Cutler-Hammer D320 PLC, User Manual

Page: 83 / 258

Chapter 6: Instructions
71
Arithmetic Instructions
Mnemonic Command Word Double Word Description
ADD
(DADD)
Decimal addition
ADD
D =
S1 =
S2 = DADD
D =
S1 =
S2 = D = S1 + S2
(Decimal operation)
SUB
(DSUB) Decimal subtraction
SUB
D =
S1 =
S2 = DSUB
D =
S1 =
S2 =
D = S1 - S2
(Decimal operation)
MUL
(DMUL) Decimal
multiplication
MUL
D =
S1 =
S2 = DMUL
D =
S1 =
S2 =
D = S1 × S2
(Decimal operation)
DIV
(DDIV) Decimal division DIV
D =
S1 =
S2 = DDIV
D =
S1 =
S2 = D = S1/S2
(Decimal operation)
ADDB
(DADDB) BCD addition
ADDB
D =
S1 =
S2 = DADDB
D =
S1 =
S2 =
D = S1 + S2
(BCD operation)
SUBB
(DSUBB)
BCD subtraction
SUBB
D =
S1 =
S2 = DSUBB
D =
S1 =
S2 = D = S1 - S2
(BCD operation)
MULB
(DMULB) BCD multiplication MULB
D =
S1 =
S2 = DMULB
D =
S1 =
S2 = D = S1
×
S2
(BCD operation)
DIVB
(DDIVB) BCD division
DIVB
D =
S1 =
S2 = DDIVB
D =
S1 =
S2 =
D = S1/S2
(BCD operation)
ADC
(DADC) Decimal addition
w/carry ADC
D =
S1 =
S2 = DADC
D =
S1 =
S2 = D = S1 + S2 + CY
(Decimal operation, include carry)
SBC
(DSBC) Decimal subtraction
w/carry
SBC
D =
S1 =
S2 = DSBC
D =
S1 =
S2 =
D = S1 - S2 - CY
(Decimal operation, include carry)
ADCB
(DADCB) BCD addition
w/carry
ADCB
D =
S1 =
S2 = DADCB
D =
S1 =
S2 =
D = S1 + S2 + CY
(BCD operation, include carry)
SBCB
(DSBCB) BCD subtraction
w/carry SBCB
D =
S1 =
S2 = DSBCB
D =
S1 =
S2 = D = S1 - S2 - CY
(BCD operation, include carry)
ABS
(DABS) Absolute value
ABS
D = DABS
D =
D = |D|
(Absolute value operation)
NEG
(DNEG) Negative
(2’s complement) NEG
D = DNEG
D = Store the 2’s complement of D in D
(1’s comp 1).
NOT
(DNOT) NOT
(1’s complement)
NOT
D = DNOT
D =
Store the 1’s complement of D in D.