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S7-1200 CPU with digital input board

Created by: Milosh at: 4/29/2013 8:58 AM (1 Replies)

4/29/2013 8:58 AM	Rate (0)
Milosh Silver Member Joined: 8/16/2010 Last visit: 10/19/2018 Posts: 524 Rating: (3)	Hi all. I have CPU 1214C DC/DC/DC with SB1221. When I power supply signal board it have 24V on some inputs? Why? Nothing is connected to that inputs?

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4/30/2013 4:43 PM	Rate (0)
FreakOnALeash Bronze Member Joined: 2/11/2010 Last visit: 9/21/2015 Posts: 267 Rating: (22)	Hello, the 200kHz signal boards support sourcing inputs only. So it's true when its potential is M.

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