| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem where a closing circuit is necessary to be installed in each circuit so that a scale of hardware is increased, when accident detecting function and cooperation of the number of closing loads and closing time of each circuit are constituted in single equipment, therefore a problem does not occur when the number of circuits is little, however, it is difficult to ensure the mounting space of an input converter for taking in system quantity of electricity of circuit unit, when the number of circuits is increased. SOLUTION: Out of functions which are assigned to host equipment 10 in the conventional case, function for detecting a condition of load closing is assigned to the host equipment 10, load closing function is assigned to a control terminal 11 of a circuit unit, and both of them are coupled with each other by using a transmission line N, thereby delivering data. |
