The fixed length format, data echoplex, data sum and dual redundancy checking was adopted in data transmission to avoid the communication errors.
数据传送采用定长格式，及回送和求和双重冗余校验，以确保通信。
Lastly, the methods of software redundancy, setting present output state register unit, and setting self checking program to solve the problem of control state being out of order.
对于控制状态失常问题采用软件冗余、设置当前输出状态寄存单元和设置自检程序等对策。
Double mode redundancy structure can be used in the design. The author gives the software program diagram of fault checking.
设计中采用双模冗余结构，给出了故障检测的软件程序框图。
Double mode redundancy structure can be used in the design. The author gives the software program diagram of fault checking.
设计中采用双模冗余结构，给出了故障检测的软件程序框图。
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