Industrial 8-Channel Digital Input & Output Module (Modbus RTU)
We have ✅ 2 available of the WS-26244 in our Sydney warehouse. An extra 100 units will be available shortly.
The Industrial 8-Channel Digital Input & Output Module is an RS485-controlled module designed for industrial automation. It supports the Modbus RTU protocol, providing 8 isolated digital inputs and 8 open-drain outputs. Featuring multiple protection circuits, including power isolation, magnetic isolation, TVS diode, and resettable fuse, this module ensures stable and reliable performance. The rail-mount design makes it easy to install and stack for expanded applications.
Features
- Reliable RS485 Communication: Supports Modbus RTU with configurable addresses (1-255) and cascading capability.
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Multi-Layer Protection:
- Power isolation for stable voltage without additional power requirements.
- Magnetic isolation for signal reliability and interference resistance.
- TVS diode and resettable fuse for surge, over-voltage, and ESD protection.
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Versatile Digital Input & Output:
- 8 digital inputs (5-36V, passive/active, NPN/PNP) with optocoupler isolation.
- 8 open-drain digital outputs with Darlington transistors, supporting up to 500mA sinking current per channel.
- Supports DI/DO linkage and toggle control.
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Flexible Output Functions:
- Flash-on/flash-off functionality allows timed output control.
- Built-in flyback diode protection for extended reliability.
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Industrial-Grade Design:
- Wide voltage input (7-36V DC).
- Rail-mount ABS enclosure for easy installation and stacking.
- LED indicators for input/output status, MCU operation, and RS485 communication.
Specifications
- Power Supply: 7-36V DC
- Communication Interface: RS485
- Baud Rate Options: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 (default: 9600, N, 8, 1)
- Digital Inputs: 8 (5-36V, passive/active, NPN or PNP, optocoupler-isolated)
- Digital Outputs: 8 (5-36V, open-drain, max 500mA per channel)
- Modbus RTU Protocol: Standard implementation
- RS485 Address Range: 1-255
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Indicators:
- STA: MCU status
- TXD: Transmit data
- RXD: Receive data
- LEDs: Input/output status indicators
Setup & Testing
- Driver Installation: Install FTDI-based drivers for Windows, Linux, or Mac.
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RS485 Testing:
- Connect A-A, B-B.
- Use SSCOM or Modbus Poll to send Modbus RTU commands.
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Compatible with:
- Raspberry Pi (via RS485 CAN HAT, Python control)
- STM32 (via RS485 CAN Shield, C control)
- Arduino (via RS485 CAN Shield, Arduino IDE)
Applications
- Industrial automation
- Smart home control
- Remote monitoring and data acquisition
- Relay and actuator control
Resources & Support
- Software: SSCOM, Modbus Poll, SecureCRT
- Example Code: Python, C, Arduino
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FAQs:
- Works with Windows, Mac, Linux, and Android.
- DI/DO linkage can be controlled via Modbus commands.
- Ensure correct wiring for RS485 communication stability.
For more details, visit the official support page or check the development documentation at Wiki.
The Industrial 8-Channel Digital Input & Output Module (Modbus RTU) appears in the following collections:
SKU WS-26244
by Waveshare
