搜索
西门子OB块的作用OB1(FreeCycle)顺序扫描OB10～OB17（Time-Of-DayInterrupt）时间-日期中断OB20～OB23（Time-DelayInterrupt）时间延迟中断OB30～OB38（CyclicInterrupt）周期性中断OB40～OB47（HardwareInterrupt）硬件中断OB55（StatusInterrupt）状态中断OB56（UpdateInterrupt）升级中断OB57（ManufacturerInterrupt）厂商专用中断OB61～OB64(SynchronousCycleInterrupt)异步周期中断OB70（I/ORedundancyError）I/O冗余错误OB72（CPURedundancyError）CPU冗余错误OB73(CommunicationError)通信错误OB80(TimeError)时间错误OB81(PowerSupplyError)电源错误OB82(DiagnosticInterrupt)诊断中断OB83(Insert/RemoveInterrupt)插/拔中断OB84(CPUHardwareFault)CPU硬件错误OB85(PriorityClassError)优先级错误OB86(RackFailure)机架错误OB87(CommunicationError)通信错误OB88(ProcessingInterrupt)过程错误OB90(BackgroundOB)背景OBOB100(WarmRestart)暖启动OB101(HotRestart)热启动OB102(ColdRestart冷启动OB121(ProgrammingError)编程错误OB122(I/OAccessError)I/O存储错误注：OB55,OB56,OB57,OB61,OB62,OB63,OB64,OB81,OB84,OB87,OB88,OB90是NOP（空操作）用户不需要用户不需要修改调用空操作的程序。