| 摘要 |
PURPOSE:To enable to have function of counter even though it is a sequence controller having merely a function of logical operation necessary for testing input and output elements in stored program system sequence controller. CONSTITUTION:A sequence control is constituted of a memory 15 memorizing sequence programs, a program counter reading out sequence programs sequentially, an output selector 17 selecting input and output units 11, 12 and a counter 13 by means of address data in the read out sequence programs and an operation process unit 18 executing the sequence programs. Said counter unit 13 is constituted of an addressable latch 20 accomodating eight (8) sets of flip-flop, a counter 21, a setting device 22, a comparator 23 and an indicating device 24 and thus the desired function of counter is planned to be achieved by this constitution. |
