| 摘要 |
PURPOSE:To enable management of data thus to ensure safety of machine or working place upon erroneous turning off by providing power interruption treating means for opening the circuit through hardware upon finish of necessary post processing prior to opening of circuit when power source turn-off signal is inputted. CONSTITUTION:Upon turning off of power source switch 2, a pulse is fed through a circuit 10 to FF5 to maintain the output high. Said pulse is also fed through a circuit 11 to power source interruption treating means 6 where it is differentiated through a differentiator 8 and fed to ITC9 thus to interrupt CPU40. CPU40 will inquire the status of ITC9, so when providing the highest priority to turn-off of power source, it will perform processing against the interruption of power source turn-off. In other word, the work is stopped, then the tools are moved to safe position to confirm that the machine tool to be controlled is not under dangerous condition thereafter data is transferred to a memory to produce a power source interruption signal thus to open the power source circuit 12 in numeric controller 4 and to manage data or ensure the safety of machine. |
