Electro Industries/GaugeTech Nexus 1252/1262/1272 Meters Modbus Protocol User Manual

About this manual

This document serves as a technical reference for the Modbus Protocol User Manual version 1.29 for the Nexus 1252, 1262, and 1272 meters manufactured by Electro Industries/GaugeTech. It details the communication architecture, including function codes, CRC algorithms, and dead time settings required for integrating these meters into a Modbus network.

The manual provides an extensive register map covering device identification, real-time data, energy accumulation, harmonic analysis, time-of-use (TOU) settings, and various configuration blocks. It also defines the specific data formats (Types F1 through F19) used for transmitting voltage, current, power, and energy data over the Modbus interface.

What's inside

• Modbus Protocol Overview
• Communication Packets
• Function Codes
• CRC Algorithm
• Nexus Meter Modbus Register Map
• Real Time Block
• Energy Block
• Time of Use Settings
• Communication Data Formats
• Factory Calibration Block

Specifications

Frequently asked questions

What models does this manual cover?

This manual covers the Nexus 1252, 1262, and 1272 meters.

What is the document number?

The document number is E107708.

What function code is used to read holding registers?

Function Code 03 is used to read holding registers.