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Issue 140 March 2002
Replacing Relays with Ladder Logic
Part 1: Getting Ready for the Climb

 


by Fred Eady

Top of the ladder

Unlike my plumber friends, I’m on the roof now and I intend to stay here at least through one more article period. There is still plenty of T100MD888+ and Internet TRiLOGI stuff to talk about. And, I’ve got it from reliable sources that some tricky new TRiLOGI software may find its way to the Florida room in time for Part 2. Until then, it’s pretty obvious to me that the engineering staff at Triangle Research International believes that PLCs aren’t complicated, they’re embedded.