1. Introduction
The EBYTE EID051 Series RS485 Serial Port LED Display is a robust industrial-grade digital tube display designed for various communication and monitoring applications. It supports the MODBUS RTU protocol, enabling flexible display of integers, floating-point numbers, and ASCII characters. This manual provides detailed instructions for the installation, operation, and maintenance of your EID051-133 (3 Digits 0.36 inch) display.
2. Key Features
- RS485 Communication: Supports MODBUS RTU protocol for industrial communication.
- Versatile Display: Capable of displaying integers, positive/negative numbers, decimal points, floating-point numbers, and various ASCII characters.
- Electronic Labeling: Features a power-on customized display content function, ideal for electronic labeling (e.g., "A-01", "B-02").
- Adjustable Brightness: Offers 8 phases of brightness adjustment for optimal visibility in different environments.
- Configurable Parameters: Allows modification of Modbus address (1-255), baud rate (1200bps-115200bps), and check digit.
- Power-on Customization: Set initial display content upon power-on (e.g., 0, 485 address, specified content, all segments lit).
- Blinking Function: Configurable blinking display for specific digits or the entire display, with adjustable cycle.
- Industrial-Grade Protection: Built-in switching power supply with reverse connection and overcurrent protection. Industrial-grade RS485 chip with lightning, surge, anti-static, over-voltage, and over-current protection.
- Wide Operating Temperature: Stable operation in extreme conditions from -45°C to 85°C.
- Built-in Watchdog: Ensures stable and continuous operation without crashing.
- EMC Level 3 Certification: Ports can resist 8KV electrostatic air discharge.
- Easy Installation: Designed for embedded panel mounting, requiring only square holes and no installation screws.
- Host Computer Software: Supporting software provided for testing and parameter modification.
3. Setup and Installation
Follow these steps for proper installation of your EID051 display.
3.1 Physical Installation
The EID051 display is designed for embedded panel mounting. Cut a square hole in your device panel according to the dimensions provided in the specifications section. Insert the display into the opening; it will secure itself without the need for additional screws.
Figure 3.1: Dimensions for EID051-133/134/135/143/144/145 (top) and EID051-138/148 (bottom) models. The EID051-133 (3 Digits 0.36 inch) model corresponds to the smaller unit shown at the top, with approximate dimensions of 60.3mm x 28.8mm for the front panel and 15mm depth.
3.2 Wiring
Connect the power supply and RS485 communication lines to the display's terminals. Ensure correct polarity for the power supply, as the device includes reverse connection protection. Refer to the product's pinout diagram (if available, otherwise general RS485 A/B and power +/- connections).
- Power Supply: Connect to the designated power input terminals. The device features a wide input voltage range.
- RS485 Communication: Connect the RS485 A and B lines to the corresponding terminals.
4. Operating Instructions
This section details how to configure and operate your EID051 display using the Modbus RTU protocol.
4.1 Modbus RTU Communication
The display communicates via Modbus RTU. Ensure your master device (e.g., PLC, HMI) is configured with matching communication parameters (Modbus address, baud rate, check digit).
- Modbus Address: Can be set from 1 to 255. This address identifies the display on the RS485 bus.
- Baud Rate: Supports standard rates from 1200bps to 115200bps.
- Check Digit: Configurable parity settings (e.g., None, Even, Odd).
Refer to the specific Modbus register map provided with the product documentation for details on writing data to display and configuring parameters.
4.2 Display Customization
The EID051 offers several options for customizing its display behavior.
- Brightness Adjustment: The display supports 8 levels of brightness. This can typically be adjusted via Modbus commands or potentially through the host computer software.
- Power-on Initial Display: Configure what the display shows immediately after power-up. Options include displaying '0', the device's 485 address, a specified custom content, or having all digital tube segments lit.
- Blinking Function: Activate blinking for specific digits or the entire display. The blinking cycle can be customized to user habits and site requirements.
Figure 4.1: The EID051 display offers 8 distinct brightness levels, allowing users to adjust visibility according to environmental conditions and preferences.
4.3 Host Computer Software
EBYTE provides supporting host computer software to facilitate testing, parameter modification, and restoration of factory settings. This software offers a user-friendly interface for managing the display's configurations.
5. Maintenance
The EID051 display is designed for industrial environments and requires minimal maintenance.
- Cleaning: Gently wipe the display surface with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the display or casing.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges (-45°C to 85°C).
- Firmware Updates: Check the EBYTE official website periodically for any available firmware updates that may enhance performance or add new features.
6. Troubleshooting
If you encounter issues with your EID051 display, refer to the following common troubleshooting steps.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or off. | No power, incorrect wiring, or power supply issue. | Verify power connections and supply voltage. Check for reverse polarity. |
| Incorrect or garbled display. | Modbus communication parameters mismatch, incorrect data format. | Check Modbus address, baud rate, and check digit settings on both the display and the master device. Ensure data sent is in the correct format (e.g., ASCII, integer). |
| Display not responding to commands. | Modbus address conflict, wiring issue, or master device problem. | Confirm unique Modbus address. Inspect RS485 wiring for continuity and shorts. Test with host computer software if available. |
| Display flickers or is unstable. | Power supply instability, electromagnetic interference (EMI). | Ensure stable power supply. Check for sources of EMI and consider shielding or grounding improvements. |
Figure 6.1: The EID051 series features a built-in watchdog timer to prevent system crashes and ensure stable, continuous operation, reducing the need for constant supervision.
Figure 6.2: The EID051 display is designed with EMC level 3 certification, providing robust protection against electrostatic discharge up to 8KV, enhancing reliability in industrial environments.
7. Specifications
Detailed technical specifications for the EID051-133 (3 Digits 0.36 inch) display.
| Parameter | Value |
|---|---|
| Brand | EBYTE |
| Model | EID051-133 (3 Digits 0.36 inch) |
| Communication Protocol | RS485, MODBUS RTU |
| Display Type | LED Digital Tube |
| Digit Count | 3 Digits |
| Digit Size | 0.36 inch |
| Baud Rate | 1200bps - 115200bps |
| Modbus Address Range | 1 - 255 |
| Brightness Levels | 8 phases |
| Operating Temperature | -45°C to 85°C |
| Protection Features | Reverse connection, overcurrent, lightning, surge, anti-static, over-voltage |
| EMC Certification | Level 3 (8KV electrostatic air discharge resistance) |
| Mounting | Embedded Panel Mount |
| Parcel Dimensions | 19 x 13 x 6 cm |
| Weight | 100 g |
Figure 7.1: The EID051 display is built to industrial-grade quality standards, ensuring stable operation within a wide temperature range of -45°C to 85°C, suitable for demanding environments.
8. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official EBYTE website. Contact details for customer service are typically available on the product packaging or the manufacturer's website.
