Patent ID: 9581991
Date: 2017-02-28
CPC Classifications: G05B,Y02P

Claim:
1. A direct numerical control (DNC) operation system, comprising: a host apparatus comprising a storage device; a numerical controller comprising a storage device; and a communication line connecting the numerical controller to the host apparatus, the communication line being configured to perform bidirectional communication and to successively transmit numerical control (NC) data stored in the storage device of the host apparatus to the numerical controller to perform a DNC operation, wherein the numerical controller is configured to perform operation using the NC data received from the host apparatus via the communication line, and the numerical controller comprises a processor configured as: the host apparatus comprises a processor configured as: the numerical controller is further configured to the numerical controller is further configured to perform a prefetch antecedent to the operation of the NC data received from the host apparatus via the communication line, analyze the received NC data, and then store the analyzed NC data in the storage device of the numerical controller; and in response to a determination that the analyzed NC data includes any of the sub program call, the repeat instruction and the branch instruction, the search information write processing unit is configured to write, in the storage device in the numerical controller, search information that is required for searching for the NC data which is required by the host apparatus to execute the relevant instruction.