Configuration in STEP 7 using the ibaREQsym iba block family

For each Request module

1. Copy the following blocks from the iba S7 library to the blocks folder of your STEP 7 project, see iba S7 library. One set of Request blocks has to be called for each Request module (connection) in ibaPDA.

   • ibaREQsym_M, see ibaREQsym_M

   • ibaREQsym_PN, see ibaREQsym_PN, or alternatively ibaREQsym_6PN, see ibaREQ3sym_6PN

   • ibaREQsym_DB_PDA

   • ibaREQsym_Interface (PLC data type)

   Note
   	Only use Request blocks from the latest iba S7 library! Request blocks in application examples can be outdated and, thus, cause errors.

2. Call ibaREQsym_M within a cyclic interrupt OB (OB3x).

   
   

   

   
   

   Alternatively when using ibaREQsym_6PN: Call ibaREQsym_M within a cyclic interrupt OB (OB3x).

   
   

   

   
   

3. Call ibaREQsym_PN within the OB1 or a cyclic interrupt OB (OB3x).

   
   

   

   
   

   Alternatively when using ibaREQsym_6PN: Call ibaREQsym_6PN within a cyclic interrupt OB (OB3x).

   
   

   

   
   

For each additional Request module

• In the blocks folder, an ibaREQsym_DB_PDA data block has to be available for each Request module. Copy the data block and assign a new unambiguous DB number.

• Within OB1 or a cyclic interrupt OB (OB3x), ibaREQsym_M and ibaREQsym_PN (or ibaREQsym_6PN) have to be called once more with the new DB number for each Request module.

• Make sure that all instance data blocks are unique and that unique values are assigned for the ADR_SLOT parameters.

Final

• Load all blocks to the S7 CPU and restart the S7 CPU.