Mitsubishi Electric MELSEC Q Series Programming Manual page 289

6 POSITIONING CONTROL
(3) Feed current value processing
The feed current value is as follows by turning feed current value update
command (M3212+20n) on/off at the speed-position switching control start.
(a) M3212+20n OFF...... • The feed current value is cleared to "0" at the start.
Feed current
=
value after stop
(b) M3212+20n ON....... • The feed current value is not cleared at the start.
Feed current
=
value after stop
[M3212+20n OFF]
CHANGE input
Speed
controlling
Feed
0
current
* *
value
Update feed current value
Clear feed current value
M3212
OFF
+20n
POINT
If it is started with M3212+20n on, leave M3212+20n on until positioning control is
completed. If it is turns off during control, the feed current value cannot be
guaranteed.
• The feed current value is updated from the start
(speed control).
• The feed current value after stop is as follows:
Travel value
+
during speed
control
• The feed current value is updated from the start
(speed control).
• The feed current value after stop is as follows:
Address
before speed
+
control start
Position
controlling
Feed
current
value
M3212
+20n
6 - 102
Travel value
for position
control
Travel value
during speed +
control
[M3212+20n ON]
CHANGE input
Position
Speed
controlling
controlling
* * * *
Update feed current value
ON
OFF
Travel value
for position
control