N310 Modbus Communication Protocol Manual

N310 Modbus communication protocol, introduces communication data structure, hardware installation, data frame, CMS, LRC LRC CHECK etc.

N310 Modbus Communication Protocol Manual - cover page
Brand
N310
Category
Motor
Document type
Programming Manual
Language
Chinese
Pages
18
File format
PDF
File size
274 KB
Published
21 March, 2012
Updated
30 September, 2023
MD5 checksum
3CCE49DC9DBF59590174D5293974DB7B
PDF
N310 Modbus Communication Protocol Manual PDF

About this manual

The N310 series uses RS‑485 or RS‑232 interfaces to communicate with a host controller via Modbus RTU or Modbus ASCII. The document defines the data frame structure, address mapping, function codes, and error handling for both modes.

It also lists the register map for control and monitoring, including command bits for start/stop, direction, frequency set‑points, and status bits for alarms and faults. CRC and LRC checksum calculations are provided for reliable data transmission. This manual is written in Chinese.

What's inside

  • Communication Data Structure
  • Hardware Installation
  • ASCII Mode Frame Format
  • RTU Mode Frame Format
  • Communication Addressing
  • Function Codes
  • Checksum (LRC & CRC) Definitions
  • Error Codes
  • Variable‑Frequency Drive Control Registers
  • Register Read/Write Procedures

Specifications

Maximum data frame length80 bits
Maximum device address32 (0x20)
Minimum interval between command and response10 ms

Frequently asked questions

What is the maximum length of a Modbus data frame for the N310?

The data frame can be up to 80 bits long.

How many device addresses can be used with the N310?

Addresses range from 00H (broadcast) up to 20H, allowing up to 32 devices.

What is the required time gap between a command and its response?

A minimum interval of 10 ms must be maintained.

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