S7 300 PLC I/O Module trouble shooting


Thread Starter


Dear sir

Can any one help me in how to troubleshoot the S7 300 I/O modules. Here my SF LED glows. I want the the practical debugging procedure. Can any one help me in this matter.
Dear Sir,
If the SF LED is glowing that means there some trouble in your Logic.In order to get rid of this LED,go in 'menu' at the top,here you will find a heading PLC,press it,then you must go in 'module informaton'.A window will open, click on DIAGNOSTICS-you will find the error message & the cause of the error.Further click on STACK,then go to I STACK-which will take you to the block where you have committed the error.Kindly try this you will see that your problem will be solved easily.

Thanking you

Sincerely yours