6
FUNCTIONS
6.25 Service Processing
6.25.2 Service processing
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(3) Operations for each service processing setting
Operation details for each service processing setting is described below.
(a) Operation details when "Execute the process as the scan time proceeds." is
selected
1) Operation when "10%" is set
POINT
If no request data for service processing exists, END processing speeds up by the
request processing time. (CPU module does not wait for requests.)
2) Operation at the time of setting constant scan
The calculation of the service processing time is a calculation of the
percentage toward the time excluding the wait time of the constant scan from
the scan time, not a calculation of the percentage toward the scan time.
[Example]
When setting Percentage of scan time = “50%”
POINT
When setting the constant scan, select [Execute it while waiting for constant scan
setting.] to execute the service processing efficiently. (
Section 6.25.2(3)(d))
Figure 6.111 Parameter setting screen
Figure 6.112 Operation at the time of setting constant scan
Program execution
END processing
1st scan
(10ms)
Request 1
Request 3
Program execution
END processing
2nd scan
(10ms)
Request 2-1
Program execution
END processing
3rd scan
(12ms)
Request 3
GX Developer
Request 2-2
1ms
1ms
1.2ms
The service processing time varies depending on the
scan time (program execution time)
When the time required for processing one request
exceeds 10% of one scan time, the service processing is
suspended and the request is processed continuously at
END processing of next scan.
Request 5
Request 4
Request 2
Request 1
Program execution
END processing
Wait time
Program execution
Scan time (constant scan setting)
0%
50%
100%
Service processing
time
Содержание Q00CPU
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