PM866 ABB

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描述

数据存储区,用以存储工作数据。多以字、两字或多字为单位予以使用,是PLC进行模拟量控制,或记录数据所的。这个存储区的大小代表PLC的性能也是越大越好。趋势也是越来越大。小型机也如此。如OMRON公司的CQM1机,其DM区就有6k字。而过去同是小型机的C60P的DM区才64个字。大型机的DM可达10K以至几十K。

Edinburgh Sensors Gascard II CH4 100%
Edinburgh Sensors Gascard II CH4 100%
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