Siemens SIMATIC S7-400H System Manual page 333

Inserting the Flash card
Proceed as follows:
1. Set the reserve CPU to STOP and insert the FLASH Card into the CPU.
2. Reset the CPU using STEP 7.
3. Download the program data with the STEP 7 "Download User Program to Memory Card"
4. Switch to the CPU with the changed configuration using the "Operating Mode" dialog.
5. Next, insert the Flash Card in the CPU that is in STOP. Reset the CPU using STEP 7.
6. Carry out step 4: Download the program data with the STEP 7 "Download User Program
7. Execute a warm restart of the reserve CPU using the "Operating Mode" dialog. The
Removing the FLASH card
The online and offline data consistency described earlier also applies when you remove
FLASH Cards from a fault-tolerant system. In addition, the available RAM size must not be
less than the actual size of the STEP 7 program (STEP 7 Program > Block Container >
"Blocks" Properties).
1. Set the reserve CPU to STOP and remove the FLASH Card. Adapt the memory
2. Reset the CPU using STEP 7.
3. Download the block container using STEP 7.
4. Switch to the CPU with the changed configuration using the "Operating Mode" dialog.
5. Remove the FLASH Card from the CPU which is now in STOP. Adapt the RAM
6. Execute a warm restart of the reserve CPU using the "Operating Mode" dialog. The
S7-400H
System Manual, 03/2012, A5E00267695-11
command. Note: Select the correct CPU from the selection dialog.
This changes over the master/reserve roles; the CPU with the Flash Card is now the
master CPU. The reserve CPU is now in STOP.
to Memory Card" command. Note: Select the correct CPU from the selection dialog.
system status now changes to "Redundant" mode.
configuration as required.
configuration as required, and then perform a CPU memory reset.
system status now changes to "Redundant" mode.
System modifications during operation
17.8 Changing the CPU memory configuration
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