LS-B, VS-B, Tracer Series Controller Communication Instruction

Understanding Modbus Communication

Modbus is a widely adopted application layer protocol that operates at the 7th layer of the OSI model. It facilitates client/server communication between various network equipment, enabling request/response interactions and providing essential function codes for data exchange.

Controller Series and Protocol Features

This instruction manual pertains to the LS-B, VS-B, Tracer-B, Tracer-A, iTracer, and eTracer series controllers. The communication protocol employed by these devices is the standard Modbus-RTU protocol, offering several key characteristics:

• Standard Modbus-RTU protocol compliance.
• Default controller ID is "1", with the option to modify it via PC software or the MT50 LCD unit.
• Serial communication parameters are set to baud rate 115200, 8 data bits, 1 stop bit, and no data flow control.
• Register addresses utilize hexadecimal format with a base address offset of 0x00.
• 32-bit data is represented using two 16-bit registers (Low and High).

Document Overview

This document details the Modbus communication capabilities of the EPEVER controller series. It includes comprehensive information on real-time data monitoring, battery and load parameter configurations, device status analysis, pin definitions for RS485 and RS232 interfaces, and practical communication examples to guide users in integrating these controllers into their systems.