Step 7, Step 1: Editing The Hardware Configuration Offline - Siemens SIMATIC S7-400H System Manual

System modifications during operation
17.6 Removing components in STEP 7
Exceptions
This general procedure for system modifications does not apply to removing interface
modules (see section Removing interface modules in STEP 7 (Page 321)).
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 7, step
3: Stopping the reserve CPU (Page 315) to STEP 7, step 6: Transition to redundant system
mode (Page 318). 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".
17.6.1

STEP 7, step 1: Editing the hardware configuration offline

Starting situation
The fault-tolerant system is operating in redundant system mode.
Procedure
1. Perform all the modifications to the hardware configuration relating to the hardware being
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. The target system continues operation
with the old configuration in redundant system mode.
314
removed offline.
System Manual, 03/2012, A5E00267695-11
S7-400H