Interactive data processing unit which is located at a distance from an FA control unit and capable of direct access to a memory in the FA control unit. When an access request to a memory (3) in a CNC (30) is issued by a device in an MMC (20), a remote access control means (1) outputs the access request...http://www.google.de/patents/US6219583?utm_source=gb-gplus-sharePatent US6219583 - Control system