The GT1455-QLBDE is Mitsubishi Electric’s 5.7-inch TFT colour touch screen human-machine interface (HMI) panel from the GOT1000 GT14 series — a compact QVGA (320 × 240 pixel) colour touch screen operator terminal providing graphic display and touch-input control for machine operators communicating with connected MELSEC-Q, MELSEC FX, and other compatible PLC systems via built-in RS-422 and Ethernet connectivity. The GT1455-QLBDE is available through Atlantech Drives — quote within 24-48 hours, worldwide express shipping, 12-month warranty.
What Is the GT1455-QLBDE?
The GT1455-QLBDE is a GOT1000 GT14 series graphic operator terminal (GOT) providing a 5.7-inch TFT colour LCD display with resistive touch screen, QVGA resolution (320 × 240 pixels), and built-in communication interfaces for connecting to Mitsubishi and compatible PLC controllers. The model designation encodes the key specifications: «GT14» identifies the GOT1000 GT14 compact series; «55» indicates the 5.7-inch display size; «Q» identifies the Mitsubishi MELSEC-Q compatible communication protocol; «L» indicates the LED backlight type; «BD» identifies the built-in communication option (Ethernet + RS-422 dual interface in the GT1455-QLBDE); and «E» indicates the CE marking and European market version. The GT1455-QLBDE connects to MELSEC-Q CPU modules via Ethernet (using the QJ71E71-100 Ethernet module or built-in Ethernet on Q03UDECPU and higher) for high-speed display data refresh, or via RS-422 for direct serial connection to MELSEC-Q and MELSEC FX series PLCs without an Ethernet module. GT Designer3 software (Windows-based, free download from Mitsubishi) provides the screen design environment for creating operator screens with numeric displays, trend charts, alarm lists, recipe data entry, and touch button controls linked to PLC device addresses. The GT1455-QLBDE’s built-in CF card slot enables external screen data storage, data logging to CSV files, and recipe data management — extending the panel’s data handling capability beyond the built-in flash memory.
Key Technical Specifications
- Model: GT1455-QLBDE
- Display: 5.7-inch TFT colour LCD, QVGA (320 × 240 pixels)
- Colours: 65,536 colours (16-bit)
- Touch Screen: Resistive (analog)
- Backlight: LED (long life, no lamp replacement)
- Built-in Communication: Ethernet 100BASE-TX (RJ45), RS-422 (9-pin D-Sub)
- Compatible PLCs: MELSEC-Q, MELSEC iQ-R, MELSEC FX, MELSEC-A, plus third-party PLCs via protocol options
- Screen Memory: Built-in flash ROM (8 MB)
- External Memory: CF card slot (CompactFlash, not included)
- Power Supply: 24 VDC (20.4–27.6 VDC)
- Power Consumption: Approx. 14 W
- Protection Rating: Front panel IP67, rear IP2X
- Operating Temperature: 0°C to 50°C
- Dimensions (W × H × D): 194 mm × 147 mm × 52 mm (front panel)
- Panel Cutout: 185 mm × 138 mm
- Weight: Approx. 0.9 kg
Architecture & Design Overview
The GT1455-QLBDE implements the GOT1000 GT14 series hardware platform — a dedicated embedded HMI controller with a proprietary operating system optimised for real-time PLC data refresh and touch screen response. The display refresh architecture uses a background data polling task that continuously reads PLC device values (D registers, M relays, Y outputs, etc.) from the connected PLC at the highest speed the communication interface allows — Ethernet connection to a Q-series Ethernet module (QJ71E71-100) achieves approximately 50–100 ms display refresh cycle for typical screen configurations, while RS-422 serial connection refreshes at approximately 100–300 ms depending on the number of PLC devices monitored. The GT1455-QLBDE’s touch screen input uses a resistive (analog) 4-wire touch panel that detects the contact point by measuring the resistance change at the touch location — resistive touch panels respond to any rigid stylus, gloved finger, or finger contact, making them suitable for machine operator use in gloved or dirty-hand environments common in manufacturing. The LED backlight in the GT1455-QLBDE provides rated service life of 50,000 hours at 25°C — approximately 5.7 years at 24/7 operation — as opposed to the cold-cathode fluorescent lamp (CCFL) backlights used in older GOT panels that required periodic lamp replacement. The built-in CF card slot in the GT1455-QLBDE enables continuous data logging to CSV files on the CF card — alarm event logs, production counts, temperature trends, and operator action logs can be recorded automatically and extracted by removing the CF card for PC-based analysis, without requiring a dedicated data historian software system for basic production data collection.
Frequently Asked Questions
Q: Can the GT1455-QLBDE connect to a MELSEC FX3U PLC directly without a separate Ethernet module?
A: Yes. The GT1455-QLBDE’s built-in RS-422 port connects directly to the FX3U base unit’s built-in RS-422 programming port (the standard mini-DIN connector) using a Mitsubishi GT-01-C□R4-6P connection cable — no separate communication module is required. The RS-422 connection provides reliable HMI communication at up to 115,200 bps, with the GOT polling the FX3U’s device data continuously for display refresh. For FX5U systems, the GT1455-QLBDE’s Ethernet port can connect to the FX5U’s built-in Ethernet port directly for higher-speed display refresh.
Q: What software is required to create screens for the GT1455-QLBDE, and is it available free of charge?
A: GT Designer3, Mitsubishi’s GOT screen design software, is required for creating and downloading screens to the GT1455-QLBDE. GT Designer3 is available as a free download from Mitsubishi’s FA library website — no paid software licence is required for basic screen design and download. GT Designer3 runs on Windows 10 and Windows 11 (64-bit) and provides a drag-and-drop object-based screen design environment with hundreds of predefined display objects (numeric displays, bar charts, alarm lists, trend graphs, touch buttons) that link directly to PLC device addresses.
Q: Is the GT1455-QLBDE front panel IP67 rated for washdown environments?
A: The GT1455-QLBDE front panel carries IP67 protection — dust-tight and resistant to temporary water immersion up to 1 metre for 30 minutes. This IP67 rating makes the GT1455-QLBDE suitable for food and beverage processing environments with regular hose-down cleaning, pharmaceutical cleanroom areas with sanitising spray cleaning, and outdoor installations with rain exposure. The IP67 rating applies only to the front panel when correctly installed in the panel cutout with the supplied gasket — the rear of the unit and the wiring connectors are rated IP2X and must be inside the control panel, protected from water and contamination.
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