I'm sure this is a very simple question but what is the attached logic snippet doing? I suspect that it's implementing an on-delay / off-delay timer but I'm not quite sure.
According to the Modicon documentation the upper output if a Timer is on if TIMER = PRESET and the lower output is on if TIMER < PRESET but applying that to the logic doesn't doesn't produce the expected control.
Any ideas?
According to the Modicon documentation the upper output if a Timer is on if TIMER = PRESET and the lower output is on if TIMER < PRESET but applying that to the logic doesn't doesn't produce the expected control.
Any ideas?