| 摘要 |
PURPOSE:To eliminate the requirement for setting of short circuit, by providing a means of separately receive each state signal which is produced in a motor driving system. CONSTITUTION:Receiving circuits 50a-50d are provided at the side of a numerical control part NC to receive separately each state signal produced in a motor driving system of each shaft, and the outputs of these receiving circuits are connected to the different bit lines of a data bus 51 via AND gates 54a-54d. The state signal of a processor 52 is read by opening the gates 54a-54d by the strobe signal (rs) and then supplying each state signal transmitted onto the bus 51. In this case, only the state signal given from the shaft Y is neglected in case an indication is given previously through a program to neglect the state signal from the shaft Y, for instance. As a result, the setting of the short circuit is not required in terms of the hardware. |
