Mitsubishi HMI GT15 Series GT1555-QTBD

5.7″ 320x240pixels (QVGA)，Resistive Touchscreen，RS-232C，GT Designer3，Supply Voltage 24V DC，IP67，MELSEC Protocol, 9MBytes, 18W

Manufacturer	Mitsubishi
Part Number	GT1555-QTBD
Product Type	HMI

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Overview

GT1555-QTBD is equipped with a 5.7-inch TFT color LCD screen with a resolution of 320×240 (QVGA), supports 65536 colors, and has a clear display. It adopts a matrix resistive touch screen with a minimum button size of 16×16 points, adapting to the precise operation requirements of industrial sites.

GT1555-QTBD adopts embedded installation method, with body size of 167mm×135mm×56mm and weight of 1.1kg (excluding installation accessories); the front protection level reaches IP67, which is suitable for complex industrial environments.

FAQ:

1.What communication protocols does GT1555-QTBD support?

GT1555-QTBD mainly supports RS-232/RS-422/485 serial protocol and USB transmission protocol.
The serial protocol is adapted to the communication and networking of PLC and industrial equipment, and USB is used for uploading and downloading engineering data; the Ethernet protocol can be additionally supported through the expansion module to meet the needs of remote monitoring.

2.What is the serial protocol communication distance of Mitsubishi GT1555-QTBD?

The serial protocol communication distance of GT1555-QTBD follows its adapted RS-232 and RS-422 universal standards, as follows:
RS-232: The standard maximum communication distance is 15 meters. This distance can ensure stable basic data transmission. If it is exceeded, problems such as signal attenuation and communication distortion may occur.
RS-422: When the transmission rate is lower than 100kb/s, the maximum communication distance can reach 1200 meters; the higher the transmission rate, the shorter the effective distance.

3.How to ensure the stability of GT1555-QTBD serial communication?

To ensure the stability of GT1555-QTBD serial communication, the core must do four things:

Use shielded wires, limit the communication distance according to the agreement, and keep the wiring away from strong electromagnetic equipment;
Unify the baud rate, parity bit and other parameters with the docking device, and connect the RS-422 correctly;
The cable shielding layer is grounded at one end, the equipment is reliably grounded, and a terminal resistor is added in strong interference scenarios;
Avoid harsh environments and regularly check joints to prevent loosening and oxidation.