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(c) Operation when "Specify service process time." is selected
1)
Operation when 0.5ms is set
2) Operation when 1ms is set
If no request data exists when setting the service processing time, END processing speeds up by the request processing
time. (The CPU module does not wait for requests.)
Figure 6.100 Operation when 0.5ms is set
Figure 6.101 Operation when 1ms is set
Program execution
END processing
1st scan
Request 1
Program execution
END processing
2nd scan
GX Developer
Program execution
END processing
3rd scan
Request 1
Request 2
Request 2
0.5ms
When the time required for processing one request
exceeds the service processing time (0.5ms) , the
service processing is suspended and the processing
is performed at END processing in the next scan.
The scan time increases equally.
Request 1
Request 2
Request 3
Request 4
Request 5
Program execution
END processing
1st scan
Request 1
Program execution
END processing
2nd scan
GX Developer
Program execution
END processing
3rd scan
Request 2
Request 2
Request 3
1ms
Request 3
Request 4
Several requests are processed until the time exceeds
the specified service processing time (1ms).
When the time exceeds the specified service
processing time, the service processing is suspended
and the request is processed continuously at END
processing of next scan.
Although multiple processing is performed at
one END processing, the scan time increases equally.
Request 1
Request 2
Request 3
Request 4
Request 5