| 摘要 |
PURPOSE:To improve the safety of a process control by classifying the touch key inputted and operated out of plural touch keys provided on the display from other key and confirming by a confirming means whether the operation of the classified touch key is true or false. CONSTITUTION:Out of touch keys 1-15 for the monitoring and control provided on a CRT 3 screen, an ON condition lights up by red, an OFF condition lights up by green, and when the ON/OFF change-over of the desired touch key, for example, 8 is executed and an operator touches a touch key 8, the input command is given through a touch key interface 4 to a CPU 1. When the CPU 1 discriminates the input of the touch key 8, the touch key 8 is flickered and classified through a CRT control part 5. When the operator watches the flickering key, the key is true and the operator touches the true key for confirming, the CPU 1 displays the system or equipment of the control object stored at a memory part 2 in accordance with the input of the key 8 to the CRT 3, and outputs the control signal through a process input output interface PIO 6 to the control signal. |
