| 摘要 |
<p>PURPOSE:To execute an operation by a few operation switches against many operations and also by the same sense as that in using a conventional separate operation switch, by displaying a name of a final control element to be operated and an operation display on the operation switch, or on its vicinity. CONSTITUTION:An operation switch itself containing a name plate, too is pro vided with a display function, and a display of a name of a final control element to be operated and its operation is executed automatically, and an operation switch provided with an indicator can be realized by using, for instance, a liquid crystal indicator and combining an illumination type push-button switch to a base. When an A-BP pre-condition 36 has been formed, a break point name is displayed on a display part of an operating device 42, and when an operator confirms it and operates the switch of the operating device, an advance permitting command 35 is outputted, and after AND to the pre-condition 35 in a computer, an A-BP on-signal 37 is outputted. When a B-BP pre-condition 46 has been formed, a name of a break point B is displayed on the display part of the operating device 42, and the previous break point display is turned off.</p> |
