描述
X系列PLC通讯方式控制变频器的方法：它只需在PLC主机上安装一块RS-485通讯板或挂接一块RS-485通讯模块；在PLC的面板下嵌入一块造价仅仅数百元的“功能扩展存储盒”，编写4条极其简单的PLC梯形图指令，即可实现8台变频器参数的读取、写入、各种运行的监视和控制，通讯距离可达50m或500m
Ferraz Shawmut W236919A PC84UD90V30CP99 900V 3000A FUSE
Agilent HP RTL Pesticide Library G2081-60001 G2081AA
PFEIFFER Vacuum Pump DUO 2.5 Agilent G3170-80026 230VAC
New ABB ABB800 RDCU-02C Controller Board
Lot 2200 SMSC KBC1098-NU chips $0.5/pc Date:0915 NEW
Lot 2500 Vishay VSSR2401472G Thin film resistor 0.44/pc
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