Description
不论是就地组件还是总线接口，一旦其地址标识错误，必然造成通信网络紊乱，所以，要防止各组件的地址标识错误，防止人为的误动、误改。系统扩展时，一般应在系统停止运行时进行。尤其是采用令牌式通信方式的系统，任何增加或减少组建的工作都必须在系统停运时，将组态情况向网络发布，以避免引起不可预料的后果。
Remanufactured Nash SC-7 Vacuum Pump Complete Skid
Edwards BOC iL70N Dry Semiconductor Vacuum Pump
Body for Nash 1256C liquid ring compressor, SS
Busch WV-1000 Reconditioned to O.E.M. Specs
1 Year Warranty Included
Busch RA0400 Vacuum Pump, Reconditioned to OEM specs.
1 Year Warranty Included
SIEMENS VACUUM PUMP, 20 HP, S/S
New Spencer turbine Vacuum
Knoll VRF 150/750 Vacuum Rotations Coolant Pump Filter
