Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Modbus has become a factory standard communication protocol and is now a commonly available means of connecting industrial electronic devices. Here is the chinese version.

Filename	Size	Update
MODBUS通讯协议中文版.pdf	1138138	2017-11-08

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