Service Processing; Service Processing Setting - Mitsubishi Electric Q01UCPU User Manual

3.24

Service Processing

3.24.1

Service processing setting

This function allows to set the time and the number of times of service processing performed at END processing by
parameters. This function also improves the response of communication with a peripheral and restrains the increase of
scan time due to service processing. This achieves the configuration of service processing environment optimum for
the system.
The service processing refers to the following:
• Communications via intelligent function modules (A link refresh from network modules is not included.)
• Communications via USB cables, RS-232 cables, and the built-in Ethernet port (Communications with
programming tool and GOT)
Using the COM instruction enables service processing during program execution of same performance with service
processing at END processing. Therefore, the high-speed service processing response can be performed even if the
scan time is long.
(1) Parameter setting
Set the parameters in the PLC system tab of the PLC parameter dialog box.
To perform the service processing, select any of the parameter items in the following table. The setting value of
deselected parameter cannot be entered. (Default: Execute the process as the scan time proceeds. = 10%)
Item
Execute the process as
the scan time proceeds.
Specify service process
time.
Specify service process
execution counts.
Execute it while waiting
for constant scan setting.
238
Description
Set the percentage of service processing
for one scan.
Set the time of service processing for one
scan.
Set the number of service processing for
one scan.
Set whether to perform service
processing during waiting time for
constant scan setting.
Setting range
• Range: 1 to 99%
• Unit: 1%
• Range: 0.2ms to 1000ms
• Unit: 0.1ms
• Range: 1 to 10 times
• Unit: 1 time
-
Remarks
Default when selected =10%
Default when selected =0.2ms
Default when selected
=1 time
Even when the waiting time is
0.2ms or less, the service
processing time (0.2ms) will be
added to the scan time at service
processing execution.