07AC91 GJR5252300R0101 ABB

Whether a PLC-based PAC,or a PAC,can control this large filling line well,the final choice depends on specific functional and performance requirements.

In the past,machine builders were faced with a dilemma:with a smaller-sized PLC,the I/O point requirements and physical space constraints could be met,but performance was not satisfactory.An alternative is to choose a large PLC or PAC system.In most cases,large controllers are overkill for simple machine control needs,but they cannot be used because they cannot meet the needs of a specific application.

无论是基于PLC的PAC，还是PAC，都能很好的控制这个大型灌装生产线，最终的选择取决于特定的功能和性能要求。

过去，机器制造商面临着两难的选择：如果利用较小规格的PLC，可以满足I/O点的需求及物理空间的限制，但是在性能方面则差强人意。一种替代方案是选择大型PLC或者PAC系统。在大多数情况下，对于简单的机器控制需求来讲，大型控制器有点大材小用，但是又不能不用，否则便无法满足某种特定的应用需求。