HELP! 6th quarter EET student in need of a PLC lab project


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If anyone out there has a schematic for a fairly simple ladder logic program (ex: stop light, conveyer belt etc) I would very much appreciate the help. I am at a total loss w/the ladder logic.

Hakan Ozevin

Ladder logic is quite simple:
1. Serial connection of contacts like -I I-I I- is an AND gate
2. Parallel connection of contacts is an OR gate
3. A normally closed contact like -I/I- means NEGATED input
4. An output (coil) is denoted as -( )-
5. The rest of the functions (timer, counter) are shown as blocks

You can download sample programs and demo software from PLC manufacturers sites.

I hope this will help.

Hakan Ozevin