CONTROLLER FOR UNIT

摘要

PROBLEM TO BE SOLVED: To provide a controller which can execute maintenance and inspection without stopping the operation of a unit. SOLUTION: A signal line 22 wired in a unit, a control box 9 connected to the signal line 22, a switch element 28 which is connected to the signal line 22 and controls the operation of fitted parts and the DC power source 23 of the switch element 28 are installed. The switch means 28 is provided with a switch means, a storage means holding a self-ID code, a transmission/reception means transferring data with the control box 9 through the signal line 22 and a switch element side control means controlling the switch means based on data from the transmission/reception means. The switch element side control means holds the state of detached time when the control box 9 is detached from the signal line 22.