Siemens S5-95U

OK
so you have a program fault are you referring to OEM manual ...
We dont see red LED on the screenshot ...

Also where do you see red led ..is that on that output/inpurt module card .. or on CPU..

What type of io module is it
 
I was confused with the operation of Green LED on and the PLC not functioning. What can be the reason, I also got the PLC checked by a Electronic Technician
 
It seems that situation is not under control at your site0...

I strongly advise you to check what /whichLED is blinking and where situated..

As per OEM manual it can be also on I/O module board/card...

Cheers!
 
Also try to connect and check via simatic softwqare even if you got kind of diagnostics events messages report...
I dont remeber which FUCNTION can be called to monitoring such PLC ..look at OEM Manual

AS WE CANt see "STOP" led blinking red on that screenshot

Maybe you are talking about this one...

ISTACK function should be used for diagnostic and troubleshooting ...
 
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