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2 Instructions
CP1E CPU Unit Instructions Reference Manual(W483)
Symbol Math Instructions
2
*/*L
*/*L
Applicable Program Areas
Operands
Operand Specifications
Flags
Instruction Mnemonic Variations
Function
code
Function
SIGNED BINARY MULTIPLY * @* 420
Multiplies 4-digit signed hexadecimal data and/or
constants.
DOUBLE SIGNED BINARY
MULTIPLY
*L @*L 421
Multiplies 8-digit signed hexadecimal data and/or
constants.
Symbol
* *L
Area Step program areas Subroutines Interrupt tasks
Usage OK OK OK
Operand Description
Data type Size
* *L * *L
Md
*: Multiplicand word
*L: First multiplicand word
INT DINT 1 2
Mr
*: Multiplier word
*L: First multiplier word
INT DINT 1 2
R First result word DINT LINT 2 4
Area
Word addresses Indirect DM addresses
Constants CF Pulse bits TR bits
CIO WR HR AR T C DM @DM *DM
Md, Mr
OK OK OK OK OK OK OK OK OK
OK
--- --- ---
R ---
Name Label
Operation
* *L
Error Flag P_ER OFF OFF
Equals Flag P_EQ • ON when the result is 0.
• OFF in all other cases.
• ON when the result is 0.
• OFF in all other cases.
Negative Flag P_N • ON when the leftmost bit of the result is 1.
• OFF in all other cases.
• ON when the leftmost bit of the result is 1.
• OFF in all other cases.
*(420)
R
Md
Mr
Md: Multiplicand word
Mr: Multiplier word
R: Result word
*L(421)
R
Md
Mr
Md: 1st multiplicand word
Mr: 1st multiplier word
R: 1st result word