Omron CS1W-MC221 -, Operation Manual

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Servo Lock and Unlock Section 6-14
PLC Interface Area
6-14 Servo Lock and Unlock
Overview Mode: Automatic (servo lock); Automatic or Manual (servo unlock);
Method: Bit designation
This function creates (servo lock) or releases (servo unlock) an MC Unit posi-
tion loop. In addition to the servo lock and unlock operations available for ear-
lier MC Unit models, it is also possible to set general outputs as brake signal
outputs and to turn them ON and OFF in sync with servo lock and unlock. The
ON and OFF times can also be set as required.
Speed reference
accumulated
pulses
Speed reference
Accumulated pulses
N020 execution
1) Accumulated pulses are increased during
N020 execution.
2) After the N020 speed reference output
has been completed, the error counter
reset is turned ON by some condition.
3) After the N020 speed reference out-
put is complete, an error counter reset
check is started. If the error counter re-
set is ON at this time, the error counter
will be reset to 0. After this, program ex-
ecution will be temporarily halted until
the error counter reset is turned OFF. If
the error counter reset is not ON, this
status will be continued until the error
counter enters the in-position range.
Time
N030 execution
4) When the error counter reset
is turned OFF, program execu-
tion is restarted from N030.
Instructions
from CPU
Unit
Status from
MC Unit
Program No.
(n+2)
Program Number Read
(n+3, 07)
Cycle Start
(n+3, 02)
Error Counter Reset
(n+7, 04; n+11, 04)
Program Execution Flag
(n+15, 04; n+23, 04)
Axis Operation Flag
(n+22, 04; n+38, 04)
Busy Flag
(n+22, 01; n+38, 01)
Positioning Completed Flag
(n+22, 05; n+38, 05)
Cycle Start Received Flag
(n+15, 09/n+23, 09)
Name MCU
Model
Word Bit Description
X axis Y axis Z axis U axis
Error Counter Reset MC421
MC221 n+11
n+7 n+13
n+9 n+15
--- n+17
--- 04 0 to 1: Error counter reset
0: Functions can be received.