Refresh Processing Time - Mitsubishi Electric MELSEC iQ-R Series User Manual

Refresh processing time

The refresh processing time [s] is included in the scan time of the CPU module. For the scan time, refer to the following:
MELSEC iQ-R CPU Module User's Manual (Application)
The refresh processing time [s] for refresh settings is as follows:
• Refresh processing time [s] = Refresh read (transfer to the CPU) time
The refresh read time varies depending on the refresh destination selected in "Target."
When "Target" is a module label or a refresh data register (RD)
The following table lists the refresh read time of when the RnCPU is used.
Model
R60TCTRT2TT2, R60TCRT4
R60TCTRT2TT2BW, R60TCRT4BW
R60TCTRT2TT2 (Q compatible mode), R60TCRT4 (Q compatible mode)
R60TCTRT2TT2BW (Q compatible mode), R60TCRT4BW (Q compatible
mode)
When "Target" is "Device"
The refresh read time is calculated from the number of items with refresh settings and their number of transfers (words). For
the calculation method, refer to the following:
MELSEC iQ-R CPU Module User's Manual (Application)
For calculation, replace the items in a calculation formula with the following items in Description:
Item
Number of items with refresh settings
Refresh time for 1st to nth setting items (A)
*1 The value is the time of when the RCPU is used.
Ex.
For the R60TCTRT2TT2, read refresh settings are configured in all of 104 items (104 words in total).
1040.98+0.05104+11.6=118.72s
Hence, the refresh read time is 118.72s.
2 PARAMETER SETTING
140
2.5 Refresh Settings
With refresh settings
24.64s
26.02s
50.12s
51.50s
Description
Number of devices in use
*1
0.05s per word