User Guide

Contents
Table of Contents
Introduction........................................................................................................................................................................4
What’s in this Modbus Interface Guide........................................................................................................................4
What’s in the Instruction Manuals...............................................................................................................................4
Other sources of information........................................................................................................................................4
Product Overview...............................................................................................................................................................5
Function.........................................................................................................................................................................5
Display............................................................................................................................................................................5
Analogue Input..............................................................................................................................................................5
Optional Alarm Outputs................................................................................................................................................5
Optional Analogue Output............................................................................................................................................5
Modbus Implementation....................................................................................................................................................6
Exclusions......................................................................................................................................................................6
Hardware........................................................................................................................................................................6
Setting the Address........................................................................................................................................................6
Reset to Defaults............................................................................................................................................................6
Supported Modbus Functions.......................................................................................................................................7
Diagnostics (Function Code 0x08)...............................................................................................................................7
Read Device Identification (Function Code 0x2B)......................................................................................................8
Modbus Register Address Map.........................................................................................................................................9
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