Appendix 3 Cpu Module Processing Time Of Slmp - Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual

Appendix 3
When accessing the CPU module from an external device using SLMP communication, the following "intervention time to the
scan time" and "number of scans for processing" of the CPU module side are required. On the request from the external
device using SLMP communication, the CPU module processes a specified number of points during each END processing in
case the CPU module is running.
Item Command
Type Operation
Device Read 0401
Write 1401
Read Random 0403
Write Random 1402
Read Block 0406
Write Block 1406
Remote Read Type Name 0101
Control
*1 This is the processing time when accessing with only word access points specified.
*2 This is the processing time when 1 is set to "CPU Parameter" - "Service Processing Setting" - "Device/Label Access Service Processing
Setting" - "Set Processing Counts" of GX Works3.
• Number of scans required for processing
The CPU module processes only one command during an END processing. If GX Works3 or other modules
are also accessing the CPU module simultaneously, the number of scans required for processing may
increase due to the waiting time.
• Method of reducing the intervention time to the scan time
Adjust the service process execution count of the CPU module in "CPU Parameter" - "Service Processing
Setting" - "Device/Label Access Service Processing Setting" to reduce the intervention time to the scan time.
(MELSEC iQ-F FX5 User's Manual (Application))
• When extension of scan time affects the control
Access multiple times with less points.
CPU Module Processing Time of SLMP
Subcommand Access points
1) / 2)
0001 1/3584
0000 1/960
0001 1/3584
0000 1/960
0000 1/192
0001 1/188
*1
0000 1/160
0000 1/960
0000 1/960
0000 (one station)
*2
Intervention time [ms]
(extension of scan time)
Access point 1) Access point 2)
0.03 1.51
0.03 0.21
0.03 1.46
0.03 0.21
0.03 1.71
0.03 1.53
0.03 1.43
0.03 0.21
0.03 0.22

0.02

Appendix 3 CPU Module Processing Time of SLMP

A
Number of
scans
required for
processing
1
1
1
1
1
1
1
1
1
1
APPENDIX
105