8-Channel Modbus RTU Analog Output Module – 12-bit DA Conversion, RS485, Industrial Isolation (Waveshare)

SKU: 8-Ch Analog Output Module

Industrial standard 8-channel Analog output expansion module, using Modbus RTU protocol over RS485. Ideal solution for automation systems requiring high accuracy and stability.

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- Output: 8 simultaneous channels (Option for voltage version 0-10V or current 0-20mA).
- Resolution: 12-bit DA Conversion for smooth output data.
- Communication: RS485, supports Modbus RTU Protocol.
- Power supply: Wide range DC 7~36V (Compatible with industrial power).
- Safety protection: Power and signal isolation (Dual Isolation), TVS lightning protection.
- Design: Standard 35mm Rail-mount housing, easy installation in electrical cabinets.
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General Introduction

Modbus RTU Analog Output 8CH Module is a specialized industrial device that expands analog control capabilities for PLCs, HMIs, or industrial PCs. The device supports simultaneous analog signal output (Current or Voltage) across 8 channels with high accuracy thanks to its 12-bit DA converter.

Tổng quan Module Analog Output 8 kênh Waveshare — Actual image of the industrial-grade 8-channel Analog Output Module

Key Features

1. Industrial Grade & High Reliability

The module is integrated with multi-level protection circuits for durable operation:

Dual Isolation: Power isolation and signal magnetic isolation ensure stable system operation in high-noise industrial environments.
Comprehensive Protection: Built-in resettable fuse and TVS (Transient Voltage Suppressor) provide effective protection against lightning, ESD, overcurrent, and overvoltage.
Watchdog: Automatic monitoring prevents the module from freezing during continuous operation.

Sơ đồ bảo vệ cách ly công nghiệp — Integrated multi-layer protection ensures stable operation in harsh environments

2. Interface and Connectivity

The device supports easy monitoring and control through a logically arranged layout of connection ports.

Giao diện kết nối module — Connection ports and status indicators on the module

3. Detailed Wiring Diagrams and Applications

Supports flexible connection with various devices and easy configuration via Modbus RTU.

Sơ đồ đấu nối nguồn và RS485 — Pinout diagram for power supply and RS485 communication

Chi tiết các chân tín hiệu — Detailed explanation of signal pins on the module

Sơ đồ ứng dụng thực tế — Illustration of connection with peripheral devices

Cấu hình hệ thống — Control system connection diagram

Chi tiết kỹ thuật bổ sung — Component details and circuit design

4. Optimized Design for Electrical Cabinets

Rail-mount enclosure design (35mm DIN rail mounting), easy to install and neatly stackable inside electrical cabinets.
Wide power supply range of 7~36V DC ensures compatibility with most existing industrial power supplies (12V, 24V).

Thiết kế gắn Rail-mount — Supports standard 35mm DIN rail mounting

Detailed Technical Specifications

Communication Interface	RS485
Protocol	Standard Modbus RTU
Baud Rate	4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 bps
Default Format	9600, N, 8, 1
Power Supply	DC 7~36V (Recommended power supply >15V)
DA Resolution	12-bit
Output Range (Current Version)	0~20mA (Accuracy ±0.03mA, 1μA)
Output Range (Voltage Version)	0~10V (Accuracy ±0.01V, 1mV)
Mounting	Din-rail 35mm