| 摘要 |
PURPOSE:To shorten the resetting time by securing such a system where the retrial is simply possible at a positioning point preceding by (n-1) pieces of points in case the abnormality occurs at the machine side during execution of a prescribed working program. CONSTITUTION:In a normal operation mode the present value of each axis is converted into the machine coordinate value by a coordinate conversion controller 2 based on a machine original point. A read control part 3 always stores the latest (n) pieces of machine coordinate value and auxiliary function code value. If a state abnormality interruption signal 101 of the machine side is supplied to an arithmetic control part 1 via an input/output control part 5, the working program under execution is interrupted and said (n) pieces of machine coordinate value and auxiliary function code value are stored into a memory part 4 from the part 3. When a machine coordinate/auxiliary function code value reading signal 102 is supplied to the part 3, these coordinate and function code values stored in the part 4 are read out via the part 3 before the interrupted working program is carried out again in a restart processing mode.
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