Product Overview

The Schneider Electric HMIGTO4310 is a 7.5-inch operator terminal in the Harmony GTO series, intended for machine control systems that need a larger viewing area for process information, alarms, and operator commands. Its 640 × 480 pixel VGA color display offers a different screen layout from the 7-inch WVGA HMIGTO3510. The square-format VGA resolution can be useful for applications built around existing graphical screens, equipment diagrams, and structured status pages.

Consider a production machine with several operating states, alarm conditions, and adjustable parameters. The HMIGTO4310 can present these items through configured HMI screens, allowing operators to check equipment status, acknowledge alarms, and change authorized settings without accessing the PLC programming environment. Its resistive touchscreen supports direct interaction, while the multicolor status LED gives a quick indication of the terminal’s operating condition.

The terminal supports Ethernet, RS-232C, and RS-485 communication. This allows it to connect to a compatible PLC over an Ethernet network while retaining serial interfaces for other supported equipment. The actual communication arrangement depends on the controller, selected protocol drivers, wiring, and application configuration. For a retrofit, confirming these details is more important than matching the display alone.

The HMIGTO4310 uses Vijeo Designer for HMI application development. Its 96 MB Flash EPROM application memory supports the configured project, and 512 KB of battery-backed SRAM is available for data backup. An SD card interface and USB ports support compatible storage, transfer, and service workflows.

When evaluating this terminal for an existing machine, engineers should review the HMI project, PLC communication drivers, network configuration, serial connections, and screen layout. Its 7.5-inch display is useful when operators need a larger visual workspace, while the 640 × 480 resolution should be considered when adapting screens originally developed for another display format.

Technical Specifications

Product Features

• 7.5-inch VGA display: Provides 640 × 480 resolution for equipment diagrams, operating values, alarm lists, and configured graphical screens.
• Resistive touchscreen: Supports direct selection of application controls and navigation between HMI screens.
• Ethernet connectivity: Supports 10BASE-T/100BASE-TX communication with compatible controllers.
• RS-232C and RS-485 interfaces: Accommodates supported serial communication arrangements alongside Ethernet.
• 96 MB Flash EPROM: Stores the configured HMI application.
• 512 KB backup SRAM: Retains supported data through the internal battery-backed memory arrangement.
• SD card support: Accepts compatible SD and SDHC cards up to 32 GB for supported storage and transfer procedures.
• Vijeo Designer compatibility: Supports screen development, controller communication configuration, and alarm setup.
• Multicolor status LED: Indicates the terminal’s operating state.
• Natural convection cooling: Uses passive air circulation rather than a forced-air cooling fan.

Working Principle

The HMIGTO4310 functions as the operator interface between personnel and a PLC-based control system. Its HMI runtime executes the configured application, presents process information on the display, and processes operator input through the touchscreen.

A typical communication path is:

PLC or Machine Controller → Ethernet / Serial Communication → HMIGTO4310 → Touchscreen → Operator

During operation, the terminal exchanges data with the controller through a configured communication driver. The HMI application uses that data to display machine status, process values, alarms, and operating instructions. When an operator touches a configured control, the application sends the corresponding request to the controller through the selected communication interface.

Ethernet supports network communication over 10BASE-T/100BASE-TX. This is useful when the HMI and PLC are connected to the same industrial network. The controller’s supported protocol, IP configuration, and HMI driver must be correctly configured before data exchange can take place.

The serial interfaces serve equipment that uses RS-232C or RS-485. COM1 uses a 9-pin D-Sub connector for RS-232C, while COM2 uses an RJ45 connector for RS-485. The correct interface and wiring arrangement must match the connected device. A physical connection alone does not guarantee communication if the protocol and serial parameters are inconsistent.

Vijeo Designer defines the terminal’s screens, data objects, alarm behavior, and operator actions. The SD card and USB interfaces can support applicable project-transfer and service procedures, depending on the selected workflow.

The HMIGTO4310 does not execute the machine’s main control logic. The PLC remains responsible for sequencing, interlocks, and control outputs. The terminal provides the local visual interface through which operators monitor the process and submit authorized commands.

Role in an Industrial HMI Architecture

The HMIGTO4310 occupies the operator-interface layer of an automation system. It presents selected controller data in a graphical format and sends operator requests back through the configured communication channel.

PLC / Machine Controller → Ethernet or Serial Network → HMIGTO4310 → Operator

Industrial Applications

Installation and Maintenance

1. Verify the terminal model: Confirm that HMIGTO4310 matches the required display format, communication interfaces, and application configuration.
2. Check the panel cutout: Confirm the mounting opening and installation clearances against the applicable drawings before preparing the enclosure.
3. Confirm the DC supply: Use a compatible 24 V DC supply within the specified 19.2–28.8 V range.
4. Inspect the mounting gasket: Ensure the mounting surface is clean and the gasket is correctly seated to maintain the specified front-panel protection.
5. Configure Ethernet: Check the cable, IP address, subnet settings, and controller communication parameters before testing network communication.
6. Verify serial connections: Confirm whether COM1 or COM2 is required and check connector assignments, wiring, and electrical interface compatibility.
7. Review the HMI project: Verify the Vijeo Designer project version, target terminal, communication drivers, and screen configuration before transferring the application.
8. Check removable storage: Use a compatible SD or SDHC card within the supported capacity and confirm that the required files are accessible before performing a transfer.
9. Inspect USB peripherals: Confirm that attached devices are supported and that the selected interface matches the intended service task.
10. Test touchscreen response: Check screen navigation, data entry, alarm acknowledgement, and all configured operator controls.
11. Validate controller communication: Confirm that process values update correctly and that authorized commands reach the intended controller.
12. Record commissioning settings: Document the project version, network settings, serial configuration, memory-card procedure, and test results for future maintenance.

Compatible System Components

Recommended Related Models

Key Advantages

• Provides a 7.5-inch color touchscreen with 640 × 480 VGA resolution.
• Combines Ethernet connectivity with RS-232C and RS-485 serial interfaces.
• Supports Vijeo Designer application development.
• Includes SD card and USB interfaces for supported service and storage tasks.
• Uses natural convection cooling.
• Provides IP65 and NEMA 4X indoor-use front-panel protection under specified installation conditions.

Technical FAQs

How does the HMIGTO4310 differ from the HMIGTO3510?

The HMIGTO4310 has a 7.5-inch display with 640 × 480 VGA resolution, while the HMIGTO3510 uses a 7-inch display with 800 × 480 WVGA resolution. The HMIGTO4310 offers a larger diagonal display and a different screen aspect ratio, so existing HMI screens may need layout adjustments when moving between these models.

Which communication ports are available on the HMIGTO4310?

The terminal supports Ethernet over an RJ45 10BASE-T/100BASE-TX interface, RS-232C through COM1, and RS-485 through COM2. The appropriate connection depends on the controller interface and supported protocol. Verify the project driver and communication parameters before commissioning.

What is the role of the battery-backed SRAM?

The HMIGTO4310 has 512 KB of battery-backed SRAM for supported data backup. The battery condition should be monitored, and replacement should follow the applicable maintenance procedure when a low-battery indication appears. The HMI application and its data-retention settings determine which information is stored in backup memory.

Can the HMIGTO4310 replace another Harmony GTO terminal without modifying the HMI project?

Not in every case. Even when the replacement terminal supports the same communication interfaces, display resolution, screen proportions, project version, and controller drivers can affect compatibility. Review the original application and test screen rendering and communication before returning the machine to service.