MCF41A0150-503-4-00 为您节约成本 替您省钱

3HAC025562-001
ACS800-704-0910-7
6FM1723-3AA10
1C31129G04
5A26458G05
3500/33-01-00
3500/92-02-01-00
6ES5955-3LC14
1394C-SJT22-T-RL
TVD1.3-15-03
6SN1118-0DK23-0AA1
AR-B1672 V1.2
C200/10/1/1/1/00
6ES7338-7UH01-0AC0

 

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描述

本指令与ADD指令相似,是把两个四位BCD数作带借位减法,差值送入指定通道,其操作数同ADD指令。在编写SUB指令语言时,必须指定被减数,减数和差值的存放通道三个数

执行减法运算前必须加一条清进位位指令CLC(41);被减数和减数必须是BCD数,否则25503置ON,不执行SUB指令;若运算结果有借位,则进位标志继电器25504为ON;若运算结果为零,则专用继电器25506变为ON。

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