Omron CPM1 Programming Manual

303
Binary Calculation Instructions Section 5-21
5-21-7 SIGNED BINARY MULTIPLY – MBS(––)
Limitations This instruction is available in the CQM1-CPU4@-E/-EV1 only.
DM 6143 to DM 6655 cannot be used for R.
Description MBS(––) multiplies the signed binary content of two words and outputs the 8-
digit signed binary result to R+1 and R. The rightmost four digits of the result
are placed in R, and the leftmost four digits are placed in R+1.
Note Refer to 1-10 Calculating with Signed Binary Data for more details.
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 0000 0000, otherwise OFF.
Example In the following example, MBS(––) is used to multiply the signed binary con-
tents of DM 0010 with the signed binary contents of DM 0012 and output the
result to DM 0100 and DM 0101.
Md: Multiplicand word
IR, SR, AR, DM, HR, TC, LR, #
Mr: Multiplier word
IR, SR, AR, DM, HR, TC, LR, #
Ladder Symbols
Operand Data Areas
R: First result word
IR, SR, AR, DM, HR LR
MBS(––)
Md
Mr
R
@MBS(––)
Md
Mr
R
Md
Mr
R +1 R
X
MBS(––)
DM 0010
DM 0012
DM 0100
Address Instruction Operands
00000 LD 00100
00001 MBS(––)
DM 0010
DM 0012
DM 0100
00100
Md: DM 0010
15B1
Mr: DM 0012
FC 1 3
R: DM 0100
D8 2 3
X
R+1: DM 0101
FF AA
(5,553)
(–1,005)
(–5,580,765)

Omron CPM1 Specifications

General

Brand	Omron
Model	CPM1
Category	Controller
Language	English