Implemental mode and bus extended mode null of terminal resistance of common

摘要

PURPOSE:To prevent mis-setting at the time of annexation by mounting a terminate resistance on a back panel where a common is wired, and performing connection and disconnection of the common bus with/from terminate resistance through fitting and removal of a short connector. CONSTITUTION:In a device with the basic part used solely, a fitting/removal side connector 2b is fitted in a receptacle connector 2a and used. Thereby terminate resistances 1a, 1b are connected with the two ends of a common bus 4. At the time of annexation the fitting/removal connector 2b is drawn out, and receptacle connectors 10b, 11b of a connection cable 9 are fitted the receptacle connectors 10a, 11a at the annexation part and the basic part. Thereby the common bus 4 is connected with its mating annex bus 8, and the resistance 1b is removed, and the terminate resistances 1a, 1c will be connected at the two ends of the connected common bus. Thus connection/disconnection of the resistance 1b can be set only by fitting and removal of a short connector 2, which prevents mis-setting.