Mitsubishi Electric melsec q00ujcpu - Page 284

CHAPTER6 FUNCTIONS
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6.24 Service Processing 6.24.1 Service processing setting
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(d) Operation when "Execute it while waiting for constant scan setting." is selected
● 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
• When "Execute the process as the scan time proceeds." is selected (50% is set.)
● 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.
Figure 6.102 Operation when "Execute it while waiting for constant scan setting." is selected
Program execution
Waiting time
END processing
Program execution
END processing
Constant scan
GX Developer
Request 1
Request 2
Request 3
Request 4
Waiting time
Constant scan
The service processing is performed
during waiting time.
Request 1
Request 4
Request 2
Request 3
Request 5
Constant scan
Program execution
END processing
Wait time
Service processing
Scan time (constant scan setting)
Service processing time
Program execution
END processing
Wait time
Service processing
Scan time (constant scan setting)
0
％ 50％ 100％
Service processing time