Count Response Delay Time - Mitsubishi QD60P8-G User Manual

5 DETAILS AND SETTING OF FUNCTIONS

5.9 Count Response Delay Time

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The count value of the QD60P8-G is delayed for the following reasons. Please take
this into consideration when using the module as a counter.
• A delay occurs due to the scan time of a sequence program at the time of count start
processing using the count enable (Y18 to Y1F).
• A delay occurs due to the control cycle (10ms). A maximum of 20ms (one control
cycle 2) delay occurs from when the count enable (Y18 to Y1F) is turned ON/OFF
until the "input pulse value" of the buffer memory is displayed. Similarly, a delay also
occurs at a counter reset request.
The calculation expression of the delay time is as indicated below.
Maximum delay time [ms] = (1 scan time + 20) [ms]
MELSEC-Q
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