The Industrial 8-Channel Digital Input & Output Module is a top - notch RS485 - controlled device tailored for industrial automation. It adheres to the Modbus RTU protocol, offering 8 isolated digital inputs and 8 open - drain outputs. With multiple protection circuits like power isolation, magnetic isolation, TVS diodes, and resettable fuses, this module guarantees stable and reliable performance. The rail - mount design simplifies installation and stacking for expanded applications.
**Features**
- **Reliable RS485 Communication**: It supports Modbus RTU with configurable addresses from 1 to 255 and can be cascaded easily.
- **Multi - Layer Protection**: Power isolation ensures stable voltage without extra power needs. Magnetic isolation enhances signal reliability and resists interference. TVS diodes and resettable fuses protect against surges, over - voltage, and ESD.
- **Versatile Digital Input & Output**: There are 8 digital inputs (5 - 36V, passive/active, NPN/PNP) with optocoupler isolation and 8 open - drain digital outputs with Darlington transistors, supporting up to 500mA sinking current per channel. It also supports DI/DO linkage and toggle control.
- **Flexible Output Functions**: The flash - on/flash - off feature enables timed output control, and the built - in flyback diode protection increases reliability.
- **Industrial - Grade Design**: It has a wide voltage input of 7 - 36V DC. The rail - mount ABS enclosure makes installation and stacking a breeze, and LED indicators show 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
- **Indicators**: STA for MCU status, TXD for transmit data, RXD for receive data, and LEDs for input/output status.
**Setup & Testing**
- Install FTDI - based drivers for Windows, Linux, or Mac.
- For RS485 testing, connect A - A, B - B and use SSCOM or Modbus Poll to send Modbus RTU commands.
- It's compatible with Raspberry Pi (via RS485 CAN HAT, Python control), STM32 (via RS485 CAN Shield, C control), and 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
- FAQs: Works with Windows, Mac, Linux, and Android. DI/DO linkage can be controlled via Modbus commands. Make sure to wire correctly for stable RS485 communication.
For more details, visit the official support page or check the development documentation at Wiki.
Using this industrial 8 - channel digital input and output module is straightforward. First, install the FTDI - based drivers on your Windows, Linux, or Mac system. When setting up the RS485 connection, connect A to A and B to B. You can use software like SSCOM or Modbus Poll to send Modbus RTU commands for testing.
This module is compatible with Raspberry Pi, STM32, and Arduino. For Raspberry Pi, use the RS485 CAN HAT and Python for control. With STM32, employ the RS485 CAN Shield and C for control, and for Arduino, use the RS485 CAN Shield and Arduino IDE.
When it comes to precautions, make sure to wire the RS485 connection correctly to ensure stable communication. Also, since the module supports different operating systems like Windows, Mac, Linux, and Android, double - check your system settings before use.
For maintenance, the module has multiple protection circuits, but it's still a good idea to keep it in a dry and clean environment. Check the LED indicators regularly to monitor the input/output status, MCU operation, and RS485 communication. If you notice any abnormal indicator behavior, it might signal an issue that needs further inspection.
