描述
当用PLC进行网络设计时,其难度比PLC单机控制大得多。首先你应选用自己较熟悉的机型,对其基本指令和功能指令有较深入的了解,并且指令的执行速度和用户程序存储容量也应仔细了解。否则,不能适应你的实时要求,造成系统崩溃。另外,对通信接口、通信协议
NVIDIA MAC GEFORCE GTX 285 GRAPHICS CARD
^ Pacific-Atlantic PT-55 HV Pulse/trigger Generator
AMERICAN SURGICAL C22T51 19″ ADJUSTABE SURGICAL LIGHT
Standard Register Image Seal 608
PERKIN ELMER 8410 CAPILLARY GAS CHROMATOGRAPH
* 15+ BESELER EG&G NEGATIVE CARRIERS
LEO WAFER T LTA-130A SYSTEM
BARRACUDA NETWORKS SPAM & VIRUS FIREWALL 300
BUNN SINGLE B SATELLITE BREWER SERVER COFFEE MAKER
XEROX 6250 TONER SET- BLACK-CYAN-MAGENTA-YELLOW
TEKTRONIX PROGRAMMABLE PULSE HEAD 015-0611-00 / CG5011