Add to ORKGBachelor thesis consists of three parts. First part describes and gives closer look at communication network AS-Interface. Based on the first theoretical part is proposed device managed by microprocesor - type slave, as memory for at least 8 alphanumerical signs. In the second part we find proposal of scheme wiring in Eagle lyer editor 4.12 program and proposal of circuit board. The circuit board has been manufactured and components installed according to the proposal. Finished circuit board was subsequently revived. The third part of the thesis is dedicated to programming. The source codes were written by using the C programming language. The program has been then recorded into microprocessor