Mitsubishi Electric Melsec FX Series Beginners Manual page 60

Learning to Use the FX Family for Positioning Control
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Tab. 4-13: Description of the program example in fig. 4-14
The forward and reverse rotation limit switches must be wired so that they are turned ON by default (Nor-
mally closed contacts).
When these limit switches turn OFF (due to the workpiece going out-of-bounds), M8343 or M8344 will turn
ON and cause the pulse operation to stop.
4 - 18
Description
Stops outputting Y000 pulses. (Immediate stop)
Resets "zero return completion" flag.
Resets "forward rotation positioning completion" flag.
Resets "reverse rotation positioning completion" flag.
Normal rotation limit (Y000)
Reverse rotation limit (Y000)
Enables the zero return operation with CLEAR signal outputting function. (CLEAR signal: Y020)
Performs zero return in the forward rotation direction.
Zero return is being performed.
Zero return instruction with DOG search function (CLEAR signal: Y020)
"Zero return completion" flag
Normal end of zero return
Abnormal end of zero return
JOG(+) operation is being performed.
Executes the row No. 1 of the positioning table of Y000 (pulse output destination).
Completes the JOG(+) operation.
MELSEC FX PLC positioning
MITSUBISHI ELECTRIC