11/4/2021 9:13 PM | |
Joined: 9/27/2006 Last visit: 10/5/2024 Posts: 12283 Rating: (2685) |
Hello adamlahadi; Look at the attachment below, it shows 3 different digital modules for the S7-1200 and one CPU's integrated DI connections, each with its own particularities for sinking and sourcing connections. This image was taken from the S7-1200 Easy Book: https://support.industry.siemens.com/cs/ww/en/view/39710145 So, the first element you have to determine when you want to have a choise of sink or sink with a S7-1200 CPU or digital module is: does it support both sinking and sourcing connections, and how does the circuit have to be connected to the modules for it to work properly,,, You must check out the technical details of your digital inputs and outputs in the Siemens documentation to make these determinations. Hope this helps, |
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