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