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、数据传送速度等也要考虑。
Leybold WSU250 Vacuum Pump, Parts Pump
Leybold Turbo Drive S TDS RS485
Leybold Heraeus Quick Test
LEYBOLD QUADREX 100 SCU 901-200-G6 MASS FILTER CONTROL
with Probe and cables.
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Leybold turbo pump controller model 200-29-941
LEYBOLD 307285 2002 SYSTEM CONTROLLER
Leybold Varianten Poppet Valve Great Condition
LEYBOLD DIGITAL RATEMETER 86 79 41 NE-RD 10
LEYBOLD QT 100 TEST SNIFFER
Leybold Trivac D2A Vacuum Pump Rotary Vane Dual Stage
Leybold NW 40 vacuum pump outlet filter
