STATE DISPLAY TERMINAL FOR REMOTE SUPERVISORY AND CONTROL SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a state display terminal for a remote supervisory and control system by which diversified displays are attained even with small power supplied through a signal line. SOLUTION: A power supply circuit 12 uses power supplied from a transmission controller through a signal line Ls to form an internal power supply. A signal processing section 10 supervises the operating state of a terminal being a supervisory object by means of a transmission signal, and a display element 5a displays the operating state of the terminal. An organic EL element that is of an electric field drive type is employed for the display element 15a and a required luminance can be obtained with low power consumption.