Click on the blue textFollow me! ☀The leading brand in automation remote education, the official WeChat platform of Jicheng Training Network! Follow Jicheng, and technical improvement is no problem! Source: Jicheng Training Network (Teacher Liang Zhibin) 1.3.1 PPI Network The PPI protocol is a communication protocol specifically developed for the S7-200. The communication ports (Port0/Port1) … Read more
Search on WeChat Technical Training 01 Siemens S7-200 SMART as Modbus Slave 1.Check the Micro/WIN SMART Modbus RTU Slave instruction library (Figure 1), which should include the MBUS_INIT and MBUS_SLAVE subprograms. 2.Use SM0.1 to call the MBUS_INIT subprogram for initialization, and use SM0.0 to call MBUS_SLAVE, specifying the corresponding parameters. Detailed explanations of the parameters … Read more
Number of Connections The S7-200 SMART CPU can connect to Siemens HMI devices that support the PPI protocol through the integrated RS485 port or signal board, or connect to Siemens HMI devices that support the S7 protocol through the integrated Ethernet port. When the CPU’s three physical interfaces are connected to Siemens HMI devices (including … Read more
Hello everyone, I am Ming Ge. Today, let’s talk about analog control with the S7-200 SMART PLC. Many friends find analog signals mysterious when they first encounter PLCs; in fact, they are just like the dimmer switches in our lives, not strictly black and white, but capable of precise adjustments. Now, let’s unveil the mystery … Read more
S7-200 and S7-300 Profibus-DP Communication 1. The S7-200CN CPU can connect to the DP network via EM277. 2. CPU315-2DP acts as the master station, while S7-200 CPU acts as the slave station. 3. Communication Issues 4. Hardware Configuration DP configuration for the master station, address is 2. 2. EM277 joins the DP network as a … Read more
1. Hardware Setup The Modbus communication in the program is conducted between the 0 communication ports of two S7-200 CPUs (it is best for each CPU to have two communication ports). On the master side, communication can also be established using the corresponding library files “MBUS_CTRL_P1” and “MBUS_MSG_P1” through the 1st communication port. Communication port … Read more
Forum Weekly 21 Jan 2022 This week’s highlights: 1. Microcontroller + WiFi Module and Siemens S7-200 Smart for Modbus TCP Ethernet Communication 2. Self-drawn – 24V regulated positive and negative 12V switching power supply schematic! 3. Self-written Tetris, Botu V16 4. How to make the servo motor rotate freely while powered on? 5. S7 200 … Read more
Due to time constraints, I will keep this article brief. This article is my original work, based on my own experiences, and not written by anyone else. When copying or quoting this article, please indicate the source; otherwise, I reserve the right to pursue legal action, so please take note. This article is quite technical, … Read more
Click the blue text to follow us Sometimes we are concerned about too many public account messages and miss some of the messages we like, and cannot see the push from the Industrial Control Forum in time. We can star or pin the public account. How to star and pin? 【Open an article from the … Read more