| 摘要 |
PURPOSE:To shorten time with position by enabling to drive a step motor immediately when a step pulse is fed from an upgraded controller. CONSTITUTION:If the interval of a stepping pulse (c) fed from an up-graded controller is longer than that of a drive timing pulse (f) of a stepping motor output from a timer 9, the content of the first counter 5 becomes zero, and a stepping motor 11 is driven synchronously with the input step pulse (c). On the contrary, if the interval of the pulse (c) is shorter than that of the pulse (f), the content of the first counter 5 increases. Whenever the pulse (f) is output from the timer 9, the content of the second counter 7 increases, thereby varying the output of a ROM8 designated thereby to set new data in the timer 9. |
