Before discussing RS485 communication, it is necessary to mention RS232 communication. If you are not familiar with RS232 communication, don’t worry. You have definitely seen and used the RS232 interface (if you don’t believe it, you can check behind your desktop computer at home). In fact, many people use the Siemens PCPPI programming cable to … Read more
Point“Jinan CNC Mold Technology Research Institute” focus Industry frontier, mechanical videos, CNC processing technology, 3D printing, industrial robots, productionprocesses, molds, machine tools, and other cutting-edge information are waiting for you here! Today, I will share several common interfaces and communication protocols for Siemens PLC. 1 Difference Between RS232 and RS485 Interfaces 1. Physical Structure of … Read more
01 Terminology Interpretation 1 word = 2 bytes; 1 byte = 8 bits. Checksum: A checksum is derived from the preceding data through a certain algorithm to verify the correctness of the data set. When inputting codes as data into a computer or other devices, input errors can easily occur. To reduce such input errors, … Read more
Many technicians have the following problems. In fact, aside from the communication methods defined by manufacturers, the most common reasons for communication failure in projects can be summarized as follows: Have you selected the correct communication protocol (Modbus, RS232 free protocol, CANopen, EtherCAT)? Is the communication cable properly made ( RS232 RXD TXD GND RS485 … Read more
Hello everyone, good evening~ Today, I will introduce how many communication methods are available for Siemens PLC. Siemens PLC is a brand that many people frequently use, so today I will share the various ways to achieve communication with Siemens PLC in upper computer development. Here, we can explain from three aspects: serial communication, Ethernet … Read more
Click↑↑Technical Training, follow and pin to subscribe for free for a long time 180,000+ industrial control professionals are following the WeChat platform: technical sharing, learning exchange, industrial control videos This article introduces how to achieve communication between Modbus and Profibus-DP protocol devices, the application of the Modbus to Profibus-DP gateway PM-160, and the communication methods … Read more
WeChat Search Technical Training The M580 is Schneider’s medium to large PLC, powerful in functionality, while the S7 200 SMART is Siemens’ small PLC, widely used in industrial settings where communication between two PLCs is often required. The M580 supports both MODBUS TCP and Ethernet/IP industrial Ethernet protocols, and the S7 200 SMART can also … Read more
Siemens 200smart Modbus RTU Communication Example Communication Materials: 1) Two PLCs, namely the 200smart CR60 and SR20; 2) Two DP connectors (6ES7972-0BX12-0XA0) 3) Several connecting wires (for PLC power and communication) Verification Content: Set: CR60 PLC as the master station, sending the PLC system clock (8 bytes of information) to the SR20 slave station; the … Read more
Introduction In practical work sites, PLCs are often used to control inverters. There are several ways to control inverters via PLCs, such as terminal control, analog control, and communication control. Among these, communication control has certain advantages over the first two methods, such as being able to read multiple data from the inverter with just … Read more
Search on WeChat Technical Training I have previously worked with microcontrollers and various models of inverters such as Mitsubishi D700, Siemens G120, Omron 3G3JZ, Panasonic VF200, Delta VFD-M, Xinjie VB3, Yonghong FID-B10, Chint IS7, Inovance MD500, Yaskawa Goodrive10, Schneider ATV12, Haiwei E, Holley HGD303, Taian F510, Hexin F2A, Rockwell PowerFlex-4, Fuji FRENIC-VP, Boke CV20, Yaskawa … Read more