Table 13- 8 For The Monitoring Times With Redundant I/O - Siemens SIMATIC S7-400H System Manual

Using I/Os in S7–400H
13.5 Other options for connecting redundant I/Os
Monitoring times during link-up and update
NOTICE
If you have made I/O modules redundant and have taken account of this in your program,
you may need to add an overhead to the calculated monitoring times so that no bumps
occur at output modules (in HW Config -> Properties CPU -> H Parameter).
An overhead is only required if you operate modules from the following table as redundant
modules.
Table 13- 8
Module type
ET200M: Standard output modules
ET200M: HART output modules
ET200M: F output modules
ET200L–SC with analog outputs
ET200S with analog outputs or technology modules
Follow the steps below:
● Calculate the overhead from the table. If you use several module types from the table
● Add this to all of the monitoring times calculated so far.
212
For the monitoring times with redundant I/O
redundantly, apply the largest overhead.
Overhead in ms
2
10
50
≤ 80
≤ 20
System Manual, 03/2012, A5E00267695-11
S7-400H