| 摘要 |
<p>PURPOSE:To constitute a line system inexpensively and rapidly by forming a terminal control part and a control module each of which consists of communication processing part or the like and connecting terminals provided with protocol converters to the terminal control part and the control module. CONSTITUTION:A line system control device 1 is constituted of a control module 19 and terminal control part 21 and the communication processing part 23 in the module 19 executes data communication with another control device 3 and a keyboard 11 and data communication with the communication control part 31 in the control part 21. The processing part 31 is connected to protocol converters PCL1-PCLn connected to respective terminals T1-Tn to execute data communication with respective terminals T1-Tn. Namely, the protocol converting function of each terminal itself can be omitted and it is unnecessary to restrict the kind of a connecting machine by making the converters PCL1-PCLn execute protocol conversion with the control device 1. Consequently, the line system can be constituted inexpensively, rapidly and easily.</p> |
