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Posted
I have to transcribe a program from an old one. I'm a bit uncertain about how timer functions are annotated. The old program printout looks something like this: T000 0S4 1<>0 T001 0S4 1<>0 T002 15S0 0<>0 T016 2S0 1<>1 I understand the Timer number part and duration part, but what about the last part (0<>0 etc.)?
Posted
I don't know and the customer dont know. The hardware was thrown away years ago. Now the customer wants to have a new similar system rebuilt with a new controller (GE PACSystems). He wants me to use the same old ladder logic. I have a printout from 1985. No PLC or processor type is mentioned.
Posted
If you don't have anything available to help you interpret the old program, then get a detailed description of how the machine is supposed to work and use that as your guide.

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