| 摘要 |
PURPOSE:To use all input and output units, by converting addresses from a controller to be monitored, in which the 1st address is used for other objective addresses. CONSTITUTION:N sets of input and output unit sections 1-N of a controller to be monitored have M sets of input and output units 0-M-1 respectively, and all the input and output units are provided with a series of continuous addresses. A monitor controller (not shown) uses the 1st address designating input and output units normally as the address for a failure detection data for example, and the 2nd and succeeding addresses are used for the designation of the input and output units. An address conversion circuit 14 performs conversion shifting such addresses obtained through an MODEM 10 and a parallel serial conversion circuit 11 by one address and designates all the input and output units 1-0- N-(M-1) via the bus 13. The information from each input and output unit is inverted for the address and transmitted to the monitor controller. |
