Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 90

Create cam data for two-way cam operation as shown below.
■Stroke ratio data format
Create cam data so that the stroke ratio is 0% at the last point.
■Coordinate data format
Create cam data with the same output value for the point where the input value is 0 and the input value is equal to the cam
axis length per cycle.
Cam axis current
value per cycle
Current feed value
Cam data starting point
This setting is only valid for cam data using the stroke ratio data format.
The cam data point corresponding to "Cam axis current value per cycle = 0" can be set as the cam data starting point.
The default value of the cam data starting point is 0. (The cam axis is controlled with cam data starting from the 0th point
(stroke ratio 0%).)
When a value other than 0 is set for the cam data starting point, cam control is started from the point where the stroke ratio is
not 0%.
The cam data starting point is set for each cam data. The setting range is from 0 to (cam resolution-1).
Cam axis current
value per cycle
Current feed value
Cam reference
position
(At 1st cycle)
Cam data
starting point
At 0th point
Timing of applying cam control data
■Stroke ratio data format
If any one of "[Pr.439] Cam axis length per cycle (R: D42700+160n, D42701+160n/Q: D15060+150n, D15061+150n)",
"[Pr.440] Cam No. (R: D42702+160n/Q: D15062+150n)", or "[Pr.441] Cam stroke amount (R: D42704+160n, D42705+160n/
Q: D15064+150n, D15065+150n)" is changed during synchronous control, the new value is accepted and applied when the
cam axis current value per cycle passes through the 0th point of cam data, or is on the 0th point.
The cam reference position is updated when the cam axis current value per cycle passes through the 0th point of cam data.
■Coordinate data format
If "[Pr.439] Cam axis length per cycle (R: D42700+160n, D42701+160n/Q: D15060+150n, D15061+150n)" or "[Pr.440] Cam
No. (R: D42702+160n/Q: D15062+150n)" is changed during synchronous control, the new value is accepted and applied
when the cam axis current value per cycle passes through 0, or is on 0.
The cam reference position is updated when the cam axis current value per cycle passes through 0.
5 CAM FUNCTION
88
5.1 Control Details for Cam Function
Cam reference Cam reference
position position
(At 2nd cycle) (At 3rd cycle)
At last point
t
t
Cam reference position
(Does not change because of the
stroke ratio 0% and output value = 0.)
t
t