Mitsubishi Electric SV13/22 Programming Manual page 279

7. POSITIONING CONTROL
[Cautions]
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(1) Forward JOG operation occurs if the forward JOG signal (M1802+20n) and re-
verse JOG signal (M1803+20n) turn ON simultaneously for a single axis.
When the axis decelerated to a stop after the forward JOG signal had turned
OFF, reverse JOG operation is not performed if the reverse JOG signal is ON.
Reverse JOG operation is started when the reverse JOG signal is turned from
OFF to ON after that.
Forward
OFF
JOG signal
OFF
Reverse JOG
operation
(2) If the JOG operation signal turns ON during deceleration which was started
when the JOG operation signal turned OFF, JOG operation is not performed
after the axis has decelerated to a stop. JOG operation is started when the
JOG operation signal is turned from OFF to ON after that.
JOG operation
signal
(3) JOG operation cannot be started by the JOG operation signals
(M1802+20n/M1803+20n) in a peripheral device test mode.
JOG operation starts on the leading edge (OFF → ON) of the JOG operation
signal after the test mode is reset.
Test Mode
(M9075)
JOG operation
signal
search engine
V
Forward JOG operation
ON
ON
Reverse JOG
signal ignored
V
ON
OFF
JOG operation not possible
without JOG operation
V
signal leading edge
JOG operation not
possible during test
mode (start error)
ON
ON
OFF
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Reverse JOG
signal
JOG operation
JOG operation
OFF
t
t
t