Welcome to ClassicPLC.com

Home of the Legacy Programmable Logic Controllers


The Classic PLC Infobase is an on-going project to amass and accumulate as much public data as is available on the legacy Programmable Logic Controllers.


Within the Infobase forums you will find an expansive and ever-growing listing of legacy PLC equipment. These pages may include; descriptions, specifications, pinouts, hookups, images, and even repair tips. Search by keyword description, part number, or browse the manufacturer listings of parts posted.


Register for free and join our PLC forum community today. Share your tips or tricks, or join a conversation about something that interests you.


So grab a cup of coffee, sit back, and relax while you are here.

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