Mitsubishi MELSEC-Q QD77MS - Page 798

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Chapter 14 Common Functions
Pr.807
Mark detection mode setting
Set the data storage method of mark detection.
Mode
Setting
value
Operation for mark detection
Mark detection data
storage method
Continuous
detection mode
0 Always
The data is updated in the
mark detection data
storage area 1.
Specified number of
detection mode
1 to 32
Number of detections (If the
number of mark detection
counter is the number of
detections or more, the mark
detection is not executed.)
Ring buffer mode -1 to -32
Always
(The mark detection data
storage area 1 to 32 is used as
a ring buffer for the number of
detections.)
The data is stored to the
mark detection data
storage area "n".
n = (1+ Number of mark
detection counter)
(2) Mark detection control data
Buffer memory address
Setting item Setting details/setting value
Default
value
QD77MS2
QD77MS4
QD77MS16
Cd.800
Number of mark
detection clear
request
Set "1" to execute "0" clear of number of mark detections.
"0" is automatically set after completion by "0" clear of
number of mark detections.
1: 0 clear of number of mark detections
Fetch cycle: Operation cycle
0 54640+10k
Cd.801
Mark detection
invalid flag
Set this flag to invalidate mark detection temporarily.
1 : Mark detection: Invalid
Others : Mark detection: Valid
Fetch cycle: Operation cycle
0 54641+10k
k: Mark detection setting No.-1
Cd.800
Number of mark detection clear request
Set "1" to execute "0" clear of " Md.800 Number of mark detection counter". "0" is
automatically set after completion by "0" clear of "
Md.800 Number of mark detection
counter
".
Cd.801
Mark detection invalid flag
Set "1" to invalidate mark detection temporarily. The mark detection signal during
invalidity is ignored.