Configuration in STEP 7 using the ibaREQ3sym 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.

   • ibaREQ3sym_M, see ibaREQ3sym_M

   • ibaREQs3ym_NetE_dc, see ibaREQ3sym_NetE_dc

   • ibaREQs3ym_NetE_send, see ibaREQ3sym_NetE_send

   • 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 Request blocks in application examples can be outdated and, thus, cause errors.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 ibaREQ3sym_M.

   
   
   
   
   

3. Call ibaREQ3sym_NetE_dc within the OB where the data is updated.

   
   
   
   
   

4. Call ibaREQ3sym_NetE_dc within OB1 or a cyclic interrupt OB at the required send interval.

   
   

   

   
   

For each additional Request module

• In the blocks folder, an ibaREQ3sym_DB_PDA data block has to be available for each Request module. Copy the data block and assign a new unique DB number.

• ibaREQ3sym_M and ibaREQ3sym_NetE_send 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 connectionId parameters.

Final

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