Mitsubishi Electric RD77MS2 - Page 339

9 COMMON FUNCTIONS
9.9 Mark Detection Function
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[Pr.803] Mark detection data axis No.
Set the axis No. of data that latched at mark detection.
*1 Cam axis current value per cycle that considered delay of the servo system.
If a value other than the above is set, the warning "Outside mark detection data axis No. setting range" (warning code: 0938H)
occurs and the target mark detection is not available.
[Pr.804] Mark detection data buffer memory No.
Set the No. of optional 2 words buffer memory that latched at mark detection.
Set this No. as an even No.
If a value other than the above is set, the warning "Outside mark detection data buffer memory No. setting range" (warning
code: 0939H) occurs and the target mark detection is not available.
[Pr.805] Latch data range upper limit value, [Pr.806] Latch data range lower limit value
Set the upper limit value and lower limit value of the latch data at mark detection.
When the data at mark detection is within the range, they are stored in "[Md.801] Mark detection data storage area (1 to 32)"
and the "[Md.800] Number of mark detection" is incremented by 1. The mark detection processing is not executed.
• Upper limit value > Lower limit value
The mark detection is executed when the mark detection data is "greater or equal to the lower limit value and less than the
upper limit value".
• Upper limit value < Lower limit value
The mark detection is executed when the mark detection data is "greater or equal to the lower limit value or less than the
upper limit value".
• Upper limit value = Lower limit value
The mark detection range is not checked. The mark detection is executed for all range.
[Pr.802] Mark detection data type [Pr.803] Mark detection data axis No.
Setting
value
Data name Unit RD77MS2 RD77MS4 RD77MS8 RD77MS16
0 Current feed value 10
-1
[m], 10
-5
[inch], 10
-5
[degree], [pulse]
1 to 2 1 to 4 1 to 8 1 to 16
1 Machine feed value
2 Real current value
3 Servo input axis current value
6 Synchronous encoder axis current value Synchronous encoder axis
position unit
801 to 804
7 Synchronous encoder axis current value per cycle
8 Current value after composite main shaft gear Main input axis position unit 1 to 2 1 to 4 1 to 8 1 to 16
9 Current value per cycle after main shaft gear Cam axis cycle unit
10 Current value per cycle after auxiliary shaft gear
11 Cam axis current value per cycle
12 Cam axis current value per cycle (Real position)
*1
Lower limit
value
Upper limit
value
t
Lower limit
value
Upper limit
value
t