Today, we will learn about the Siemens PLC control of a frequency inverter to implement a three-speed control circuit. First, let’s take a look at the schematic diagram:From the schematic diagram above, let’s analyze the components needed, and I have prepared an image for you: Parameter Settings:Pr.77: Parameter write prohibition selection: Parameter value is 1 … Read more
Previously, I worked with microcontrollers and various models of frequency inverters including Mitsubishi D700, Siemens G120, Omron 3G3JZ, Panasonic VF200, Delta VFD-M, Xinjie VB3, Yonghong FID-B10, ChuanDian IS7, Huichuan MD500, Inovance Goodrive10, Schneider ATV12, Haiwei E, HoliTime HGD303, Tai’an F510, Hexin F2A, Rockwell PowerFlex-4, Fuji FRENIC-VP, Boke CV20, Yaskawa A1000, and Weichuang Artrich-AR60T. Most of … Read more
1. Overview of MODBUS Communication The MODBUS protocol is divided into MODBUS protocol over serial links and MODBUS protocol based on TCP/IP. The serial link MODBUS protocol includes MODBUS ASCII (string) and MODBUS RTU. The MODBUS protocol library provided by 200SMART supports MODBUS RTU communication. MODBUS RTU sends data in hexadecimal values. MODBUS ASCII sends … Read more