NUMERICAL CONTROL SYSTEM

摘要

A numerical control system is constituted of a data processor (1) and a numerical controller (2). When a request of access to the internal memory (2b) of the controller (2) from an application program (1a) is outputted, an access acceptance/rejection judging means (1b) judges whether the memory (2b) is accessible or unaccessible while referring to access acceptance/rejection information in an access acceptance/rejection information storing means (1c). An access request executing means (2a) in the controller (2) executes the access to the memory (2b) only when the access to the memory (2b) is allowed. Data which must not be freely accessed from users, are made unaccessible in this way, and any access to the data is rejected.