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 function block folder of your STEP 7 project, see iba S7 library.

   • ibaREQ3sym_M, see ibaREQ3sym_M

   • ibaREQ3sym_UDP, see ibaREQ3sym iba block family

   • ibaREQ3sym_DB_PDA

   • ibaREQ3sym-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 Request blocks in application examples can be outdated and, thus, cause errors.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 preferably within OB1.

   
   

   

   
   

3. Call ibaREQ3sym_UDP preferably a cyclic interrupt OB (OB3x).

   
   

   

   
   

For each additional Request module

• An ibaREQ3sym_DB_PDA data block must be available in the function block folder for each Request module. Copy the data block and assign a new unique DB number.

• ibaREQ3sym_M and ibaREQ3sym_UDP have to be called once more with the new DB numbers for each Request module.

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

Completion

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