A network control program function that presents an interruption to indicate that a predetermined period of time has elapsed without the occurrence of an expected event. 一種網(wǎng)絡(luò )控制程序中的操作程序,可以發(fā)出一個(gè)中斷,表明預定的時(shí)間周期已被用完,但沒(méi)有發(fā)生期望的事件。