Sequence control system

Claim 1

A sequence control system comprising: an output port means including a plurality of output ports to maintain and send out a binary control signal during each operation step of an article to be controlled, said article being connected to said output ports, and an output port selector means for manually selecting each of said output ports; an input port means including a plurality of input ports each receiving a binary detected signal fed back from a detector means provided on mechanical gearing of said article to be controlled; an output data memory means for storing a condition of each of said output ports in each of said operation steps of said article to be controlled in order to said operation steps; an input data memory means for storing a condition of said binary detected signal fed back to said input port means on the condition of establishment of each of said operation steps; a memory management means for controlling said output and input memory means and for designating a memory address for each of said output and input memory means; a timer means for storing both real time calculation data and manual setting time data as step maintenance time data in said input memory means in both a teaching and a storing mode; and a data comparator means for comparing various information stored in said input data memory means during both said teaching and storing modes with the feed back signal data momentarily supplied as the real time data to said input port means and with real time data from said timer means so as to read out and select said memory addresses of said output and input data memory means by said memory management means when said compared data are consistent with each other and to supply to an instruction signal to said output port means for sending out the read out data from said output data memory means whereby a sequence control is directly taught.