Hi All,

Im using S7-1217C on projec and I want to use Differential input for communication RS-485 with another Device. But I didnt faund any selection enable to Tia Portal V14 Configuration. Do know anyone How can I use Differential inputs for communicate RS-485, and do have any application how is using Differential inputs like RS-485 communication.

B.R

Erion 

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Split from S71200 differential inputs CPU1217c.

Hello,

pls explain better what you want to do.

Hello,

but these are inputs, simply sry I see this inputs like solution for some kind of encoders probably but why you simply not choose comm module or comm board? In case you want use them as communication system, you need also drive them as is required but these are only inputs. Hope I'm not wrong with my info...

Update: sry I see still big problem with this idea, also how you'll be make filtering, timimg, reading, setting of signal, probably hard work. My opinion. Simply for theses kind of solutions there are comm modules and CB comm board.