Modbus RTU on VIPA CPU314SC with TIA Potrtal 12

Hi All.

Could you please help me with this Modbus I've been trying to set up for the last 10 weeks!!! I have an VIPA CPU314SC and trying to connect to temperature module through Modbus RTU.
Could you please show me how to configure the:
- Modbus_Comm_Load
- Modbus_Master

Please the photos attached.
This Vipa CPU has 2 RS485 interfaces, one used for MPI the other I've changed from Profibus to PtP (Not sure if I did it right as it is quite complicated using the 'speedbus'),

Thanks in advance.

Hi!

I think you try to use a wrong set of function blocks.
You should rather try with the VIPA serial blocks.
Check the manual, from page 175 onwards:

http://www.vipa.com/en/products/control-systems/300s/cpus/?tx_vipaproducts_pi1[tab]=1&cHash=1ed530b27ad5fc4dbf2a98e8b8cc9517

Kalle