| 摘要 |
PURPOSE:To simplify the constitution of a unit by using an auxiliary relay for state change detection and a selecting relay for selection control commonly as one relay and by operating this relay by a controlling computer. CONSTITUTION:When state change of field device 2 is detected by state change detection function 1-1 after the operation state of operation desk 4 is discriminated by controlling computer 1, a signal is sent to selection output function 1-3, and the output of device selection number selection set function 1-2 for selection control is inputted to function 1-3 to start flicker output function 1-4. The state change detection output of function 1-3 and the flicker selection output of function 1-4 are sent to selecting auxiliary relay 6 to operate relay 6. Then, the state change output is made common through relay 6 and is sent to every field device 2, and further, flicker outputs different in period generated from function 1-4 are sent to state display 7, and the output of a circuit corresponding to the state of field device 2 and the flicker output are combined and displayed. |
