as1988

Thank you, much appreciated.

There is just one 24VDC power supply and it is the PLC's service power supply. 

Ok, thank you.

It is not outside 24VDC that are being supplied to the PLC.   24VDC are supplied by the PLC and then distributed further - it is, so called, service power supply.    

PLC: Mitstubishi FX3G 24MR/ES   There is 220VAC coming to the PLC supply pins, but no indication LEDs are switched on and there is no 24VDC service supply. This PLC is used to control the sauna. Before dismantling PLC, is it possible that there is some unmet condition that is preventing PLC from starting?    For example, if Emergency stop is activated and wired to the PLC input, can it prevent PLC from starting? Just a reminder, there is 220VAC at the L and N pins of the PLC.    

Yeah... Not gonna work...

Thank you.   Let's say we will connect the switch to the input X007.   So, just to avoid any misunderstanding, would you connect it like in the attached picture?            

Hello everybody!   I have a Capacitive switch with the following specifications: https://docs.rs-online.com/cfa1/0900766b81586b27.pdf I would like to connect that switch to the Mitsubishi FX3U-64M input. As show on the attached picture, terminal S/S and terminal 24V are shorted, which means that it is a sink input.   Question 1: Is my switch NPN or PNP type or it is neither? Question 2: Can I connect my switch to the sink input without damaging PLC or the switch? If yes, how?     Thank you so much in advance!