Follow “Technical Training” focused on automation education for 14 years UART, I2C, RS485… These communication methods are widely used, but their explanations can be ambiguous. Therefore, I feel it is necessary to organize them for clarification and differentiation. The article is a bit long, so I suggest saving it for later reference when needed. UART … Read more
[Disclaimer] The images and text are sourced from the internet. If there is an infringement, please contact us for removal! Serial communication is a commonly used communication method in PLC networks. Choosing the correct interface type and protocol standard is crucial for ensuring communication reliability. The RS-232 interface complies with the serial data communication interface … Read more
1. RS-232-C is a serial physical interface standard established by the Electronic Industry Association (EIA) in the United States. RS is the abbreviation for “Recommended Standard,” 232 is the identification number, and C indicates the revision number. The RS-232-C bus standard has 25 signal lines, including one main channel and one auxiliary channel. In most … Read more
A few days ago, I saw discussions in my technical group about the topic of “TTL, RS232, and RS485 transmission distances“. Today, I took some time to share relevant content. Overview Many readers might not know what TTL, RS232, and RS485 are, so this section provides a brief overview of them. 1. TTL Level TTL: … Read more
Follow the IoT Planet to track the latest developments in the Internet of Things! “IoT Planet” focuses on sharing technologies and applications related to the Internet of Things. In the Internet of Things, communication lines are used to transmit data, signals, and power to establish communication links between devices. Common communication lines include USB cables, … Read more
Communication Requirements and Functions: The firmware version of V90 is V1.05 and above; V90 communicates through the RS485 interface at the top of the drive’s front panel (no additional hardware required); Pin assignment of RS485; (Pin 3 and Pin 8) Parameters can be modified, such as speed/position/torque set values via ModBus; Parameters can be monitored, … Read more
Modbus Communication Protocol History Initially, factories controlled systems through what was known as large microprocessor systems in “Distributed Control Systems” or “DCS”. A central control system managed the entire setup (in the control room). All sensors and actuators were connected to the control system via point-to-point wiring. Alternatively, they could be added in a network … Read more
Hello everyone, good evening! Beginner’s Guide to TIA Portal: MODBUS-RTU Communication Configuration Continuing from the previous article, we will explain how to use MODBUS communication commands. MODBUS communication requires three commands: ① MB_COMM_LOAD command ② MB_MASTER command (Master command) ③ MB_SLAVE command (Slave command) The communication commands are located in Communication – Communication Processor – … Read more
Consider a DC power supply with an output socket interface that has three pins: positive, negative, and ground. Accordingly, the load’s plug should also have three pins corresponding to the power side to correctly obtain power supply. Note that there are three essential conditions that must be met: The first is that the shape, size, … Read more
Click Jicheng Training WeChat Follow me! ☀ Jicheng Training Network’s official WeChat is the most professional and concentrated in the industrial control field, providing technical sharing, free videos, and a communication platform. Follow Jicheng, and there will be no problem in improving your skills! 1. Overview All the content that needs to be discussed regarding … Read more