Omron C200HE User Manual
254
Example
In the following example, MBS(––) is used to multiply the signed binary contents
of IR 001 with the signed binary contents of DM 0020 and output the result to
LR 21 and LR 22.
of IR 001 with the signed binary contents of DM 0020 and output the result to
LR 21 and LR 22.
MBS(––)
001
DM 0020
LR 21
Address
Instruction
Operands
00000
LD
00000
00001
MBS(––)
001
DM
0020
LR
21
00000
Md: 001
1
5
B
1
Mr: DM 0020
F
C
1
3
R: LR 21
D
8
2
3
X
R+1: LR 22
F
F
A
A
(5,553)
(–1,005)
(–5,580,765)
5-20-8 DOUBLE SIGNED BINARY MULTIPLY – MBSL(––)
Md: First multiplicand word
IR, SR, AR, DM, HR, TC, LR
Mr: First multiplier word
IR, SR, AR, DM, HR, TC, LR
Ladder Symbols
Operand Data Areas
R: First result word
IR, SR, AR, DM, HR LR
MBSL(––)
Md
Mr
R
@MBSL(––)
Md
Mr
R
Limitations
Md and Md+1 must be in the same data area, as must Mr and Mr+1, and R
through R+3.
through R+3.
Description
MBSL(––) multiplies the 32-bit (8-digit) signed binary data in Md+1 and Md with
the 32-bit signed binary data in Mr+1 and Mr, and outputs the 16-digit signed
binary result to R+3 through R. Refer to page 27 for details on signed binary
data.
the 32-bit signed binary data in Mr+1 and Mr, and outputs the 16-digit signed
binary result to R+3 through R. Refer to page 27 for details on signed binary
data.
Md + 1
Md
Mr + 1
Mr
R + 1
R
R + 3
R + 2
x
Flags
ER:
Indirectly addressed DM word is non-existent. (Content of
DM word is
not BCD, or the DM area boundary has been exceeded.)
EQ:
ON when the result is zero (content of R+3 through R all zeroes), other-
wise OFF.
wise OFF.
N:
ON when bit 15 of R+3 is set to 1.
Binary Calculations
Section 5-20