Design And Implementation Of Integrated Character Human-machine Interface

With control process increasingly complex in modern industrial process, the demand for industrial automation products is more and more diversified. The traditional monitoring system based on PLC and human-machine interface has been unable to well meet user requirements because of its cost or other reasons. Integrating the function of PLC and human-machine interface technology is becoming more and more popular, which not only reduces development cost, but also enhances product flexibility. Integrated character human-machine interface is the kind of integrated product as mentioned above. Compared with a monitoring system composed of PLC and Human-machine interface, Integration character human-machine interface has lower cost, smaller size and higher flexibility, etc.According to market research and demand analysis of integrated character human-machine interface, this thesis adopts the overall realization schemes which combines configuration software and integration character human-machine interface. The configuration software is used to configure monitoring screen in the computer and download the screen information to integration character human-machine interface. The thesis introduces in detail the function demand, overall design and implementation of configuration software. Integration character human-machine interface implements the functions of logical control, pulse output and dynamic display monitoring screen. It is implemented on the embedded PLC platform, including hardware module design and driver development. This thesis mainly states the driver development of the basis I/O, pulse output and human-machine interface module.Combined with motion control requirements of stepper motor applied in plane milling machine, this thesis introduces the application method of integrated character human-machine interface and gives related program and monitor screen implementation. The application attests the effectiveness of using the integration character human-machine interface to realize control and monitor functions. At the last, the thesis summarizes related work and prospects for the future development of integrated character human-machine interface.