463
Symbol Math Instructions Section 3-11
Flags
Precautions 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.
Examples 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.
3-11-19UNSIGNED BINARY MULTIPLY: *U(422)
Purpose Multiplies 4-digit unsigned hexadecimal data and/or constants.
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
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.
*U(422)
R
Md
Mr
Md: Multiplicand word
Mr: Multiplier word
R: Result word
Variations Executed Each Cycle for ON Condition *U(422)
Executed Once for Upward Differentiation @*U(422)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program
areas
Step program
areas
Subroutines Interrupt tasks
OK OK OK OK
Area Md Mr R
CIO Area CIO 0000 to CIO 6143 CIO 0000 to
CIO 6142
Work Area W000 to W511 W000 to W510
Holding Bit Area H000 to H511 H000 to H510
Auxiliary Bit Area A000 to A959 A448 to A958
Timer Area T0000 to T4095 T0000 to T4094
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