PM861AK02

【PM861AK02】

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【PM861AK02】 【】

优先级是指多个中断事件同时发出中断请求时，CPU对中断事件响应的优先次序。S7-200规定的中断优先由高到低依次是：通信中断、I/O中断和定时中断。每类中断中不同的中断事件又有不同的优先权，如表2所示。
一个程序中总共可有128个中断。S7-200在各自的优先级组内按照先来先服务的原则为中断提供服务。在任何时刻，只能执行一个中断程序。一旦一个中断程序开始执行，则一直执行至完成。不能被另一个中断程序打断，即使是更高优先级的中断程序。中断程序执行中，新的中断请求按优先级排队等候。中断队列能保存的中断个数有限，若超出，则会产生溢出。中断队列的zui多中断个数和溢出标志位如表3所示。表2中断事件及优先级 

100-K09WD01M
100-K09WD10
100-K09WD10M
100-K09WF01
100-K09WF01M
100-K09WF10
100-K09WF10M
100-K09WJ01
100-K09WJ01M
100-K09WJ10
100-K09WJ10M
100-K09ZA01
100-K09ZA01M
100-K09ZA10
100-K09ZA10M
100-K09ZA200
100-K09ZA200M
100-K09ZA300
100-K09ZA300M
100-K09ZA400
100-K09ZA400M
100-K09ZD01
100-K09ZD01M
100-K09ZD10
100-K09ZD10M
100-K09ZD200
100-K09ZD200M
100-K09ZD300
100-K09ZD300M
100-K09ZD400
100-K09ZD400M
100-K09ZJ01
100-K09ZJ01M
100-K09ZJ10
100-K09ZJ10M
100-K09ZJ200
100-K09ZJ200M
100-K09ZJ300
100-K09ZJ300M
100-K09ZJ400
100-K09ZJ400M
100-K09ZQ01
100-K09ZQ01M
100-K09ZQ10
100-K09ZQ10M
100-K09ZQ200
100-K09ZQ200M
100-K09ZQ300
100-K09ZQ300M
100-K09ZQ400
100-K09ZQ400M
100-K09ZS01
100-K09ZS01M
100-K09ZS10
100-K09ZS10M
100-K09ZS200
100-K09ZS200M
100-K09ZS300
100-K09ZS300M
100-K09ZS400
100-K09ZS400M
100-K09ZT01
100-K09ZT01M
100-K09ZT10
100-K09ZT10M
100-K09ZT200
100-K09ZT200M
100-K09ZT300
100-K09ZT300M
100-K09ZT400
100-K09ZT400M
100-K09ZW10
100-K09ZZ01
100-K12B01
100-K12B01M
100-K12B10
100-K12B10M
100-K12B200
100-K12B200M
100-K12B300
100-K12B300M
100-K12B400
100-K12B400M
100-K12D01
100-K12D01M
100-K12D10
100-K12D10M
100-K12D200
100-K12D200M
100-K12D300
100-K12D300M
100-K12D400
100-K12D400M
100-K12DJ01
100-K12DJ01M
100-K12DJ10
100-K12DJ10M
100-K12DJ200
100-K12DJ200M
100-K12DJ300
100-K12DJ300M
100-K12DJ400
100-K12DJ400M
100-K12KA01
100-K12KA01M
100-K12KA10
100-K12KA10M
100-K12KA200
100-K12KA200M
100-K12KA300
100-K12KA300M
100-K12KA400
100-K12KA400M
100-K12KF01
100-K12KF01M
100-K12KF10
100-K12KF10M
100-K12KF200
100-K12KF200M
100-K12KF300
100-K12KF300M
100-K12KF400
100-K12KF400M
100-K12KG01
100-K12KG10
100-K12KG200
100-K12KG300
100-K12KG400
100-K12KJ01
100-K12KJ01M
100-K12KJ10
100-K12KJ10M
100-K12KJ200
100-K12KJ200M
100-K12KJ300
100-K12KJ300M
100-K12KJ400
100-K12KJ400M
100-K12KN01
100-K12KN01M
100-K12KN10
100-K12KN10M
100-K12KN200
100-K12KN200M
100-K12KN300
100-K12KN300M
100-K12KN400
100-K12KN400M
100-K12VC01
100-K12VC01M
100-K12VC10
100-K12VC10M
100-K12VC200
100-K12VC200M
100-K12VC300
100-K12VC300M
100-K12VC400
100-K12VC400M
100-K12WD01
100-K12WD01M
100-K12WD10
100-K12WD10M
100-K12WF01
100-K12WF01M
100-K12WF10
100-K12WF10M
100-K12WJ01
100-K12WJ01M
100-K12WJ10
100-K12WJ10M
100-K12ZA01
100-K12ZA01M
100-K12ZA10
100-K12ZA10M
100-K12ZD01
100-K12ZD01M
100-K12ZD10
100-K12ZD10M
100-K12ZE01
100-K12ZG400
100-K12ZJ01
100-K12ZJ01M
100-K12ZJ10
100-K12ZJ10M
100-K12ZJ200
100-K12ZJ200M
100-K12ZJ300
100-K12ZJ300M
100-K12ZJ400
100-K12ZJ400M
100-K12ZQ01
100-K12ZQ01M
100-K12ZQ10
100-K12ZQ10M
100-K12ZQ200
100-K12ZQ200M
100-K12ZQ300
100-K12ZQ300M
100-K12ZQ400
100-K12ZQ400M
100-K12ZR01
100-K12ZR10
100-K12ZS01
100-K12ZS01M
100-K12ZS10
100-K12ZS10M
100-K12ZS200
100-K12ZS200M
100-K12ZS300
100-K12ZS300M
100-K12ZS400
100-K12ZS400M
100-K12ZT01
100-K12ZT01M
100-K12ZT10
100-K12ZT10M