Statement List (STL) - DCE FEL ČVUT v Praze

Integer Math Instructions
7.11 /D Divide ACCU 2 by ACCU 1 as Double Integer
(32-Bit)
Format
Description
/D
Status word
/D (divide 32-bit integer numbers) divides the contents of ACCU 2 by the contents of
ACCU 1. The contents of ACCU 1 and ACCU 2 are interpreted as 32-bit integer
numbers. The result of the instruction is stored in accumulator 1. The result gives
only the quotient and not the remainder. (The instruction MOD can be used to get the
remainder.)
The instruction is executed without regard to, and without affecting, the RLO. The
status word bits CC 1, CC 0, OS, and OV are set as a function of the result of the
instruction.
The contents of accumulator 2 remain unchanged for CPUs with two ACCUs.
The contents of accumulator 3 are copied into accumulator 2, and the contents of
accumulator 4 are copied into accumulator 3 for CPUs with four ACCUs. The
contents of accumulator 4 remain unchanged.
See also Evaluating the Bits of the Status Word with Integer Math Instructions.
BR CC 1 CC 0 OV OS OR STA RLO /FC
writes: - x x x x - - - -
Status bit generation CC 1 CC 0 OV OS
Quotient = 0 0 0 0 -
-2147483648 = Quotient > 0 1 0 0 -
Quotient = 2147483648 1 0 1 1
Division by zero 1 1 1 1
Statement List (STL) for S7-300 and S7-400 Programming
A5E00706960-01 7-13