Regardless of whether it is an on-site component or a bus interface,once the address identification is wrong,the communication network will inevitably be disordered.Therefore,it is necessary to prevent the address identification of each component from being wrong,and prevent human misoperation and incorrect modification.When the system is expanded,it should generally be carried out when the system stops running.Especially for the system that adopts the token communication method,any work of increasing or decreasing the composition must be released to the network when the system is out of operation,so as to avoid unforeseen consequences.
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。
MALLORY CGS251T350R3C CAPACITOR (250 MFD,350VDC) IN
ALLEN BRADLEY CAT# 1771-IAD (120 AC/DC INPUT)
FENWAL THERMOSWITCH 67100-1 (220) IN BOX
GE FANUC IC69MDL645D ,24 VDC 16PT POS/NEG LOGIC
NULINE AC SQUARE FAN (04424834) 4.7X4 .7X1.5 (230V)
CINCINNATI MILACRON 3-531-3855A INPUT MODULE REV-B GOOD
CINCINNATI MILACRON 3-531-3839A OUTPUT MODULE REV-C GOO
