Understanding MQTT: A Solution for Machine Communication

Understanding MQTT: A Solution for Machine Communication

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

Detailed Implementation of MQTT Protocol Code

Detailed Implementation of MQTT Protocol Code

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

Guide to PROFIBUS DP and Modbus/TCP Network Conversion

Guide to PROFIBUS DP and Modbus/TCP Network Conversion

》》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

The Role of Termination Resistors in PROFIBUS-DP Connectors

The Role of Termination Resistors in PROFIBUS-DP Connectors

*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

Analysis and Troubleshooting of Profibus-DP Communication Failures

Analysis and Troubleshooting of Profibus-DP Communication Failures

Industrial Control Classroom Industrial Control Classroom【www.gkket.com】Essential Website for Engineers Add WeChat:gkket123 Join a 500-member WeChat group Electrical Automation – Free Materials Worth Over Ten Thousand Yuan Click to Download for Free (DownLoad) With the development of automatic control technology, the application of field bus technology in industrial control is becoming increasingly widespread. The reliability of … Read more

Performance Comparison of PROFINET and PROFIBUS

Performance Comparison of PROFINET and PROFIBUS

PROFINET and PROFIBUS are two fieldbus systems introduced by the PNO organization. There is no comparability between the two; PROFINET is based on industrial Ethernet, while PROFIBUS is based on RS485 serial bus. The protocols of the two are completely different due to the differing media, with no connection between them. However, both have excellent … Read more

How to Handle F01910 Fault in G120 Inverter with PROFIBUS DP

How to Handle F01910 Fault in G120 Inverter with PROFIBUS DP

Click the blue text “Xijia Transmission” to follow the official account! When using the CU240B-2 DP, CU240E-2 DP, CU230P-2 DP, and CU250S-2 DP control units, the inverter will trigger the F01910 fault if it does not receive a message from the PROFIBUS master station within the specified watchdog time. 1 Common Causes of Faults (1) … Read more

Testing the Anti-Interference Capability of PROFINET and PROFIBUS

Testing the Anti-Interference Capability of PROFINET and PROFIBUS

Qicheng Automation Pragmatic + Reliable automation training service provider Training Projects:PLC System Integration + Motion Control + Robotics + Machine Vision Providing professional automation project implementation and system integration services Simply put, PROFINET = PROFIBUS + Ethernet, transferring the master-slave structure of PROFIBUS to Ethernet. Therefore, PROFINET will have Controllers and Devices, and their relationship … Read more