Mitsubishi Electric MELSEC iQ-R RD78G4 User Manual page 145

Cam axis position at synchronous control start
The cam axis position is composed of the relationship of 3 positions "Cam axis position value per cycle", "Cam reference
position" and "Cam axis command position value". One of positions can be restored by defining 2 positions when starting
synchronous control.
Cam axis position value per cycle
Cam axis command position value
Cam reference position
Select from 3 objects as follows in "[Pr.462] Cam axis position restoration object" which position is to be restored.
(Refer to Page 147 Cam Axis Position Restoration Method for details on the restoration method.)
• Cam axis position value per cycle restoration
• Cam reference position restoration
• Cam axis command position value restoration
Various parameters need to be set for the cam axis position restoration as shown below. (Refer to Page 144
Synchronous Control Initial Position Parameters for the setting details.)
: Required, : Required for initial setting value, : Not required
[Pr.462] [Pr.463]
Cam axis position Setting method of
restoration object cam reference
position
0: Cam axis position value

per cycle restoration
1: Cam reference position

restoration
2: Cam axis command

position value restoration
[Pr.467] [Pr.464]
Cam reference Setting method of
position (Initial cam axis position
setting) value per cycle
 
 
 
5 ADVANCED SYNCHRONOUS CONTROL INITIAL POSITION
[Pr.468] Restoration processing
Cam axis details
position value
per cycle (Initial
setting)
Restore "Cam axis position

(Used as search value per cycle" based on
starting point) "Cam reference position" and
"Cam axis command position
value".
Restore "Cam reference

position" based on "Cam axis
position value per cycle" and
"Cam axis command position
value".
Restore "Cam axis command

position value" based on
"Cam axis position value per
cycle" and "Cam reference
position".
5.1 Synchronous Control Initial Position
5
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