QT240N/G (2 serial ports and 1 network port 4G)-Fornitore globale

13th Floor, Building I1, Zhongjian Optics Valley Star, No. 799 Gaoxin Avenue, Donghu High tech Zone, Wuhan City

QT240N/G Series User Manual

1、 Product Overview

QT240N/G is a high-performance 32-bit MPU embedded computer based on the Reduced Instruction Set (RISC) architecture. This CPU is a system level single-chip with ARM9 as the core, supporting frequencies up to 300MHz. The system provides RS485/RS232 communication, wired network communication, and full network 4G communication. It has the characteristics of small size, low power consumption, and high efficiency, and is suitable for power concentrators, communication management, industrial control, gateways, and other occasions.

2、 Product Features

1. Hardware characteristics

NUC970 CPU：

32-bit ARM9 architecture, with a main frequency of 300MHz

Memory:

Built in 64Mbyte DDR2

FLASH：

128Mbyte NANDFlash

Encryption:

Support PRNG/DES/3DES/AES/SHA/HMAC encryption, up to 256 bit encryption mode

watchdog:

Built in WDT, overflow time less than 60 seconds, supports idle wake-up and power down wake-up

RTC:

High precision real-time clock with built-in power supply battery

Debugging port (built-in, not open to users):

One serial port is the system console port. Baud rate: 115200, data bits: 8, stop bit: 1, checksum: none, flow control: none

RS485：

2-channel independent RS485 communication, internal fully isolated protection design

Wired network:

1-channel 10M/100M adaptive industrial Ethernet, standard RJ45 interface

15KV TVS protection, internal fully isolated protection design

wireless network:

LTE Cat 4 wireless module designed specifically for M2M and IoT applications

Comprehensive coverage of various network standards

1 SIM card interface, 1 antenna interface

Transmission speed: reaching the standard speed for the corresponding function

SD CARD：

Built in SD/MMC card interface

power supply

Input voltage: DC9-36V

Single machine power consumption:<5W

mechanical properties

Metal material of shell

Size: 120MM * 90MM * 30MM

working environment

Working temperature: -40 ℃~+85 ℃

Working humidity: 5%~95%

2. Software Features

2.1 System Characteristics

QT240N/G comes pre installed with a Linux operating system based on NUC970, version 3.10. x. It meets POSIX standards or UNIX like platform applications. For system specific hardware devices, the kernel provides a simple and easy-to-use driver interface that can accelerate user application development.

The software system of QT240N/G system is divided into three parts, namely Bootloader, Linux kernel, and rootfs. Bootloader is an open source project that complies with GPL terms. UBoot mainly boots the kernel and supports NFS mounting and NAND Flash boot; The Linux kernel is the bottom layer of the entire operating system, responsible for driving the entire hardware and providing various core functions required by the system; Rootfs is a method and data structure used to clarify files on a disk or partition, that is, a method of organizing files on a disk.

2.2 Environmental Configuration

2.3 Management machine login

IP： eth0：192.168.1.177

Username: root

Password: root

3、 Interface definition

1. Power interface VIN

2. Reset interface

3. Network interface

4. SIM card interface

5. 4G antenna interface

6. RS485 interface

7. LED indicator light

8. Label identification

4、 Frequently Asked Questions

1. Forgot the IP address that has been set:

You can use the RST button to restore the factory default IP address

2. The project cannot be downloaded:

A. First, check if there are any other folders in the project folder. If so, remove them and try again;

B. Next, check if the computer's IP is set in the same network segment as the device.

3. After successful download, the main program or driver cannot run:

A. Select the correct device model and try checking the option to update the main program;

B. Next, check if the driver version is correct.

4. Unable to connect to the internet after using a normal SIM card:

Firstly, ensure that the card is loaded in a power-off state;

Return the card and lay it flat again;

5. After running for a few minutes, the wireless connected device drops:

Firstly, check if the SIM card can access the external network. If it is a dedicated network card, please contact us;

If you can access the external network, please contact the SIM card supplier to obtain the APN and reset it. Go to QTOUCH ->Real time Database ->Set APN.

After running for a long time, the wireless connected device drops:

First, confirm if the SIM card data has been used up.

If the self inspection cannot solve the problem, please contact our application support engineer for assistance.