Statement List (STL) - DCE FEL ČVUT v Praze

7 Integer Math Instructions
7.1 Overview of Integer Math Instructions
Description
The math operations combine the contents of accumulators 1 and 2. In the case of
CPUs with two accumulators, the contents of accumulator 2 remains unchanged.
In the case of CPUs with four accumulators, the contents of accumulator 3 is then
copied into accumulator 2 and the contents of accumulator 4 into accumulator 3. The
old contents of accumulator 4 remains unchanged.
Using integer math, you can carry out the following operations with two integer
numbers (16 and 32 bits):
• +I Add ACCU 1 and ACCU 2 as Integer (16-Bit)
• -I Subtract ACCU 1 from ACCU 2 as Integer (16-Bit)
• *I Multiply ACCU 1 and ACCU 2 as Integer (16-Bit)
• /I Divide ACCU 2 by ACCU 1 as Integer (16-Bit)
• + Add Integer Constant (16, 32 Bit)
• +D Add ACCU 1 and ACCU 2 as Double Integer (32-Bit)
• -D Subtract ACCU 1 from ACCU 2 as Double Integer (32-Bit)
• *D Multiply ACCU 1 and ACCU 2 as Double Integer (32-Bit)
• /D Divide ACCU 2 by ACCU 1 as Double Integer (32-Bit)
• MOD Division Remainder Double Integer (32-Bit)
Statement List (STL) for S7-300 and S7-400 Programming
A5E00706960-01 7-1