| 摘要 |
PURPOSE:To automatically identify the omission of the NC data by transferring the number of blocks of the transferred NC data to the remote side after the NC data is totally transferred and checking at the reception side whether the number of received blocks is coincident with that of the transferred blocks or not. CONSTITUTION:An NC data transfer system comprises a digitizer 101, an external memory 102 consisting of a program file unit including a computer that receives and stores the NC data, a communication circuit 103, and a machine tool 104 that undergoes the numerical control based on the NC program data stored in the memory 102. Furthermore a memory part 101a stores the block number Bn of the NC data transferred to the memory 102 from the digitizer 101 and a memory part 102a stores the block number Br received by the memory 102. The digitizer 101 of such a constitution monitors the number Bn and transfers this number Bn to the memory 102 after the NC data is totally transferred. Then the memory 102 serving as the reception side monitors the received block number Br to check it.
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