| 摘要 |
PURPOSE:To perform process control in desired operation mode without interrupting the control, by providing a priority processing circuit which decides on operation modes in accordance with predetermined operation modes. CONSTITUTION:A priority processing circuit 31 inputs respective mode specification signals from an automatic operation specification switch 32 for a local mode and a manual operation specification switch 33. Further, an absolute manual operation switch 37 is connected to the circuit 31 and when the switch 37 is turned on by an operator, a control signal from an output terminal 21 is controlled to control a process. When the switch 33 is turned on, a signal is sent to a microprocessor 11 to control the control signal from the terminal 21 in accordance with operation conditions of increase and decrease switches 26 and 27. Further, automatic operation in local mode is carried out with the switch 32. Then, control by the operation of those switches is performed by the microprocessor 11. |
