| 摘要 |
PURPOSE:To enable to assign the same frequency to a transmission and reception circuit, by providing transmission data lines and reception data lines in separation, in a multi-frequency data bus provided amoung a control device main body and a plurality of process controllers. CONSTITUTION:A control device main body 1 is connected to an address line AL, reception data line RL, and transmission data line TL of a data bus DB, an operation controller 2 is connected to the lines AL, RL, TL, and process controllers 3a, 3b are connected to the lines AL, TL, and AL, RL respectively. For example, the device 3a outputs a process data to the line TL and a device key address to the line AL. The main body 1 makes operation processing based on the process data and the result is outputted to the line RL. The device 3b is received from the lines AL, RL for a specified operation. The device 2 also receives from the lines AL, RL for the operation instructed by the main body 1. In this case, the device 2 makes transmission of an answer back data to the main body 1 via the line TL. |
