Autor: iot-en (page 148)

The topic of Huawei has been brought up recently, and this is also a manifestation of Huawei’s high reputation in the country. Now Huawei’s mobile phone chip supplier has been cut off by the United States. The world’s leading chip…

Company Profile Chengdu Zongheng Intelligent Control Technology Co., Ltd. is a DTU production and R&D manufacturer located in Chengdu High-tech Zone. At the same time, the company also develops and produces a series of products such as RTU, serial port…

5G is one of the hotly debated topics recently. “Autonomous driving”, “smart home” and “Internet of Everything” are all more or less related to the popularity of 5G. At this time, my country is pressing the “fast forward button” on…

Industrial IoT Gateway ZHL4921 is a multi-interface wireless gateway developed by Chengdu Zongheng Intelligent Control Technology Co., Ltd. based on QuecOpen. It is also called an industrial IoT gateway. It is developed using an embedded Linux system and has 256MB…

Detailed explanation of Modbus RTU protocol 2020-08-05 17:31: 44Zongheng Intelligent Control 5 MODBUS_RTU communication protocol MODBUS_RTU communication protocol (this agreement adopts master-slave question and answer method) PDM series meters/transmitters: PDM series meters/transmitters adopt a brand-new design, which revolutionizes the concept…

The development history of communications 2020-08-06 18:10:10Zongheng Intelligent Control 3 The development history of communications (1) The earliest communication: beacon tower, beacon; letter: electronic communication (telegraph, telephone, network signal) (2) The two most important aspects of communication are information representation…

What is serial port parallel, serial port connection 2020-08-10 18:19: 13Zongheng Intelligent Control 4 Parallel and serial interfaces (1) Serial and parallel mainly consider the number of communication lines, which is the amount of information that the sender and receiver…

What is a serial port communication protocol? There are several common ones. 2020-08-11 17:55:30 Zongheng Intelligent Control 5 What is a serial communication protocol? In layman’s terms: it is the protocol transmission method used in serial communication. The explanation in…

What is GPRS? The full name of GPRS DTU is GPRS data transmission unit. Currently, there is no specific name in China, and there is no clear agreement. Some people also call it data transmission terminal, data collection terminal, etc.…

The difference between serial port and parallel port 2020-08-13 14:12: 14Zongheng Intelligent Control 6 serial port The serial port is also called a serial port. Compared with the transmission speed of the parallel port, the transmission speed of the serial…