| 摘要 |
PURPOSE:To prevent a controlled system from entering into a dangerous state by providing a fault flag, an other-equipment fault falg, and an exit inhibiting flag in the working memory of each of plural programmable control machines coupled together on parallel link basis. CONSTITUTION:Two programmable control machines #1 and #2 of the same constitution are coupled together through a link bus CB and a fault signal line SB. In the working memory WM8 of each control machine 1, a fault flag F1 to be set when a fault is detected by a battery fault detector 12, a fault falg F2 to be set when a fault is detected by a temperature fault detecting circuit 13, and an other-equipment flag F3 to be set when a fault reception signal has a high level are set. Further, an output inhibiting flag FO to be set or reset in accordance with the result of optional logical arithmetic among the flags F1, F2, and F3, and optional input and output data is set in the memory 8, and thus prescribed output conditions are obtained. |
