GT2103-PMBD is a compact 3.7-inch monochrome LCD touchscreen Human Machine Interface from Mitsubishi Electric’s GOT2000 series, designed for space-constrained machine control panels requiring essential operator interface functions — status display, parameter entry, and alarm monitoring — in a minimal front-panel footprint. The GT2103-PMBD operates on 24 V DC, communicates via RS-422/485 serial or USB, and is configured using GT Designer3 software, maintaining full compatibility with the GOT2000 project development environment while targeting cost-sensitive and compact machine designs. Atlantech Drives holds stock of the GT2103-PMBD. Contact us for fast worldwide delivery and competitive pricing.
What Is the GT2103-PMBD?
The GT2103-PMBD is the entry-level compact terminal in the GOT2000 series. The part number structure follows the GOT2000 convention: «GT21» identifies the compact GOT2000 sub-series, «03» indicates the 3.7-inch display size, «P» denotes the monochrome panel type, «M» specifies the monochrome LCD display, «B» indicates black bezel, and «D» identifies the communication interface configuration (RS-422/485 + USB). Unlike the GT2512-STBA, the GT2103-PMBD does not include a built-in Ethernet port — communication is limited to RS-422/485 serial (direct connection to Mitsubishi FX, Q, iQ-F, or iQ-R series PLCs via serial cable) and USB for programming only. Despite its compact size and monochrome display, the GT2103-PMBD supports up to 500 screens, 3,200 internal devices, and the full GT Designer3 object library for text display, numeric input, lamp, switch, alarm, and simple trend objects — providing a functionally capable HMI solution for small machines where colour graphics and Ethernet connectivity are not required.
Key Technical Specifications
- Display Size: 3.7-inch monochrome LCD (STN)
- Resolution: 320 × 96 pixels
- Display Colours: Monochrome (black on white/white on black, selectable)
- Backlight: LED (rated life: 50,000 hours)
- Touchscreen Type: Analog resistive (4-wire)
- User Memory: 5 MB (project storage)
- Built-in Interfaces: RS-422/485 (mini DIN 8-pin), USB-B (device/programming only)
- No built-in Ethernet port
- SD Card Slot: Not included
- Power Supply: 24 V DC (20.4–26.4 V DC), approx. 4 W
- Panel Cutout: 119 × 88 mm
- IP Rating: IP67 (front panel), IP2X (rear)
- Operating Temperature: 0 °C to 55 °C
- Weight: Approx. 0.35 kg
Series Comparison & Selection Guide
Within the GOT2000 compact series, Mitsubishi offers the GT2103-PMBD (3.7-inch mono, serial only), GT2104-RTBD (4.5-inch mono, Ethernet + serial), GT2107-WTSD (7-inch colour TFT, Ethernet + serial), and GT2310-VTBA (10.4-inch colour TFT, full feature set) as the main size progression. The GT2103-PMBD is the correct choice when panel real estate is severely constrained — its 119 × 88 mm cutout is the smallest in the GOT2000 range — and when the application requires only text-based status display, numeric parameter entry, and alarm acknowledgement without graphical process mimics or data logging. For applications requiring colour display, data logging to SD card, or Ethernet connectivity to a Q-series or iQ-R CPU, the GT2107-WTSD (7-inch, colour, Ethernet) offers the next step up at a moderate cost increase and remains compact enough for most machine door panels. The GT2103-PMBD is frequently used as a parameter terminal on individual machine modules (e.g., a single servo axis adjustment panel or a feeder unit parameter display) while a larger colour GOT terminal serves as the main machine HMI — the smaller terminal connects directly to the axis amplifier or sub-PLC via RS-422, operating as an independent local interface without requiring network infrastructure.
Troubleshooting Guide
The most common field issues with the GT2103-PMBD relate to serial communication failures, display contrast degradation, and touch calibration drift. For serial communication failures between the GT2103-PMBD and an FX or Q-series PLC, verify that the RS-422 cable wiring matches the pinout in the GT2103 Connection Manual (SH-081196) exactly — the mini DIN 8-pin connector on the HMI side is non-standard and the pin assignment differs from the 9-pin D-sub used on larger GOT terminals; using a generic RS-422 cable without consulting the pinout diagram is the leading cause of no-communication faults on first installation. If the display shows correct screens but all touch inputs are unresponsive, perform a touch panel calibration from the GOT utility menu (hold the top-left corner of the screen during power-up to access the utility); calibration drift is most common after the unit has been operating in high-temperature environments above 45 °C for extended periods. If the backlight dims progressively over years of operation (STN LCD backlights degrade more visibly than TFT at end of life), note that the backlight is not field-replaceable on the GT2103-PMBD — a full unit replacement is required when backlight brightness becomes operationally inadequate. For units returning a «Project Data Error» message at startup, the project memory has been corrupted, typically by a power interruption during a project download — reconnect via GT Designer3 USB and perform a full project re-download to restore normal operation.
Frequently Asked Questions
Q: Can the GT2103-PMBD connect directly to a Mitsubishi MR-J4 or MR-J3 servo amplifier for parameter monitoring?
A: Yes. The GT2103-PMBD can connect directly to MR-J4-A and MR-J3-A servo amplifiers (pulse input type with RS-422 communication port) via the RS-422 interface using the MR-J4 servo amplifier communication driver available in GT Designer3. This allows the HMI to display real-time servo parameters (speed, torque, position error) and alarm history directly from the amplifier without a PLC intermediary — a common configuration for standalone single-axis servo systems.
Q: Is the GT2103-PMBD project compatible with the GT2104 or GT2107 if an upgrade is needed later?
A: Yes, with minor adjustments. GT Designer3 projects are transferable between GOT2000 compact series models, but the display resolution difference (320 × 96 for GT2103 vs higher resolutions on GT2104/GT2107) means that all screens must be manually resized and repositioned after changing the target model in the project settings. GT Designer3 provides an automatic layout conversion tool that performs an initial rescaling, but engineer review of each screen is required before deployment to correct object overlap and text truncation introduced by the automated rescaling.
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