R911299988 REXROTH

GJR5250000R0353 GE
1SBP260104R1001 GE
1SBP260021R1001 GE
GJV3075304R1 GE
GJR5251000R0202 GE
GJR5250000R0202 GE
DSRF180A
DSRB110
DSPC172-2
DSCA190V

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描述

计数器,可进行计数,到达某设定计数值可发送相应信号。可进行什么样的计数,计数范围多大,怎么设定,有多少计数器,则是PLC计数器性能的代表指标。

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,或记录数据所必不可少的。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。如日本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。

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