Cam Reference Position Restoration - Mitsubishi Electric Q173DSCPU Programming Manual

8 AUXILIARY AND APPLIED FUNCTIONS

8.6.2 Cam reference position restoration

[Pr.464] Setting method of cam axis
current value per cycle
(D15104+150n)
0: Previous value
1: Initial setting value of cam
axis current value per cycle
2: Current value per cycle
after main shaft gear
3: Current value per cycle
after auxiliary shaft gear
Current feed value
(D0+20n, D1+20n)
(At synchronous control start)
If [Pr.462] Cam axis position restoration object (D15102+150n) is set to "1: cam
reference position restoration" when starting synchronous control, the cam reference
position is restored based on the cam axis current value per cycle and the cam axis
current feed value.
Select the method for the cam axis current value per cycle to be restored. The current
feed value when starting synchronous control is used as the cam axis current feed
value.
[Md.407] Cam axis current value
per cycle
(D13612+30n, D13613+30n)
[Md.409] Cam axis current feed
value
(D13616+30n, D13617+30n)
Cam axis current value per cycle
Cam axis current feed value
Cam reference position
Restored by the equation of "Current feed value - Cam axis current value per cycle"
(1) Example
The following shows an example of restoring the cam reference position to start
operation from a point (the current feed value and the cam axis current value per
cycle are 0) in the cam when the cam data starting point is not 0.
Cam axis current value per cycle
Cam axis current feed value
Cam reference position
0
0
8 - 24
The cam reference position is restored
based on the cam axis current value per
cycle and the cam axis current feed value.
[Md.408] Cam reference position
(D13614+30n, D13615+30n)
Cam data
starting point
Cam data