Mitsubishi Electric A173UHCPU Programming Manual page 49

3. POSITIONING SIGNAL
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(3) Forward JOG start command (M3202+20n)/Reverse JOG start command
(M3203+20n)
(a) While the sequence program keeps M3202+20n ON, JOG operation is
executed in the direction in which address numbers increase. When
M3202+20n is turned OFF, a deceleration stop is executed in the
deceleration time set in the parameter block.
(b) While the sequence program keeps M3203+20n ON, JOG operation is
executed in the direction in which address numbers decrease.
When M3203+20n is turned OFF, a deceleration stop is executed in the
deceleration time set in the parameter block.
POINT
Establish an interlock in the sequence program to make it impossible for the
forward JOG start command (M3202+20n) and the reverse JOG start
command (M3203+20n) to be ON at the same time.
(4) End signal OFF command (M3204+20n)
(a) The end signal OFF command is used to turn off the positioning start
completed signal (M2400+20n) and the positioning completed signal
(M2401+20n) by using the sequence program.
Positioning start
completed signal
(M2400+20n)
Positioning completed signal
(M2401+20n)
End signal OFF command
(M3204+20n)
POINT
Do not turn the end signal OFF command ON with a PLS command.
If it is turned ON with a PLS command, it will not be possible to turn OFF the
positioning start completed signal (M2400+20n) or the positioning completed
signal (M2401+20n).
(5) Speed/position switching enable command (M3205+20n)
(a) The speed/position switching enable command is used to make the
CHANGE signal (signal for switching from speed to position control)
effective from an external source.
• ON ........ Control switches from speed control to position control when the
CHANGE signal comes ON.
• OFF ...... Control does not switch from speed to position control even if the
CHANGE signal comes ON.
Control does not switch from
speed control to position control
because M3205+20n is OFF
Speed/position switching
enable command
(M3205+20n)
CHANGE signal from
external source
Dwell
time
ON
OFF
ON
OFF
ON
OFF
CHANGE CHANGE
ON
OFF
OFF
3 − 18
Dwell
time
Control switches from
speed control to position
control because
M3205+20n is ON
t
t