描述
节点总线的传送介质一般为同轴电缆，有的采用令牌信号传送方式，有的采用带冲突检测的确良多路送取争用总线信号传送方式。不论采用哪种方式，当总线的干线任一处中断时，都会导致该总线上所有站及其子设备通讯故障。
NEW HONEYWELL M740A1020 ACTUATOR MOTOR M740A-1020
COMPUMOTOR SX8-DRIVE CONTROLLER
COMPUMOTOR SX6-DRIVE CONTROLLER
ROBOTRON SERIES 400 HC16 CPU TIMER 473-0-0414-01
NEW HONEYWELL RA890F-1346 FLAME RELAY RA890F 1346 3
AMETEK GEMCO 1986B1XRX RESOLVER
NEW ALLEN BRADLEY 808-J2 SWITCH 808J2 SERIES F
NEW FUSION UV 256041 MAGNATRON KIT 554171 AND 554172
