M1M Power Meter Modbus Communication Protocol Guide

This document provides a comprehensive communication protocol guide for M1M Power Meters, detailing Modbus-RTU and Modbus-TCP/IP transport formats, frame structures, and mapping tables. It covers features such as energy, real-time data, average/maximum/minimum values, power quantities, I/O, device information, time/date, transformer ratios, communication settings, and tariff configuration.