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Factory Automation HMI Display Selection Guide
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Factory automation HMI displays must remain readable, serviceable and electrically compatible over long equipment lifecycles. This guide focuses on panel-level selection for PLC terminals, machine controls, production equipment and retrofit projects.
Data sources and editorial review
Updated: ยท Reviewed by: Xuhong LCD Technical Content Team
- Current industrial LCD product records on AUO-LCD
- Manufacturer model datasheets, mechanical drawings and project-specific environmental requirements required for final approval
Editorial rule: No replacement is described as drop-in compatible without drawing, pin-map and sample validation.
Factory HMI display selection matrix
| User interface format | Define diagonal size, resolution, aspect ratio, viewing distance and glove/touch requirements. |
|---|---|
| Host connection | Verify RGB/TTL, LVDS or eDP interface, connector, pinout, voltage and timing. |
| Optical requirements | Set brightness, contrast, viewing direction, surface treatment and ambient-light conditions. |
| Environment | Confirm operating/storage temperature, vibration, humidity, contamination and enclosure design. |
| Mechanical integration | Compare outline, active area, depth, mounting, cable exit and touch/cover-lens stack. |
| Lifecycle and service | Confirm production status, forecast demand, approved alternatives, incoming inspection and revision control. |
New design versus retrofit priorities
New designs can choose the controller, cable and enclosure around a qualified panel family. Retrofit projects are more constrained: connector, pin assignment, power, timing, active area and mounting often must remain compatible with the installed equipment.
Size and interface examples
- AT056TN53 V.1 supports compact legacy HMI evaluation.
- AT070TN83 V.1 is a 7-inch WVGA RGB/TTL reference.
- G150XTN06.0 is a 15-inch XGA LVDS industrial reference.
- M170ETN01.1 supports 17-inch SXGA LVDS replacement screening.
Compatibility, selection and qualification risks
Industrial temperature on a panel datasheet does not certify the complete HMI. Controller compatibility, backlight thermal load, touch operation, condensation, vibration, cable retention, EMC and enclosure sealing must be validated at equipment level.
Purchasing package for a useful recommendation
Provide the exact current model, rear-label photos, controller and cable information, target size and resolution, environment, touch requirement, quantity, delivery country, required date and whether electrical or mechanical adaptation is acceptable.
Frequently asked questions
Can a factory HMI panel be replaced by matching size and resolution?
No. Interface, pinout, voltage, timing, mechanics, backlight and touch integration must also match.
Which interface is common in factory automation HMIs?
RGB/TTL is common in compact legacy units, LVDS in many medium and larger industrial panels, and eDP in newer designs.
What should be checked for long lifecycle equipment?
Track full suffixes, production status, approved alternatives, cable drawings, controller settings and qualified samples.
What information should an RFQ include?
Include the exact model or target specification, quantity, application, environment, destination and required date.