| 摘要 |
PURPOSE:To reduce the cost and to increase the reliability, by comparing a selection signal with the content set at a control system set circuit, and switching the pulse output and continuous output with a control output switching circuit according to the result of this comparison. CONSTITUTION:A selecting control signal 9 from a control station is received at a reception circuit 10, to pick up a selection signal 11 and a control signal 12. In a selection signal distribution circuit 13, an arbitrary selecting relay 17 is driven with the selection signal 11 to make input/output contact, open/output contact, and stop/ output contact. On the other hand, the control signal 12 of a constant mark code is decoded at a constant mark decoder 14 and either one of start/open/stop pulse signal is outputted from a control output switching circuit 30 via a timer circuit 15. The selection signal output 11 of said reception circuit 10 is compared with the content preset at a control system set circuit 28 at a comparison circuit 29, and if it is a continuous output, the pulse signal outputted from a timer 15 is locked to output a continuous signal. |
