Overview: 4G module (data transfer module) is widely used in remote power monitoring, hydrological monitoring of water resources, geological disaster monitoring and warning flash floods, environmental pollution monitoring, weather data collection, forest fire monitoring, industrial remote data acquisition / transmission and other fields. Without any wiring, you can solve the problem of field data transmission for you. description: The 4G module is a 7-mode full use Netcom module for embedded wireless data transmission terminal, domestic support for all three major network operators, small size, simple interface, users can easily integrate into their own motherboard devices up. Supports many complex network protocols such as PPP, TCP, UDP, ICMP, and multiple SOCKET interface standards, providing users with a full transparent data transmission mode. Supports custom heartbeat packets, registration packets, data leader packages, support for cloud computing, users do not need to set up servers, fully supports industrial configuration applications, users do not need to care about complex network protocols, through the transparent serial port, you can conduct wireless data Send and receive, let your device access the Internet anytime, anywhere. Sample display: Module appearance description Function and characteristics description: > Automatically analyze and process various situations, maintain always-on status, and provide a stable and reliable network transmission channel > Grasp the key core technology, using the special TCP/IP protocol stack software of the public, unique window mechanism makes the data Transmissive channel is more stable and efficient > Provide online online mode for always online, idle when idle, standby when idle, etc. > Support multi-master and multi-standby data centers, and can automatically switch to the corresponding standby center when a failure occurs > Support TCP Client, UDP Master Mode and TCP-ZSD, UDP-ZSD Mode > Using the SDK of the mountain, the upper computer development is simpler, can not establish the center of one's own too quickly without TCP programming > Support local, remote parameter configuration and remote firmware upgrade > Support custom registration package, heartbeat package, data package leader package, user-friendly data confirmation > Comprehensive support for industrial configuration applications, OPC Server, virtual serial port support > Fully support the public cloud port, users do not need to build their own server > Support mobile phone web real-time viewing device operating status > Provide TTL serial communication, baud rate from 300bps to 115200bps optional, start/stop bits/parity check optional > Small product size, 56mm × 45mm × 13mm, more suitable for embedded system integration > Provide SIM card interface, user can design and place SIM card Hardware Development Guide Main pin definition (for ZSD2XX0 pcb package (PTOREL/DXP/AD) can be found at Public Hill Technology Co., Ltd.) Hardware reference design 1, power supply The power supply range of the DTU is 3.6V~7V, and the maximum peak current can reach 2A@5V. Therefore, when designing the DTU power supply circuit, DCDC is recommended. Switching power supply solutions, commonly used DCDC chip LM2596-5V, MP2303D, etc. If it is a lithium battery powered system, it can be powered directly by the battery. 2, serial port The 4G module provides a TTL level interface to the user's host connection. The TTL level voltage is 3.3V. If the customer's TTL level is 5V, only the client host's RXD needs to be handled simply to be compatible The reference design is as follows: Reset circuit: The 4G module provides a reset pin for the user to use, pull the pin low, DTU reset and restart Reset circuit, it is recommended that customers use OC circuit design: Shutdown function introduction In order to minimize power consumption, the ZSD2410 series embedded DTU provides users with a shutdown function. After the module is turned off (PD), it consumes only about 500uA. This function is ideal for users who actively report power consumption requirements. ZSD2410 module provides the user with a shutdown IO port (pin PD), the user can use the PD pin gates with an open collector output is connected, as shown below: Secondary development of data collection center The 4G module automatically dials into the 4G/3G/2G network and automatically establishes a data connection channel with the center. The serial port is completely transparent to the user. Ming, can be seen as the user's serial port directly connected with the data acquisition center, the user's machine serial port transceiver is user-defined Raw data. Provided the data center The second development package under IOT Cloud Mode: Zhongshan Wulian Cloud SDK Secondary Development Interface The secondary development package in the traditional DTU mode: ZSDXXXX DTU Easy ActiveX control. It has the following features: 1. The secondary development interface implements 2G/3G/4G DTU. In transparent transmission mode and user control mode, the data acquisition center should With the underlying data communications and device management capabilities. It is a standard ActiveX control under Windows and is suitable for A variety of development tools are integrated under the Windows platform for the development of transparent transmission mode data collection centers. 2. All interfaces provided by the secondary development interface are asynchronous, and the container program returns immediately after calling the function. 3. The secondary development interface contains a DTU device pair internally. The control automatically maintains and updates the DTU devices in the DTU device list. Status information. DTU-based data transceiver operations must be based on the presence of the DTU device list and are online DTU to carry out.
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