PC 104 replaces PLCgreenspun.com : LUSENET : Elevator Problem Discussion : One Thread
I was asked to develop a software to replace the existing PLC ladder diagram in a small-medium elevator system. Now, I don't know how to begin the project. Can anybody help me or can anybody introduce me some references. Anything you do will be appreciated.
Thank you very much
-- Xu Rong (email@example.com), January 25, 1998