IS220PDIAH1A GE

Due to the lack of effective diagnostic tests in ordinary PLC systems,it is difficult to judge whether there are potential faults such as short circuits and open circuits inside the system.To maintain its availability and reliability,emergency stop(system)must rely on comprehensive testing and diagnostics.Therefore,ordinary PLCs cannot be used in emergency stop(system),and PLCs used in emergency stop(system)must be certified for safety.

普通的PLC系统由于缺乏有效的诊断测试，很难判断系统内部是否短路、断路等潜在的故障。紧急停车（系统）要维持其可用性和可靠性，必须依靠全面的测试和诊断，因此，普通的PLC是不能用在紧急停车（系统），在紧急停车（系统）中使用的PLC必需经过安全认证。