Transcription of Modbus Protocol Reference Guide - M-System
{{id}} {{{paragraph}}}
1 Modbus Protocol Reference GuideEM-5650 Protocol Reference GuideContents1. Introduction .. 42. Modbus Protocol .. Description .. Message Framing .. 5 ASCII Framing .. 5 RTU Framing .. 5 Address Field .. 5 Function Field .. 5 Data Field .. 5 Error Checking Field .. 6 LRC Checking .. 6 CRC Checking .. Modbus Function Formats .. 7 Data Address .. 7 Coil .. 7 Input Status .. 7 Input Register .. 7 Holding Register .. Contents in Modbus Messages ..83. Modbus Function Codes .. Coil Status (01) .. Input Status (02) .. Holding Register (03).
EM-5650 Rev.10 Modbus Protocol Reference Guide 4 1. Introduction The Modbus protocol is provided by Modicon Inc. (AEG Schneider Automation International S.A.S.), originally developed for Modicon programmable controllers. Detailed information is described in Modicon Modbus Protocol Reference Guide (PI-MBUS-300 Rev. J).
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document:
{{id}} {{{paragraph}}}