In a word, the soft PLC has got the superior that hard PLC can't compare to, which representative the trend of the open numerical control system.
总之，软件PLC有着硬件PLC不可比拟的优越性，适应开放式数控系统的发展趋势。
The results show that the open numerical control system can also be applicable for numerical control transformation of other machine tool, so it has certain economy and practicality.
试验结果表明，这一开放式数控系统可以应用于其他机床的数控改造，且具有一定的经济性和实用性。
A kind of the pulse control mode, the drive and motor closed loop, but not to the numerical control system, the feedback device, in a sense, can open loop control called the servo control.
一种采用脉冲控制方式，此种驱动器与电机闭环，但不反馈到数控系统，这种驱动器在某种程度上可称为开环控制的伺服控制。
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