描述
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。
RELIANCE ELECTRIC T18R1101F-YL USPP T18R1101FYL
RELIANCE ELECTRIC T18R1102N-VQ USPP T18R1102NVQ
Reliance Electric RPM III 7.5HP DC Motor T18R1301U
RELIANCE ELECTRIC 805401-1S USPP 8054011S
0-51828 RELIANCE ELECTRIC NDIA CARD 051828
RELIANCE ELECTRIC 29422-V USPP 29422V
RELIANCE ELECTRIC 0-52837 USPP 052837
Reliance Electric Flexpak 3000 DC Drive 25/50 HP
RELIANCE ELECTRIC 0-52855 NSFP 052855
