Sequence controller with microprocessor

摘要: A microprocessor based sequence controller is disclosed in connection with a soup and beverage vending machine, which sequences of functions required the operation machine are under control unit. The unit has two separate storage sections, one not alterable contains basic program for machine. other section adjustable modifications program. modifiable through use service module, normally connected during normal operations. start stop times each function independently modifiable, an interlock provided to assure against unintentional modification times. integrity stored automatically checked periodically, ignored if check fails.