2 Instructions
2-166 CP1E CPU Unit Instructions Reference Manual(W483)
–/–L
Applicable Program Areas
Operands
Operand Specifications
Flags

Instruction Mnemonic Variations Function

code Function

SIGNED BINARY SUBTRACT

WITHOUT CARRY – @– 410 Subtracts 4-digit (single-word) hexadecimal data

and/or constants.

DOUBLE SIGNED BINARY

SUBTRACT WITHOUT

CARRY

–L @–L 411 Subtracts 8-digit (double-word) 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
Mi –: Minuend word
–L: First minuend word INT DINT 1 2
Su –: Subtrahend word
–L: First subtrahend word INT DINT 1 2
R–: Result word
–L: First result word INT DINT 1 2
Area Word addresses Indirect DM addresses Constants CF Pulse bits TR bits
CIO WR HR AR T C DM @D M *DM
Mi, Su 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.
Carry Flag P_CY •ON when the subtraction results in a borrow.
•OFF in all other cases.
•ON when the subtraction results in a borrow.
•OFF in all other cases.
Overflow Flag P_OF •ON when the result of subtracting a negative num-
ber from a positive number is in the range 8000 to
FFFF hex.
•OFF in all other cases.
•ON when the result of subtracting a negative num-
ber from a positive number is in the range
80000000 to FFFFFFFF hex.
•OFF in all other cases.
Underflow Flag P_UF •ON when the result of subtracting a negative num-
ber from a positive number is in the range 0000 to
7FFF hex.
•OFF in all other cases.
•ON when the result of subtracting a positive num-
ber from a negative number is in the range
00000000 to 7FFFFFFF hex.
•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.
R
Mi
Su
Mi: Minuend word
Su: Subtrahend word
R: Result word
-(410)
R
Mi
Su
Mi: Minuend word
Su: Subtrahend word
R: Result word
-L(410)