MITSUBISHI ELECTRIC GT25 Human Computer Interface Application Guide

2.4 GOT Drive - Debugging and Monitoring of Servo Amplifier

GT25 has advanced connection function with Mitsubishi MR-J4 and MR-JE series servo amplifiers. Through the GOT Drive function, engineers can directly complete the following tasks on the HMI:

Parameter settings: Read/write servo parameters, backup parameter set.

Trial operation: jog, positioning operation, automatic tuning.

Status monitoring: Real time display of position, speed, torque, and alarm codes.

Waveform diagnosis: Collect servo operation waveforms to assist in analyzing faults such as oscillation and overshoot.

Engineering value:

No need to use dedicated MR Configurator software or PC, most debugging can be completed through HMI alone.

Significantly reduce startup and maintenance time.

On site operators can easily view the servo alarm content and quickly reset.

2.5 Dual USB ports and extended storage

GT25 is equipped with two USB interfaces (one Host and one Device):

USB Host (Type A): Used to connect a USB mouse, keyboard, barcode scanner, RFID card reader, or USB flash drive. It can achieve data log export, engineering file update, and batch import of formulas.

USB Device (Mini-B): Used to connect to a PC to transfer engineering files or expand communication through a USB to serial adapter.

Memory capacity: 32MB ROM (user engineering storage), 80MB RAM (runtime). It is recommended to control the size of engineering files within 80% of the ROM capacity to ensure performance.

Key points for hardware installation and communication configuration

3.1 Installation environment requirements

Working temperature: 0~55 ℃, storage temperature: -20~60 ℃.

Humidity: 10%~90% RH (without condensation).

Protection level: front panel IP67F (only for front installation), back IP20.

Avoid direct sunlight, corrosive gases, and strong electromagnetic interference sources.

3.2 Power Wiring

Supply voltage: 24V DC (-15%~+20%), ripple ≤ 200mV p-p.

Power consumption: Depending on the backlight brightness and expansion unit, the typical value is about 15W.

It is recommended to use an isolated power supply and separate it from devices such as frequency converters for power supply.

3.3 Construction of Communication Network

GT25 supports the following interfaces (depending on the specific model):

Ethernet: used for communication with PLC (MELSEC iQ-R/Q/L/F), GOT Mobile, MES database.

Serial port (RS-232/422/485): Connect Mitsubishi FX series PLC or third-party devices (such as temperature controllers, frequency converters).

CC Link IE Field Fundamentals: Optional.

Multi protocol simultaneous communication: GT25 can simultaneously serve as:

Exchange data with the main PLC (such as Q series) through Ethernet.

Connect to the barcode scanner via USB Host.

Directly connected to the upper database through MES interface.

Wireless option: After installing the GT25-WLAN wireless module, it can connect to the network through Wi Fi, avoiding difficulties in on-site wiring. Suggest using WPA2-PSK encryption.

Suggestions for engineering development and graphic design

4.1 Software Development: GT Works3

Supports all GOT2000 series, including GT25.

Built in rich graphics library, script (GT SoftGOT), recipe, alarm, trend chart functions.

Support simulation operation, testing logic without the need for an actual HMI.

4.2 Performance Optimization Techniques

Avoid using too many high-resolution images or animations, as they may affect the refresh rate.

Place data with low frequency of change (such as device parameters) on different pages to reduce backend communication load.

Manage large amounts of product data using indirect addressing and recipe functionality.

4.3 Security Settings

Password protection: Different levels can be set (operator, engineer, administrator).

Prohibit upload function: Protect project files from illegal copying.

Anti tampering log: records critical operations (such as parameter modification, system startup, etc.).

Maintenance and Troubleshooting Practice

5.1 Daily inspection items

Whether the touch screen response is accurate (calibration can be performed).

Whether the backlight brightness is uniform (the lifespan of LED backlight is about 50000 hours).

Is there any abnormal noise from the fan (if configured).

Is the communication indicator light flashing normally.

5.2 Common Fault Phenomena and Countermeasures

Possible causes and solutions for the fault phenomenon

The screen is not displaying, the power LED is not lit, and there is a power failure or wiring error. Measure the 24V input voltage and check the polarity and fuse.

Touch failure, surface contamination or calibration loss in a certain area. Clean the screen and enter the system menu to recalibrate.

The project is unable to download USB drivers or the GT Works3 version does not match the installation of Mitsubishi USB drivers. Please confirm that the project version is ≤ HMI firmware version.

GOT Mobile is unable to access due to incorrect IP address settings or firewall blockage. Check HMI network parameters and try ping test. Open port 80.

MES database write failed due to SQL syntax error or insufficient permissions. Test SQL statements in GT Works3 and check database user permissions.