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Entry type: FAQ Entry ID: 32158156, Entry date: 11/11/2008
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How do you use a flash card to download the safety program to a fail-safe CPU S7-400?

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Description:
Because the CPUs S7-300 and S7-400 have different storage concepts, there are different procedures for loading the safety program. This entry describes the procedure for using

  • a fail-safe CPU S7-400 with memory card (flash card)
  • and the Distributed Safety option software.

You have two options for loading the safety program.

Option 1: Write to the memory card in the CPU
 

No. Procedure Notes / Explanation
1 Make sure that there are no more blocks in the CPU's internal load memory. You can do this by resetting the CPU.
2 Switch off the CPU's power supply.  
3 Slot the memory card into the CPU.  
4 Switch on the CPU's power supply.  
5 Connect your PG/PC with the CPU. In the SIMATIC Manager you can check the interface set via Tools -> PG/PC Interface.
6 Select the block container in the SIMATIC Manager.

Fig. 01
 
7 In the SIMATIC Manager menu you select
PLC
-> Load user program to memory card
  • Before copying, make sure that your safety program has a consistent signature.
  • The action is only possible in the STOP mode.
  • All blocks and system data are written to the memory card; the safety program must always be on the flash card used.
  • It is not possible to load individual F blocks; the procedure described here applies.

Option 2: Write to the memory card with USB prommer outside the CPU
 

No. Procedure Notes / Explanation
1 Slot the memory card into the USB prommer.  
2 In the SIMATIC Manager menu you select
File
-> S7 Memory Card -> Open
 
3
  • Position the windows of your project and the memory card next to each other.
  • Copy the block container to the memory card (e.g. using drag-and-drop).
  • Before copying, make sure that your safety program has a consistent signature.
  • All blocks and system data are written to the memory card; the safety program must always be on the flash card used.
  • It is not possible to load individual F blocks; the procedure described here applies.

Fig. 02
4 Close the "S7 Memory Card" window.  
5 Slot the memory card into the CPU that is without voltage. You can commission the CPU.

Consistent signature
Proceed as follows to check whether your safety program has a consistent signature.
 

No. Procedure
1 Select the block container in the SIMATIC Manager.
2 In the SIMATIC Manager menu you select
Tools
-> Edit safety program
3 Check the signature.


Fig. 03

Keywords:
Safety Integrated