设备正常待机中; //1->A通道工作中,B待机; //2->AB通道工作中; //3->B通道工作中,A待机; //4->A通道暂停,B待机; //5->A通道暂停,B工作; //6->AB通道暂停; //7->A通道待机,B暂停; //8->A通道工作,B暂停; //0xAA->故障. const WAIT = 0; const A_WORK = 1; const AB_WORK = 2; const B_WORK = 3; const A_PAUSE_B_WAIT = 4; const A_PAUSE_B_WORK = 5; const AB_PAUSE = 6; const A_WAIT_B_PAUSE = 7; const A_WORK_B_PAUSE = 8; }