Profibus to M172

[Conair_Ian]

I am wondering if anyone can point me in the correct direction here in regards to an upcoming project. I will have 3 Sabroe refrigeration compressor controllers (Unisab 2) that communicate together on a central rack. They have the ability to connect to a Profibus network. I am wanting to communicate to them with my TM172PDG42RI. I have seen online there are gateways available to act as a Profibus master as well as MODBUS slave. Is this needed or is there an "easy" way to do this with TM172 hardware that i am missing?

[Bastian_Schmitz · Accepted solution]

You need in any case an third party gateway. In the past there was a Profibus Slave Communication modul for TM171P (not TM172) available. But this is now a legacy product. And is was only a slave modul. A view of my cusotmers work sometimes with HILSCHER Gateways. Mostly Profibus Slave <-> Modbus RTU/TCP. There are also Profibus Master Gateways available. I´n my opinion you could use on controller site RS485 or TCP. It will not make a big difference. On topic during integration will be the BYTE and WORD Order.

[Conair_Ian]

I have purchased a hilscher gateway model NT 50-DP-EN and found the GSD files through another forum. If these are of any use to anyone let me know. I am currently in the middle of programing things but it seems this gateway only allows access to a single slave device. Does anyone know of a gateway that will access 3 slaves or am i handcuffed to using a gateway per slave to get them on my network with the TM172 and CM5 HMI.