IS200TRLYH2C GE

IS200EMIOH1AFB GE PC
44A747816-G01 GE
IS200EDCFG1ADC GE
IS200GDDDG1AAA GE
SS1152 GE
DS200TCEAG1BNE GE
DS200SLCCG3AGH GE
DS200TBQBG1ABB GE
DS20OTBCAG1AAB GE
DS200TCQCG1BFE GE

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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

说明: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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