Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 157

• Search from a value in the middle of the cam axis current value per cycle. (Cam data starting point = 0)
Cam axis current value per cycle
Cam axis current feed value
(Current feed value)
New cam reference position
Cam reference position
at starting the restoration
• Search from a value in the middle of the cam axis current value per cycle. (Cam data starting point  0)
Cam axis current value per cycle
Cam axis current feed value
(Current feed value)
New cam reference position
Cam reference position
at starting the restoration
• The first search fails and a search begins for the second time.
Cam axis current value per cycle
Cam axis current feed value
(Current feed value)
New cam reference position
Cam reference position
at starting the restoration
If the first search fails, a second search may not be processed on the next cycle for a cam pattern with a feed
stroke that is smaller than 100% of the stroke as above.
The intended cam axis current value per cycle can be found in the first search, by setting or positioning the
cam reference position in advance.
[Pr.468] Cam axis current value per cycle (Initial setting)
(R: D42752+160n, D42753+160n/Q: D15112+150n, D15113+150n)
Update the cam reference
position in the next cycle
automatically.
[Pr.468] Cam axis current value per cycle (Initial setting)
(R: D42752+160n, D42753+160n/Q: D15112+150n, D15113+150n)
Cam data
Update the cam reference
starting point
position in the next cycle
automatically. (Update the
cam data on 0th point.)
Once the restoration fails in the first search, the new cam reference position
is automatically updated to the one within the feed stroke amount, which is
equal to "Current feed value - New cam reference position", and the search
process starts again.
Restore to the first current
feed value that matches.
Search from the value in the middle.
Restore to the first current
feed value that matches.
Feed stroke
Restore to the first current
feed value that is found in
the second search.
7 SYNCHRONOUS CONTROL INITIAL POSITION
7.3 Cam Axis Position Restoration Method
7
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