10/9/2019 9:38 AM | |
Joined: 2/24/2015 Last visit: 1/25/2023 Posts: 306 Rating: (77) |
According to IEC 61131-2, there are three types of digital inputs. The S7-1200 controller has type 1 inputs, so only 3-wire position sensors can be connected to it. Connection diagram for S7-1200:
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10/9/2019 1:06 PM | |
Posts: 3 Rating: (0) |
I have confusion here like this. I have link below where there mention of about wiring NPN/PNP proximity sensor my question is if i like to connect NPN proximity sensor i need to connect external 24v supply to 1m or inbuilt 24v will be given in plc. Assume i have 1 NPN and 1 PNP proximity sensor to be connected in this case how i could able to connect. 1)in this above scenario i should use only NPN?? 2) weather PLC able to detect 5v Signal?? 3) weather external 24v signal required as shown in below link?? https://www.ato.com/how-to-connect-npn-pnp-proximity-sensor-to-plc
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10/9/2019 1:21 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685) |
Hello Ampnayak; Have a look at the following document, it should clarify the notions of sourcing/sin kind and NPN/PNP: https://support.industry.siemens.com/cs/us/en/view/23451499 Hope this helps, |