Mitsubishi Electric QD77MS User Manual page 196

For the feed cam, calculates "[Cd.618] Cam position calculation: Cam axis feed current
value" by the stroke difference and searches again from the 0th point to the whole range.
If the corresponding position is not found even though the search process starts again,
the warning "Cam position calculation cam axis 1 cycle current value calculation disable"
(warning code: 834) will occur.
Example) When "[Cd.617] Cam position calculation: Cam axis current value per cycle" is
0
(Cam reference position)
At the 0th point
• Searches until between the 255th point and the 256th point (last point) in order of the
cam data between the 0th point and the 1st point and between the 1st point and the
2nd point.
Example) When "[Cd.617] Cam position calculation: Cam axis current value per cycle" is
0
(Cam reference position)
At the 0th point
• Searches until between the 255th point and the 256th point (last point) in order of the
cam data between the 128th point and the 129th point and between the 130th point
and the 131th point.
corresponding to the 0th point of cam data
[Cd.617] Cam position calculation: Cam axis
current value per cycle
Search starting point
Cam axis length per cycle [Cam axis cycle units]
corresponding to the 128th point of cam data
2
Cam axis length per cycle [Cam axis cycle units]
Chapter 5 Synchronous Control Initial Position
1
[Cd.617] Cam position calculation:
Cam axis current value per
cycle
Search starting point
At the 128th point
5 - 28
Search order
At the 256th point
1
Search order
At the 256th point