| 摘要 |
<p>A remote input/output device (1) has a plurality of connectors (CN) to be connected to input/output equipments (12) and is capable of performing transmission and reception, between the remote input/output device and a program controller (3) of the input/output equipments (12), of the input/output data to and from the input/output equipments (12), wherein it is arranged that two input/output points can be connected to each connector (CN), and that each input/output point is switchable between input and output points by an internal jumper switch. According to this arrangement, input/output points can be freely switched between input and output according to the number of input and output points. Thus, a single remote input/output device can serve for a necessary number of input/output points, allowing it to keep the man-hours of work and equipments-purchasing cost from increasing.</p> |
