Mitsubishi Electric A173UHCPU Programming Manual page 51

3. POSITIONING SIGNAL
Turn the power supply at the servo side OFF before turning a servomotor by hand.
(9) External STOP input/invalid when starting command (M3209+20n)
This signal is used to make external STOP signal input valid or invalid.
• ON.........External STOP input is set as invalid, and even axes for which STOP
input is currently ON can be started.
• OFF .......External STOP input is set as valid, and axes for which STOP input is
currently ON cannot be started.
POINT
To stop an axis by external STOP input after it has been started with the
M3209+20n command ON, switch the STOP input from OFF to ON
(if STOP input is ON when the axis is started, switch it from ON to OFF to
ON).
(10) Feed current value update request command (M3212+20n)
This signal is used to set whether the feed current value will be cleared or not
when motion is started in speed/position switching control.
• ON........ The feed current value is updated, starting from when motion is
started.
The feed current value is not cleared on starting.
• OFF...... The feed current value is updated, starting from when motion is
started.
The feed current value is cleared on starting.
POINT
When motion is started with M3212+20n, leave M3212+20n ON until
positioning control has been completed.
If M3212+20n is turned OFF part way through, the feed current value may not
be reliable.
(11) Servo OFF command (M3215+20n)
The servo OFF command is used to establish the servo OFF status (free run
status).
• M3215+20n : OFF ..... Servo ON
• M3215+20n : ON ....... Servo OFF (free run status)
This command is not effective during positioning and should therefore be
executed on completion of positioning.
CAUTION
3 − 20