The RS-485 bus is widely used in various fields such as video surveillance, access control intercom, and building alarms due to its simple wiring and reliable stability. However, many problems arise during the wiring process of the RS-485 bus due to various inaccurate concepts. Here, we clarify some common misconceptions. 1 485 signal lines can … Read more
This article is a guide. The advantages of the RS-485 bus are well-known, and to ensure stable communication, isolated RS-485 modules are used for signal isolation. However, during actual RS-485 networking, one may encounter communication failures, errors, or even damaged RS-485 transceivers. What causes these issues? This article will deeply analyze the problems associated with … Read more
Click the blue text above Follow us! For over twenty years, RS-485 has been an extremely common wired communication interface in industrial applications. The balanced differential signal transmission characteristics of RS-485 can suppress common-mode noise and enable long-distance communication in noisy industrial environments. As a result, RS-485 has become a common communication port in most … Read more
RS-485 (RS232 to RS485) bus interface, as an electrical specification for multipoint and differential data transmission, has become one of the most widely used standard communication interfaces in the industry. The RS-485 standard specifies only the electrical characteristics of the interface and does not involve connectors, cables, or protocols, allowing users to establish their own … Read more
Both CAN communication and RS-485 communication are commonly used communication methods in the field of industrial automation. However, the choice of communication method varies depending on the application scenarios. Therefore, selecting the appropriate communication method is one of the key factors that determine whether a product gains market acceptance. CAN Communication The CAN protocol, after … Read more
Click the blue text above Follow us! Do you want to learn about RS-485 transceiver design tutorials?This article provides some answers based on common questions from the TI E2E™ community, which will be a very useful resource if you want to learn more about this communication standard. 1. When is RS-485 bus termination needed, and … Read more
Telemetry technology is a relatively old concept in the field of communication. As early as the last century, sensors had the capability to transmit signals over long distances, enabling scientists to monitor terminal machines and other activities remotely. Today, with the aid of computer processors, machines can receive data from sensors and other machines and … Read more
The previous two articles discussed the basic decomposition process of the MQTT protocol. This chapter mainly discusses the implementation of specific messages. Since the message handling specifications are quite similar, we will introduce the Connect and Publish messages, which are relatively complex in the MQTT protocol. Understanding the protocol analysis of these two messages will … Read more
》》PROFIBUS DP to Modbus/TCP Gateway Operation Guide Abstract： This article takes the NT100-RE-DP gateway as an example to implement communication between Modbus/TCP Client and PROFIBUS DP devices, thereby integrating PROFIBUS DP slave devices into the Modbus/TCP network. The following will gradually demonstrate the configuration steps of this gateway, which are similar for other models in … Read more
*Follow to receive 2798 PLC wireless communication cases* The PROFIBUS bus is a purple shielded twisted pair cable, with the two cores being red and green. When connecting to the bus connector, the wiring must be done according to color, generally A1 and A2 are green, while B1 and B2 are red. 2. Devices on … Read more