Mitsubishi Electric MELSECQ Series User Manual page 184

10 JOG OPERATION
Fig. 10.3 Operation performed when JOG direction flag is changed to reverse run JOG command
10 - 5
Downloaded from ManualsNet.com
(2) When JOG direction flag is changed to reverse run JOG command
during forward run JOG operation
When " JOG. 4 JOG direction flag" is changed to the reverse run JOG command
during forward run JOG operation, forward run JOG operation is continued. In
this case, the reverse run JOG command is made valid when the JOG start
signal turns ON after the BUSY signal of the QD70 turned OFF. However, when
forward run JOG operation is stopped by the axis stop signal or stopped due to
an axis error, reverse run JOG operation is not performed if " JOG. 4 JOG
direction flag" is changed to the reverse run JOG command.
JOG start signal
[Y18 to Y1F]
JOG. 4 JOG direction flag 0 : Forward run JOG
BUSY signal
[X8 to XF]
during forward run JOG operation
REMARK
• When switching between forward run and reverse run, turn the JOG start signal
from OFF to ON when the BUSY signal is OFF.
• When switching between forward run and reverse run, reserve at least 4ms as the
time to turn the JOG start signal from OFF to ON. (Refer to Fig. 10.3.)
search engine
Forward run JOG operation
Reserve
4ms or
more.
ON
OFF
1 : Reverse run JOG
Reverse run
JOG command
is ignored.
ON
OFF
MELSEC-Q
t
Reverse run JOG
operation
10 - 5