Unsigned Binary Multiply: *U(422) - Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual

Symbol Math Instructions
Flags
Precautions
Examples

3-11-19 UNSIGNED BINARY MULTIPLY: *U(422)

Purpose
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
464
Name Label
Error Flag ER
Equals Flag =
Negative Flag N
When *L(421) is executed, the Error Flag will turn OFF.
If as a result of the multiplication, the content of R, R+1, R+2, R+3 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.
When CIO 000000 is ON in the following example, D00100, D00110, D00111,
and D00110 will be multiplied as 8-digit signed hexadecimal values and the
result will be output to D00121 and D00120.
Multiplies 4-digit unsigned hexadecimal data and/or constants.
*U(422)
Md: Multiplicand word
Md
Mr: Multiplier word
Mr
R
R: Result word
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Block program Step program
areas
OK OK
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Operation
OFF
ON when the result is 0.
OFF in all other cases.
ON when the leftmost bit of the result is 1.
OFF in all other cases.
Subroutines
areas
OK
Md
CIO 0000 to CIO 6143
W000 to W511
H000 to H511
A000 to A959
T0000 to T4095
Section 3-11
*U(422)
@*U(422)
Not supported.
Interrupt tasks
OK
Mr R
CIO 0000 to
CIO 6142
W000 to W510
H000 to H510
A448 to A958
T0000 to T4094