Bcd Subtraction: -B(414)/ -Bl(415)/-Bc(416)/-Bcl(417) - Omron SYSMAC CVM1 Series Operation Manual

Symbol Math Instructions
5-20-4 BCD Subtraction: –B(414)/ –BL(415)/–BC(416)/–BCL(417)
BCD SUBTRACT WITHOUT CARRY: –B(414)
Ladder Symbol
(414)
–B Mi
Variations
j –B(414)
DOUBLE BCD SUBTRACT WITHOUT CARRY: –BL(415)
Ladder Symbol
(415)
–BL Mi
Variations
j –BL(415)
BCD SUBTRACT WITH CARRY: –BC(416)
Ladder Symbol
(416)
–BC Mi
Variations
j –BC(416)
DOUBLE BCD SUBTRACT WITH CARRY: –BCL(417)
Ladder Symbol
(417)
–BCL Mi
Variations
j –BCL(417)
Description
268
Operand Data Areas
Mi: Minuend word
Su R
Su: Subtrahend word
R: Result word
Operand Data Areas
Mi: 1
Su R
Su: 1
R: 1
Operand Data Areas
Mi: Minuend word
Su R
Su: Subtrahend word
R: Result word
Operand Data Areas
Mi: 1
Su R
Su: 1
R: 1
BCD SUBTRACT WITHOUT CARRY
When the execution condition is OFF, –B(414) is not executed. When the execu-
tion condition is ON, –B(414) subtracts the BCD contents of Su from Mi, and
places the result in R. If the result is negative, CY is set and the 10's complement
of the actual result is placed in R. To convert the 10's complement to the true
result, subtract the content of R from 0000.
Mi
CIO, G, A, T, C, #, DM, DR, IR
CIO, G, A, T, C, #, DM, DR, IR
CIO, G, A, DM, DR, IR
st
minuend word CIO, G, A, T, C, #, DM
st
subtrahend wordCIO, G, A, T, C, #, DM
st
result word CIO, G, A, DM
CIO, G, A, T, C, #, DM, DR, IR
CIO, G, A, T, C, #, DM, DR, IR
CIO, G, A, DM, DR, IR
st
minuend word CIO, G, A, T, C, #, DM
st
subtrahend wordCIO, G, A, T, C, #, DM
st
result word CIO, G, A, DM
– Su CY
Section 5-20
R