NORITAKE ITRON VFD module GU128x8T-K612C5 is a dot matrix graphic display module with blue-green LEDs as light source, brightness of 1000 cd/m², working voltage of 12V, supply current of 500 mA, working temperature of -40~85℃, storage temperature of -40~85℃, working humidity of 20~85%RH @ 25℃. The module supports multiple software commands, such as 10 software reset, 11 write mode toggle, 12 write direction toggle, 13 display switch, 14 display inversion, etc.
This manual describes the electrical, optical, and environmental specifications of the GU128x8T-K612C5 dot‑graphic VFD module, as well as the required power supply, RS‑232 interface, and physical dimensions. It also includes a complete list of software commands for controlling the display, setting address, and creating effects.
Detailed sections cover interfacing to the module, communication settings, multi‑drop addressing, macro programming, and graphical data handling. The document provides example command sequences, pin descriptions, and troubleshooting notes for developers integrating the module into their systems.
| RS232 Input Voltage Range | -24 V to +24 V |
|---|---|
| Dot Size / Pitch | 2.15 × 2.95 mm (or 2.4 × 3.2 mm) |
| Luminance | 1000 cd/m² typ. |
| Illumination Colour | Blue‑Green (505 nm) |
| Operating Temperature | -40 °C to +85 °C |
| Operating Humidity | 20 % to 85 % RH @ 25 °C |
| Body Height | 3.9 mm max |
| Mounting Hole Diameter | 3.5 mm |
The factory default baud rate is set to 9600 baud with no parity.
Up to 31 display modules can be connected to the same host.
Use the three push‑button switches on the rear of the module to set the mode to WEB.
Command 18H clears the internal 21‑character buffer.