Internet PLC Forum

General => Technical support => Topic started by: seitech on September 30, 2003, 07:33:08 PM

Title: What does "i" and "r" mean
Post by: seitech on September 30, 2003, 07:33:08 PM

I couldn't find in manual what the little i and r meant in the ladder diagrams (i.e. next to start, relay symbols, etc.)  I'm new to all this so need to ask this simple question.

Thanks

Title: Re: What does "i" and "r" mean
Post by: support on October 01, 2003, 11:59:47 AM

A little "i" means that the contact is an input, "o" means output, "r" means internal relay, "t" means timer and "c" means counter.

You can press the <F3> key to toggle whether to display this little "i","r" etc.

Title: Re: What does "i" and "r" mean
Post by: seitech on October 01, 2003, 04:38:45 PM

Thanks, I appreciate the info.