| 摘要 |
PURPOSE:To designate only an optional plant device out of a computer and to control the device, by transmitting the output mask signal from the computer and closing only the desired one of the switches of an output data signal line. CONSTITUTION:The operation of each of plant devices 3 and 4 which are controlled by a computer 1 is controlled by a latching relay 5. In addition such relay 5, an output data signal line 6 is provided to transmit the output data signal from the computer 1 in order to control the relay 5. A switch 10 is inserted to each line 6. Furthermore the output mask signal is transmitted from the computer 1 and only the desired one of the switches 10 is closed by a means 9. And another means is added to gather plural pieces of line with addition of a group address and to send the output data signal to plural lines 6 from the computer 1 with the group address. |
