产品概述
本产品外形采用DB-9/DB-9 通用转接插头，其中，T/R+、T/R-代表收发Ａ+、Ｂ-，VCC代表备用电源输入， GND 代表公共地线。点到点、点到多点、半双工通信接两根线(T/R+、T/R-)， 接线原则“发/收+”接对方的“发/收+”、“发/收-”接对方的“发/收-”。
RS-485 半双工模式接线时，将T/R+（发/收+）接对方的A+、T/R-，（发/收-）接对方的B-。
注：本产品有全国产化型号可选
Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.
