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
Master-Bilt (GT-40) 49″ Horizontal Display Freezer
UNION CARBIDE LR-30A Cryo Tank Liquid Nitrogen Dewar
SPECTRA LOGIC SPECTRA 10000 TAPE DRIVE
OXFORD PROJECT NR 38015 5FT DETECTOR? SETUP?
HAMILTON BEACH 990 COMMERCIAL HEAVY DUTY FOOD BLENDER
SPECTRACE 9100-4203 X-RAY XRF SPECTROMETER controller?
FACIT TAPE PUNCH READER MODEL 4047
TEKTRONIX 7S12 TDR/SAMPLER W/S-6 / S-52 HEAD PLUG IN
NEWPORT MOTION CONTROLLER MM3000
Extron Matrix 6400 Sync Switch
