Mitsubishi Electric L02SCPU User's Manual And Reference page 101

(d) Execute it (service processing) while waiting for constant scan setting.
Constant scan
Constant scan
● When setting the constant scan, selecting "Execute it while waiting for constant scan setting." can perform the service
processing efficiently.
• When "Execute it while waiting for constant scan setting." is selected
Program execution
• When "Execute the process as the scan time proceeds." is selected (50% is set.)
0%
Program execution
● Even when there is no waiting time, the service processing (0.2ms) is performed. Therefore, when the waiting time is less
than 0.2ms, the constant scan time may be exceeded.
Request 1)
Program execution
END processing
Request 1)
Waiting time
Request 2)
The service processing is performed
during waiting time.
Program execution
END processing
Request 3)
Waiting time
Request 4)
END processing
Waiting time
Service processing
Service processing time
Scan time (constant scan setting)
50%
END processing
Service processing
Service processing time
Scan time (constant scan setting)
CHAPTER 3 CPU MODULE FUNCTIONS
Request 2) Request 4)
Request 3) Request 5)
100%
Waiting time
3
Peripheral
99