Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | ETOP306 |
| Manufacturer | UniOP / EXOR International |
| Product Type | Industrial Touchscreen HMI |
| Display Type | 5.7-inch TFT Color LCD |
| Resolution | 320 × 240 pixels (QVGA) |
| Display Colors | 64K colors |
| Backlight | LED |
| Touchscreen | Analog resistive touchscreen |
| User Memory | 64 MB internal Flash |
| Power Supply | 24 VDC (18–30 VDC) |
| Current Consumption | 0.55 A maximum at 24 VDC |
| Ethernet Interface | 10/100 Mbps |
| USB Interface | USB Host 1.1 |
| PLC Communication Port | RS-232 / RS-485 / RS-422 configurable |
| Programming Port | RS-232 / RS-485 / RS-422 configurable |
| Auxiliary Port | Optional fieldbus/controller modules |
| Communication Drivers | Supports more than 150 drivers |
| Alarm Capacity | 1024 alarms |
| Event List Capacity | 1024 events |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Front Protection | IP65 |
| Rear Protection | IP20 |
| Dimensions | 187 × 147 mm faceplate |
| Mounting Depth | Approx. 45 + 4 mm |
| Weight | Approx. 1 kg |
Product Introduction
UniOP ETOP306 Product Introduction
UniOP ETOP306 is a 5.7-inch industrial touchscreen HMI designed for machine visualization, operator control, and PLC communication applications. It combines a TFT color display, resistive touchscreen, Ethernet connectivity, USB interface, and serial communication ports in a compact panel format.
The UniOP ETOP306 is commonly used in legacy automation systems where maintaining the original HMI application and communication structure is important. Before replacement, engineers should verify the Designer project file, communication driver, PLC protocol, and installed firmware revision.

ETOP306
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A machine operator panel fails during production, but the PLC, drives, and field I/O remain operational. The immediate assumption is usually that the controller has failed. In many cases, the actual problem is the HMI hardware, project file, communication driver, or damaged touchscreen interface.
The HMI is the operator’s connection to the automation system. A replacement panel must match both the electrical interface and the application software environment.
Typical Applications
- Packaging Machinery – Operator control screens, recipe management, production status monitoring, and alarm display.
- Machine Tools – CNC auxiliary controls, parameter entry, and machine diagnostic screens.
- Building Automation – HVAC monitoring, equipment status visualization, and control interfaces.
- Factory Automation – PLC-based production lines requiring touchscreen operation and data display.
Technical Pitfalls to Avoid
- Verify Application Project Compatibility
The physical ETOP306 panel is only part of the system. Confirm the UniOP Designer project version, fonts, graphics, and communication drivers before commissioning. - Check Communication Parameters
RS-232, RS-485, RS-422, and Ethernet settings must match the PLC configuration. Incorrect baud rate, node address, or protocol selection can appear as an HMI hardware fault. - Consider Internal Battery Condition
The ETOP306 includes battery-backed functions such as the real-time clock. Older units may require inspection of battery condition before returning to service.
Related Products
- UniOP ETOP307
Larger 7-inch widescreen HMI from the same Series 300 family. Used where a larger display area is required while maintaining similar communication features. - UniOP ETOP308
7.5-inch HMI model with higher display resolution. Suitable for applications requiring more detailed graphics. - UniOP ETOP310
10.4-inch HMI panel designed for larger machine interfaces and more complex visualization projects. - UniOP ETOP300
Base Series 300 HMI platform. Used for similar operator interface applications with different hardware configurations. - UniOP Designer 6 Software
Engineering software used to create and maintain HMI applications, including graphics, alarms, recipes, and communication drivers. - UniOP TCM Communication Modules
Optional communication modules providing additional fieldbus connectivity for PLC and automation networks. - UniOP SCM Modules
Expansion modules providing controller functions and additional communication capabilities. - EXOR eTOP400 Series HMI
Later-generation HMI family offering updated hardware options for modernization projects.
