Siemens SIMATIC IM 151/CPU Manual page 171

B.23 Fixed-Point Math Instructions (16 Bits)
Math instructions of two 16-bit numbers. The result is in ACCU1–L.
In-
Address
struc-
ID
tion
+I – Add 2 integers (16 bits)
(ACCU1-L)=(ACCU1-L)+
(ACCU2-L)
–I – Subtract 2 integers (16 bits)
(ACCU1-L)=(ACCU2-L)–
(ACCU1-L)
I – Multiply 2 integers (16 bits)
*
(ACCU1-L)=(ACCU2-L)
(ACCU1-L)
/I – Divide 2 integers (16 bits)
(ACCU1-L)=(ACCU2-L):
(ACCU1-L)
The remainder of the division is in
ACCU1-H.
Status word for: +I, –I, I, /I
*
Instruction depends on:
Instruction controls:
ET 200S Interface Module IM 151/CPU
A5E00058783-01
Description
*
BR A1 A0
– – –
– Yes Yes
Instruction List
Length
Typical Execution Time in
in
s
Words
1 1.5
1 1.6
1 2.4
1 3.4
OV OS OR STA
– – – –
Yes Yes – –
RLO /FC
– –
– –
B-37