Omron SYSMAC CJ - REFERENCE MANUAL 08-2008

464
Symbol Math Instructions Section 3-11
Description *U(420) multiplies the binary values in Md and Mr and outputs the result to R,
R+1.
Flags
Precautions When *U(422) is executed, the Error Flag will turn OFF.
If as a result of the multiplication, the content of R, R+1 is 0000 hex, the
Equals Flag will turn ON.
If as a result of the multiplication, the content of the leftmost bit of R+1 is 1,
the Negative Flag will turn ON.
Examples When CIO 000000 is ON in the following example, D00100 and D00110 will
be multiplied as 4-digit unsigned binary values and the result will be output to
D00121 and D00120.
Counter Area C0000 to C4095 C0000 to C4094
DM Area D00000 to D32767 D00000 to
D32766
EM Area without bank E00000 to E32767 E00000 to
E32766
EM Area with bank En_00000 to En_32767
(n = 0 to C)
En_00000 to
En_32766
(n = 0 to C)
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_ 32767
(n = 0 to C)
Constants #0000 to #FFFF
(binary)
---
Data Registers DR0 to DR15 ---
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area Md Mr R
R +1 R
Md
Mr
(Unsigned binary)
(Unsigned binary)
(Unsigned binary)
×
Name Label Operation
Error Flag ER OFF
Equals Flag = ON when the result is 0.
OFF in all other cases.
Negative Flag N ON when the leftmost bit of the result is 1.
OFF in all other cases.