US Patent 7693680 Communications system for position detector

A communications system for a position detector comprises a position detector for detecting the amount of movement of a table, an A/D converter connected to the position detector, a numerical control device connected to the A/D converter and receiving a position signal converted by the A/D converter, and an information processor connected to the A/D converter via a USB capable of bidirectional communication. The information processor includes a storage section for preserving data and a program, a computing section for computationally operating the program, and a display section for indicating the results of computational operation by the computing section, and the data.