Mitsubishi Electric MELSEC-Q Series User Manual page 743

Storage item
Number of mark
[Md.800]
detection
Mark detection data
storage area 1
[Md.801] to
Mark detection data
storage area 32
(3) Mark detection monitor data
Storage details/storage value
The number of mark detections is stored.
"0" clear is executed at power supply ON.
Continuous detection mode: 0 to 65535 (Ring counter)
Specified number of detection mode: 0 to 32
Ring buffer mode: 0 to (number of buffers - 1)
Refresh cycle: At mark detection
The latch data at mark detection is stored.
Data for up to 32 times are stored in the specified number of
detection mode.
Data are stored as a ring buffer for number of detections in the
ring buffer mode.
-2147483648 to 2147483647
Refresh cycle: At mark detection
[Md.800] Number of mark detection
The counter value is incremented by 1 at mark detection. Preset "0" clear in
"[Cd.800] Number of mark detection clear request" to execute the mark detection
in specified number of detections mode or ring buffer mode.
[Md.801] Mark detection data storage area 1 to 32
The latch data at mark detection is stored. Data for up to 32 times can be stored in
the specified number of detection mode or ring buffer mode.
[4] Precautions
When the data of "[Pr.802] Mark detection data type" or "[Pr.803] Mark detection
data axis No." is selected incorrectly, the incorrect latch data is stored.
For the data of "[Pr.802] Mark detection data type", set the item No. instead of
specifying the buffer memory No. directly. When "8: Current value after
composite main shaft gear" to "12: Cam axis current value per cycle (real
position)" are set to "[Pr.802] Mark detection data type" and the mark detection is
executed other than during synchronous control, the value different from the
actual output monitor data may be latched.
14 - 31
Chapter 14 Common Functions
Buffer memory address
54960+80k
54962+80k,
54963+80k
to
55024+80k,
55025+80k
k: Mark detection setting No.-1