| 摘要 |
PURPOSE:To confirm write of an external memory by a simple constitution, by writing a necessary operating signal in the external memory, also sending back the signal as it is to the second internal memory, and outputting an operation command signal of a device to be controlled, by said signal. CONSTITUTION:When a signal from a numerical control computer 2 is inputted to an input part 4, it is processed by a sequence processing part 6, and a necessary operating signal is applied to the first internal memory 8, and is written in an external memory 11 throufh a relay part 10. When it is written in the external memory 11, a signal as it is, which is not other completion signal is sent back to the second internal memory 9 through the relay part 10, and by this sent-back signal, an operation command signal is applied to a device to be controlled 1 from an output part 5. Unless write to the external memory 11 is completed, the operation command is not outputted, therefore, it is possible to hold and confirm the external memory 11 by the operation command. |
