Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

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APPX
Appendix 11 Target List and Operation Details of the Device/Label Access Service Processing Setting
Communication function using an engineering tool
Of the communication functions using an engineering tool, the functions targeted for the setting of the Device/Label access
service processing are indicated.
*1 Only the file register file can support it. (Other file access is always executed asynchronously from the program.)
Operation details
Operations enabled by setting details of the device/label access service processing setting are as follows.
Execute the process as scan time proceeds
This setting is useful to execute the device/label access service processing in a way commensurate with the system size. It
allows the system to be designed without considering the device/label access service processing time because it is
determined as a function of the scan time.
Ex.
When "Scan time ratio = 10%" is set
Function
Writing data to the programmable controller File register file
Device data (Local device also included)
Global label and local label data
Reading data from the programmable controller File register file
Device data (Local device also included)
Global label and local label data
Device data storage file
Monitor function Circuit monitor
Device/buffer memory batch monitor
Label batch monitor (local label included)
Buffer memory monitor
Ethernet function File transfer (FTP server)
*1
File transfer (FTP client)
*1
(1)
(3)
(2)
(4)
1ms
1.2ms
Control processing
(At program execution)
Refresh processing
Request 1 Request 2 Request 3 Request 4 Request 5
Program execution
END processing
Communication processing
Device/label access service
processing request
Engineering tool
Communication
processing
Refresh processing
Program execution
END
processing
Refresh processing
Program execution
Request 2
Request 1
Request 3
Request 3
Request 4
END
processing
Second scan (10ms)
First scan (10ms)
Third scan (12ms)