Resumen

MEJIA-UGALDE, Mario. Keyboard with Universal Communication Protocol Applied to CNC Machine. Ing. invest. y tecnol. [online]. 2014, vol.15, n.2, pp.209-220. ISSN 2594-0732.

This article describes the use of a universal communication protocol for industrial keyboard based microcontroller applied to computer numerically controlled (CNC) machine. The main difference among the keyboard manufacturers is that each manufacturer has its own programming of source code, producing a different communication protocol, generating an improper interpretation of the function established. The above results in commercial industrial keyboards which are expensive and incompatible in their connection with different machines. In the present work the protocol allows to connect the designed universal keyboard and the standard keyboard of the PC at the same time, it is compatible with all the computers through the communications USB, AT or PS/2, to use in CNC machines, with extension to other machines such as robots, blowing, injection molding machines and others. The advantages of this design include its easy reprogramming, decreased costs, manipulation of various machine functions and easy expansion of entry and exit signals. The results obtained of performance tests were satisfactory, because each key has the programmed and reprogrammed facility in different ways, generating codes for different functions, depending on the application where it is required to be used.

Palabras llave : microcontroller; keyboard; USB; AT; PS/2; protocol.

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