| 摘要 |
<p>PURPOSE:To realize the system initial set control with which the disturbance of the system operation can be prevented and the restart of the system operation can be facilitated. CONSTITUTION:With press of the initial set switch, the initial set command enters FF20 via line 100 to release the set state of FF21 and 22. Figures 31-33 are timing pulses, and pulse 31 is generated first. Thus the initial set interruption signal is sent to unit 1 to stop its operation, and unit 1 sets 21. Then with generation of pulse 32, the initial set signal and the initial set interruption signal are sent to unit 1 and 2 each. After this, unit 2 sets 22. Then pulse 33 is generated to sent the initial set signal to unit 2 for execution of the initial set operation. If no end signal is delivered from unit 1 to stop the operation, alarm 41 is produced. At the same time, the power source is switched on the deliver the initial set command through line 102, and the forced setting is carried out through line 101.</p> |
