Wiring of any PLC is one of basic task in PLC Programming. There are two way of wiring any PLC input side.
1: Sink wiring
2: Source wiring
First of all we discuss about the sink wiring. In this wiring we connect the Postive terminal of the Powe supply with S/S (Sink/Source Pin) or in SIEMENS 1M Pin as below in diagram
The Source wiring is in which we connect the Negative – terminalof the Power Supply with S/S (Sink/Source Pin) or in SIEMENS 1M Pin as below in diagram
![](https://technicalfiles.org/wp-content/uploads/2024/01/s7-1200-wiring-1024x576.jpg)
You can also work on Automation Studio Software for the wiring of the PLC and also You can download the TIA PORTAL or any other PLC related software from this link.
For PLC Programming Video See the Below Comprehensive lecture on PLC Programming.