Modbus Protocol Reference Guide - M-System
1Modbus Protocol Reference GuideEM-5650 Protocol Reference GuideContents1. Introduction ........................................ ........................................ ................. 42. Modbus Protocol ........................................ ........................................ ........ Description ........................................ ........................................ ..................................... Message Framing ........................................ ........................................ .......................... 5ASCII Framing ........................................ ........................................ ....................................... 5RTU Framing ........................................ ........................................ ........................................ .. 5Address Field.
EM-5650 Rev.10 Modbus Protocol Reference Guide 5 2.2 Modbus Message Framing ASCII Framing In ASCII mode, messages start with a ‘colon’ ( : ) character (ASCII 0x3A), and end with a ‘carriage return – line feed’ (CRLF)
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