Siemens SIMATIC IM 151/CPU, Manual

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Instruction List
B-46
ET 200S Interface Module IM 151/CPU
A5E00058783-01
B.35 Data Type Conversion Instructions
Result
The results of the conversion are in ACCU1.
The execution time for the conversion of real numbers depends on the value.
In-
struc-
tion
Address
ID
Description
Length
in
Words
Typical Execution Time in
s
BTI – Convert contents of ACCU1 from BCD to
integer (16 bits) (BCD To Int) 1 4.7
BTD – Convert contents of ACCU1 from BCD to
double integer (32 bits) (BCD To Doubleint) 1 11.5
DTR – Convert contents of ACCU1 from double
integer (32 bits) to real (32 bits) (Doubleint
To Real) 1 < 15
ITD – Convert contents of ACCU1 from integer
(16 bits) to double integer (32 bits) (Int To
Doubleint) 1 0.1
Status word for: BTI, BTD, DTR, ITD BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – – –
Instruction controls: – – – – – – – – –
ITB – Convert contents of ACCU1 from integer
(16 bits) to BCD (Int To BCD) 1 5.1
DTB – Convert contents of ACCU1 from double
integer (32 bits) to BCD (Doubleint To
BCD) 1 11.8
Status word for: ITB, DTB BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – – –
Instruction controls: – – – Yes Yes – – – –
RND – Convert real number to 32-bit double inte-
ger. 1 < 20
RND– – Convert real number to 32-bit double inte-
ger. Rounded up to next integer. 1 < 20
RND+ – Convert real number to 32-bit double inte-
ger. Rounded up to next integer. 1 < 20
TRUN
C – Convert real number to 32-bit double inte-
ger. Digits after the decimal point are trun-
cated. 1 < 20
Status word for: RND, RND–, RND+,
TRUNC BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – – –
Instruction controls: – – – Yes Yes – – – –