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Scalance??Web Based Management???Please help

Posted: Sat Oct 01, 2011 7:15 pm
by alansal
A scalance X204-2 is connected to system... The scalance seems to be working normally but the fault led is on...

I checked the internet for same problems and found this;

Need to find out the reason for fault (lit red "F" LED) on scalance X204-2. The communication is working fine for all the ports (flashing yellow/green LED's for ports), but the "F" is still red.
No fault mask have been used for any of the ports, and redundant power is also disabled.

The guy answering this post mentions of Web Based Management but i don't know of any...


Please help, i am definitely open to all advices... (I have to connect and -if possible- remove fault without restarting.. Due the system is working in a plant and plant is on....


Thanks in advance,

Re: PLC S7-315-2 PN/DP Fault... Please help

Posted: Sun Oct 02, 2011 1:18 am
by vankata
When CPU is dropped in STOP mode, look (online) in PLC/CPU Messages/...... You will see the reason.
Good luck.

Re: PLC Fault... Please help

Posted: Sun Oct 02, 2011 6:33 am
by Umencho
What are behavior of CPU' leds?

Re: PLC Fault... Please help

Posted: Mon Oct 03, 2011 10:32 am
by alansal
The system is connected to the CPU with "IM 153-4 PN (ERTEC200) for S7-300 SMs"...

Thanks for your interest but there is only problem left is the fault led on the scalance (X204-2)...

Scalance is woking normally but somehow the fault led is on... i checked the internet for same faults and a reply made me interested;

You can delete the name in the Web Based Manager of the switch. Then the F-LED should return to normal again and the Fault should disappear.

what is web based manager????easy to use??? can please someone help???


thanks in advance...

my kind regards.....

Re: Scalance??Web Based Management???Please help

Posted: Sat Nov 22, 2014 12:24 pm
by AmineIP90
hi bro,
try to connect the second redundancy power supplie (L2,M2)