The GT2104-PMBD is Mitsubishi Electric’s 4.3-inch WQVGA colour touch screen human-machine interface panel from the GOT2000 GT21 compact series — providing a 480 × 272 pixel TFT colour display with resistive touch screen and built-in RS-422/RS-485 serial communication for direct connection to MELSEC FX, MELSEC iQ-F, MELSEC-Q, and compatible PLCs in space-constrained machine panel installations where a compact HMI footprint is the primary specification requirement. In stock at Atlantech Drives. Request your quote within 24-48 hours with worldwide shipping and 12-month warranty.
What Is the GT2104-PMBD?
The GT2104-PMBD is a GOT2000 GT21 series compact graphic operator terminal (GOT) providing a 4.3-inch WQVGA TFT colour LCD (480 × 272 pixels, 65,536 colours) with resistive touch screen, 24 VDC power supply, and built-in RS-422/RS-485 serial communication port for direct PLC connection — the compact entry-level panel in the GOT2000 family, positioned for applications where panel space is the primary constraint and a simplified operator interface is adequate without the larger display area of the GT2107 (7-inch) or GT2110 (10.1-inch) models. The «GT2104» designates the GOT2000 GT21 series with 4.3-inch display; «P» identifies the plastic housing (versus metal); «M» identifies the main unit type; «B» indicates the built-in battery for clock data retention; and «D» identifies the standard communication option. The GT2104-PMBD runs GT Designer3 screens — the same GT Designer3 software used across all GOT2000 models — enabling screen projects to be scaled between GT21 compact panels and larger GT27 panels without redesign, protecting the engineering investment when upgrading to a larger display in future machine variants. The built-in serial port supports connection to Mitsubishi FX5U, FX3U, FX3G, Q-series, and iQ-R PLCs via RS-422 direct connection, as well as third-party PLC communication via available protocol options.
Key Technical Specifications
- Model: GT2104-PMBD
- Display: 4.3-inch TFT colour LCD, WQVGA (480 × 272 pixels)
- Colours: 65,536 colours (16-bit)
- Touch Screen: Resistive (analog)
- Backlight: LED (rated 50,000 hours at 25°C)
- Built-in Communication: RS-422/RS-485 serial (multi-drop capable)
- Compatible PLCs: MELSEC FX5U, FX3U, FX3G, FX3S, MELSEC-Q, iQ-R, plus third-party via protocol options
- Screen Memory: Built-in flash ROM (5 MB)
- External Memory: USB host port (USB memory for screen data and data logging)
- Battery: Built-in (clock data retention)
- Power Supply: 24 VDC (20.4–27.6 VDC)
- Power Consumption: Approx. 7 W
- Protection Rating: Front panel IP67
- Operating Temperature: 0°C to 50°C
- Dimensions (W × H × D): 127 mm × 100 mm × 47.5 mm (front panel)
- Panel Cutout: 119 mm × 92 mm
- Weight: Approx. 0.36 kg
Compatibility & System Integration
The GT2104-PMBD’s built-in RS-422/RS-485 serial port connects directly to MELSEC FX series PLCs via the FX built-in RS-422 programming port (using GT-01-C□R4-6P or equivalent GOT-to-FX connection cable) without any additional communication module on the PLC side. For MELSEC iQ-F FX5U PLCs, the GT2104-PMBD can connect via the FX5U’s built-in RS-485 port using the RS-485 communication parameter settings — enabling direct FX5U HMI connection without an Ethernet module. For MELSEC-Q systems, the GT2104-PMBD connects to the Q-series built-in RS-232C port on the CPU module or via an RS-422 adapter to the CPU’s serial port. The GT2104-PMBD also supports multi-drop serial connection — multiple GT2104-PMBD panels (up to 32 nodes on RS-485) can monitor the same PLC simultaneously on a single RS-485 bus, enabling distributed operator panels in conveyor systems, production lines, or multi-station assembly machines where multiple operator access points to the same PLC are required. For third-party PLC connection, GT Designer3 provides protocol definition files for many non-Mitsubishi PLC brands (Siemens, Allen-Bradley, Omron, Keyence, etc.) — download the appropriate protocol definition file and configure the GT2104-PMBD serial port parameters to match the target PLC’s serial communication specification. The GT2104-PMBD’s USB host port enables USB memory connection for screen data transfer (alternative to USB cable from PC), data logging to USB memory, and recipe data management.
Installation Advice
The GT2104-PMBD’s 119 mm × 92 mm panel cutout is smaller than the GT1455’s 185 mm × 138 mm cutout, enabling installation in compact panel doors, machine bezels, and pendant operator boxes where the larger GOT1000 panels cannot fit. When cutting the panel opening, maintain the minimum tolerance specified in the GT2104-PMBD instruction manual (typically +1.0/-0.0 mm per dimension) — oversized cutouts allow the GOT to shift within the opening, defeating the IP67 front gasket seal. Install the GOT with the panel locked in position using the four mounting clips provided — ensure all four clips are tightened evenly to compress the front gasket uniformly and achieve IP67 sealing. For the RS-422/RS-485 wiring to the PLC, use shielded twisted-pair cable (Belden 9842 or equivalent, 120 Ω impedance) and install 120 Ω termination resistors at both physical ends of the RS-485 bus — at the GT2104-PMBD connector and at the last PLC or device on the bus. Connect the cable shield to earth at one end only (typically at the PLC panel’s earth point) to prevent ground loops. For the GT2104-PMBD’s 24 VDC power supply wiring, use a dedicated power supply separate from the PLC’s 24 VDC I/O supply — sharing the 24 VDC supply with inductive loads (solenoid valves, relay coils) causes supply voltage spikes that can cause the GT2104-PMBD to reset or display briefly blank screens during output switching events.
Frequently Asked Questions
Q: Can the GT2104-PMBD display alarm history and log alarms to the USB memory?
A: Yes. GT Designer3’s alarm function allows configuration of alarm events linked to PLC device states (M relays, D register values exceeding thresholds) — when an alarm condition activates, the GT2104-PMBD records the alarm text, timestamp, and operator acknowledgement in the alarm history log. The alarm log can be saved to USB memory in CSV format for PC-based analysis, trend reporting, and maintenance record keeping. The built-in battery retains the alarm log data (and clock data for accurate timestamps) during power-off periods.
Q: What is the maximum number of screens that can be stored in the GT2104-PMBD’s 5 MB internal flash memory?
A: The number of screens depends on screen complexity (number of objects per screen, image files used) — a simple screen with numeric displays and touch buttons typically requires 20–50 KB of storage, while screens with background images or many complex objects require more. The 5 MB flash typically accommodates 50–200 screens depending on complexity. For projects requiring more storage, the USB host port enables external USB memory use for additional screen data and data logging beyond the internal flash capacity.
Q: Is the GT2104-PMBD backward compatible with screen projects created for the older GOT1000 GT11 or GT12 series?
A: GOT1000 screen projects cannot be directly imported into GT Designer3 for GOT2000 — the two generations use different project file formats. However, GT Designer3 includes a project conversion function that imports GOT1000 GT Designer2 projects and converts them to GOT2000 format as a starting point for GT2104-PMBD commissioning. The converted project requires review and adjustment for display resolution differences between the GOT1000 (320×240 QVGA in GT14 series) and GOT2000 GT21 (480×272 WQVGA) — object positions and sizes may require manual adjustment after conversion.
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