Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

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9 PARAMETER SETTING
9.2 Module Parameters
Refresh processing time
A refresh processing time [

s] is a constituent of the scan time of the CPU module. For details on the scan time, refer to the
following.

MELSEC iQ-R CPU Module User's Manual (Application)
The refresh processing time [

s], which is taken for refresh processing, is given by:
• Refresh processing time [

s] = Refresh read time (refresh data transfer to the CPU module)
The refresh read time varies depending on the settings of "Target".
With the inter-module synchronization function used, the refresh read time is also added to the execution time of an inter-
module synchronous interrupt program.
■
When "Target" is a module label or a refresh data register (RD)
The following table shows the refresh read time with an R

CPU used.
■
When "Target" is a specified device
Calculate the refresh read time according to the number of items and the number of their transfer data (word) that are set to
be refreshed. For the calculation method, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
Classification Number of the
axis set When using the refresh settings When using the inter-module
synchronization function
Refresh read time 1 17.58

s 12.63

s
2 23.56

s 13.66

s
3 29.54

s 14.69

s
4 35.52

s 15.72

s