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Siemens SIMATIC S5 User Manual

Siemens SIMATIC S5
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STEP 5 Operations S5-115F Manual
Example: The values of input bytes IB 19 and IB 20 are compared. If they are equal, output Q 3.0
is set.
Circuit Diagram STL CSF/LAD
Q 3.0
IB 19
C 1 C 2
=
IB 20
C 1 F
!=
C 2 Q
IB 19
IB 20 Q 3.0
LIB19
LIB20
!=F
= Q 3.0
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3.1.7 Arithmetic Operations
Arithmetic operations interpret the contents of the accumulators as fixed-point numbers and
manipulate them. The result is stored in ACCUM 1. Table 3-7 provides an overview of the arith-
metic operations. An example follows the table.
Table 3-7. Overview of Arithmetic Operations
Operation Meaning
Addition
The contents of both accumulators are added.
Operand
+ F
- F Subtraction
The contents of ACCUM 1 are subtracted from the contents of
ACCUM 2.
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Method of representation: only STL possible
The S5-115F has integrated function blocks for multiplication and division.
3-30
EWA 4NEB 811 6149-02

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Siemens SIMATIC S5 Specifications

General IconGeneral
Product type designationSIMATIC S5
Programming languageSTEP 5
Digital inputsVaries by model
Digital outputsVaries by model
Analog inputsVaries by model
Analog outputsVaries by model
Supply voltage24V DC
CPU TypeVaries by model
MemoryVaries by model
Digital I/OVaries by model
Analog I/OVaries by model
CommunicationPROFIBUS
Operating Temperature0°C to 60°C
Relative Humidity5% to 95% (non-condensing)

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