| 摘要 |
PROBLEM TO BE SOLVED: To deal with increase and decrease of a load flexibly without the unnecessary component cost, when connecting the load with a control bus via a multifunction connector.SOLUTION: When connecting the loads 40-60, having a number of circuits exceeding the number of pins of the output connector 24 of a base module 20, with a control bus, the extension input connector 33 of an extension module 30 is connected with the extension output connector 25 of the base module 20, so that the loads 40-60 can be connected while being distributed to respective output connectors 24, 34 of the base module 20 and extension module 30. Consequently, even if a larger number of pins of the output connector 24 of a base module 20 is not preset, the total number of pins of the output connectors 24, 34 can be increased substantially corresponding to the increased loads 40-60, by connecting the extension module 30 with the base module 20 by chain reaction, when the loads 40-60 are increased. |
