit
Mask bits for the Preset Reference Select bits
b11-b8 b7-b4 b3-b0
0010 0000 0000
1110 0000 0001
1110 0000 0011
1110 0000 1001
1110 0000 1101
Value Action
0x0200 Drive disable
0x1E01 Enabled + stopped
0x1E03 Enabled + run fwd
0x1E09 Enabled + run rev
0x1E0C Enabled + jog rev
Issue Number: 2