Coincidence Detection - Mitsubishi Electric MELSEC-L Series LD40PD01 User Manual

10.1

Coincidence Detection

The output of the multi function counter block is turned on when a count value matches with a compare value. The compare
value is required to be set in advance as a coincidence detection value.
The following describes a link and parameter example of coincidence detection. With the example setting, an external output
signal turns on when the count value becomes 1000 and an interrupt request is sent to the CPU module. Note that this link
example is for when a 32-bit unsigned multi function counter block is used.
Count value
High
Coincidence
Low
output signal
High
Interrupt request signal
to the CPU module
Low
Link and parameter
The following shows a link example of the hardware logic outline window and a link example and parameter setting example
of the multi function counter block detail window.
■Hardware logic outline window
Phase A
input pulse
Phase B
input pulse
Output signal from Counter_0
1001
1000
999
Coincidence
detection signal
Interrupt program
start
10 BLOCK LINK EXAMPLES
10.1 Coincidence Detection
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