| 摘要 |
PURPOSE:To easily confirm disconnection by providing a resistor between a common terminal and a control power supply and forming an individual control part with a series circuit of a current move-round preventing diode and a signal output part. CONSTITUTION:A signal output device of a remote supervisory/controlling equipment contains a matrix selecting circuit 31 having a matrix 1 consisting of (m) pieces of rows and (n) pieces of columns, a row selecting means 7 including contacts X1-Xm, a drive part 4 and a signal output part 6, a column selecting means 11 including contacts Y1-Yn, a drive part 8 and a signal output part 10, a final stage output part 29, etc. Then a resistor 32 is provided between a common terminal 2 and a pole V0 at the other side of a control power supply 3 together with a resistor short-circuiting part which short-circuits the resistor 32 with a selection permitting signal 19 at a contact 20a of a relay 20. At the same time, a signal processing part 37 consists of 1st and 2nd discriminating parts 33 and 34, a gate circuit 35 and a logic circuit 36. Then the part 37 outputs an output permitting signal 27 when the resistor 32 is short-circuited while the signal 19 is delivered.
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