| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a module implementation type control device capable of optionally expanding nodes for increasing IO modules without changing the slot address of a backboard. <P>SOLUTION: In a module implementation type control device, in which one CPU module and a plurality of IO modules are mounted on a first backboard bus managed by slot addresses and which is provided with a first node calling and communicating with an IO module assigned by the slot address of a CMD frame transmitted from the CPU module to the first backboard bus, an N-th relay module mounted on an N-th backboard bus communicating with a first relay module mounted on the first backboard bus via a relay bus has a circuit which disposes the communication signals of received CMD frames to an original order and checks the CRC code of the CMD frame, and when the CRC code agrees, the N-th relay module recognizes that the CMD frame is communication from the CPU module to its own node. <P>COPYRIGHT: (C)2013,JPO&INPIT |
