Description
使该定时器清零，说明这一对象的运行程序正常；否则，属运行不正常，发出报警信号或停机信号。监控程序的梯形图如图7所示。图7中定时器T1为检测元件，X001为控制对象动作信号，X002为动作完成信号，M2为报警或停机信号。假设被控对象的运行程序完成一次循环需要50s，
Xantech 6.4″ Smartpad LCD Video Touchpanel – SPLCD64VW
LSI Logic MegaRAID 320-X2-128 SCSI Controller Card
Anchor PA-2500W Portable PA System w/ Built-in Wireless
Galil DMC-1780 ISA Optima Motion Controller Board
