Step 1: Editing Parameters Offline - Siemens SIMATIC S7-400H System Manual

Note
After changing the hardware configuration, download takes place practically automatically.
This means that you no longer need to perform the steps described in sections Step 2:
Stopping the reserve CPU (Page 336) to Step 5: Transition to redundant system mode
(Page 339). The system behavior remains as described.
You will find more information in the HW Config online help "Download to module ->
Download station configuration in RUN mode".
17.9.2

Step 1: Editing parameters offline

Starting situation
The fault-tolerant system is operating in redundant system mode.
Procedure
1. Edit the module parameters offline in HW Config.
2. Compile the new hardware configuration, but do not load it into the target system just yet.
Result
The modified hardware configuration is in the PG/ES. The target system continues operation
with the old configuration in redundant system mode.
S7-400H
System Manual, 03/2012, A5E00267695-11
System modifications during operation
17.9 Re-parameterization of a module
335