In the vast realm of industrial control, Siemens stands out like a brilliant star. As one of the earliest industrial control manufacturers to enter the Chinese market, it maintains a formidable market share. Its PLC products attract the attention of many industrial control professionals with their exceptional quality, stable networks, and open compatibility, much like … Read more
1. Configuration in TIA Portal In TIA Portal, create a new project. This case selects the Siemens S7-300 PLC, model CPU 313C-2DP. This PLC is an integrated PLC with a built-in PROFIBUS-DP port, which can act as a master or a slave. In this case, the PLC acts as the master. Step 1: Add the … Read more
Practical Application of Profibus DP Data Acquisition You may have heard of Profibus DP (Decentralized Peripherals), a protocol frequently used for data transmission in Siemens PLC projects, especially in industrial automation, where it is widely applied. Today, let’s discuss how to use Profibus DP for data acquisition, allowing it to easily interface with PLCs to … Read more
1. Fatal Fault on Site A certain automotive welding workshop, Siemens S7-300 PLC (6ES7 315-2EH14-0AB0) suddenly reported error 0x1A3B, with 32 DP slaves going offline collectively. The monitoring screen displayed:<span>[2023-05-12 03:15] PROFIBUS-DP System Fault: Telegram timeout (Slave 17-32)</span> The signal amplitude was only 0.8Vpp (standard requirement ≥1.5Vpp), with a rise time jitter of 35ns (IEC61158 … Read more
To build a stable and reliable Profibus-DP network, termination resistors can be considered a “small component with a big role”! Many engineers often overlook their importance, resulting in spending several days troubleshooting inexplicable communication failures, only to find out that it was the termination resistors causing the trouble. Today, we will analyze this seemingly simple … Read more
In a Profibus-DP network, the bus length is one of the key factors affecting system stability. As the bus length increases, signal attenuation, delay, and interference also increase, which changes the requirements for termination resistors. Today, we will discuss in detail how to correctly choose and install termination resistors for different lengths of Profibus-DP buses. … Read more
M-Bus Master to PROFIBUS DP Slave – adfweb Converter-HD67053 Author: Zou Wuyi Mobile185-020-77899 Email: [email protected] 1 Product Features: “HD67053-B2-xxx” is a M-Bus Master Converter for converting between the PROFIBUS DP bus and the M-Bus . It has the following features: Electrical isolation between PROFIBUS and M-Bus ; Can be mounted on a 35mm DIN rail; … Read more
In a previous project, I was involved in the communication between the Yaskawa inverter and the S7-300. However, the available materials at night were all about control words and status words to control the inverter’s start and stop, as well as read some basic parameters. What I needed was to modify the inverter’s parameter values … Read more
This article mainly illustrates the specific application of the PROFIBUS-DP fieldbus in production sites through examples, detailing the hardware configuration, software programming, and relevant parameter settings for communication between Siemens PLC and frequency conversion devices via PROFIBUS-DP. In industrial applications, especially in the steel metallurgy industry, it is most common to control frequency conversion devices … Read more
Abstract In recent years, with the advancement of intelligent factory construction in the cement industry, many experts and scholars have dedicated themselves to the research of electric control systems for vertical mills to meet the needs of intelligent factory construction. Among them, the research on electric control systems for vertical mills based on bus control … Read more