Mark Detection Function - Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual

4.3

Mark Detection Function

Any motion control data and all device data can be latched at the input timing of the high-speed input request signal. Also,
data within a specific range can be latched by specifying the data detection range.
The following three modes are available for execution of mark detection.
Continuous Detection mode
The latched data is always stored at mark detection.
High-speed input request signal
Mark detection data
storage device
+0n
Specified Number of Detection mode
The latched data from a specified number of detections is stored.
Ex.
Number of detections: 3
High-speed input request signal
Mark detection data
storage device
+0n
+1n
+2n
+3n
Ring Buffer mode
The latched data is stored in a ring buffer for a specified number of detections. The latched data is always stored at mark
detection.
Ex.
Number of detections: 4
High-speed input request signal
Mark detection data
storage device
+0n
+1n
+2n
+3n
"n" in above figure is different depending on the data type storage device.
• 16-bit integer type: 1
• 32-bit integer type: 2
• 64-bit floating-point type: 4
4 AUXILIARY AND APPLIED FUNCTIONS
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4.3 Mark Detection Function
The 4th detection
and later are ignored.
The 3rd detection
The 5th detection
replaces the previous
first detection.
The 4th detection