READ-ONLY SEQUENCE CONTROLLER HAVING TWO-STAGE TERMINAL BOARD CONSTITUTION

摘要

PROBLEM TO BE SOLVED: To provide a read-only sequence controller allowed to be remotely controlled from a position considerably separated from a machine. SOLUTION: Terminal boards are arranged on two stages and collected to the lower end of an output relay unit board and two-layer circuit constitution is formed by the output relay unit board and a clock pulse control unit board integrated in the output relay unit board through connectors.