基于modbus的人机界面的研究，适合学习modbus协议和做人机界面的作为参考资料-Modbus-based human-computer interface research, for learning modbus protocol and HCI as a reference

Matlab communication with a Programmable Logic Controller (PLC) over an RS-232 serial interface using ASCII Modbus protocol. This code was developed while working with an Eaton-ELC PLC device and was modified for general distribution. Standard Modbus