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PLC s7300

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s
Preface,
Contents

SIMATIC
Function Block Diagram
(FBD) for S7-300 and S7-400
Programming

Bit Logic Instructions

1

Comparison Instructions

2

Conversion Instructions

3

Counter Instructions

4

Data Block Instructions

5

Jump Instructions

6

Reference Manual
Integer Math Instructions
Floating-point Math
Instructions
Move Instructions

This manual is part of the documentation
package with the order number:
6ES7810-4CA08-8BW1

Edition 03/2006
A5E00706955-01

7
8
9

Program Control Instructions

10

Shift and Rotate Instructions

11

Status Bit Instructions

12

Timer Instructions

13

Word Logic Instructions

14

Appendix
Overview of All FBD
Instructions

A

Programming Examples
Working with
Function Block Diagram
Index

B
C

Safety Guidelines
This manual contains notices you have to observe in order to ensure your personal safety, as well as to
prevent damage to property. The notices referring to your personal safety are highlighted in the manual
by a safety alert symbol, notices referring to property damage only have no safety alert symbol. The
notices shown below are graded according to the degree of danger.

Danger

!

indicates that death or severe personal injury will result if proper precautions are not taken.

!

indicates that death or severe personal injury may result if proper precautions are not taken.

!

Warning
Caution
with a safety alert symbol indicates that minor personal injury can result if proper precautions are not
taken.

Caution
without a safety alert symbol indicates that property damage can result if proper precautions are not
taken.

Notice
indicates that an unintended result or situation can occur if the corresponding notice is not taken into
account.
If more than one degree of danger is present, the warning notice representing the highest degree of
danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a
warning relating to property damage.

Qualified Personnel
The device/system may only be set up and used in conjunction with this documentation. Commissioning
and operation of a device/system may only be performed by qualified personnel. Within the context of
the safety notices in this documentation qualified persons are defined as persons who are authorized to
commission, ground and label devices, systems and circuits in accordance with established safety
practices and standards.

Prescribed Usage
Note the following:

!

Warning
This device and its components may only be u...
s
Preface,
Contents
Bit Logic Instructions
1
Comparison Instructions
2
Conversion Instructions
3
Counter Instructions
4
Data Block Instructions
5
Jump Instructions
6
Integer Math Instructions
7
Floating-point Math
Instructions
8
Move Instructions
9
Program Control Instructions
10
Shift and Rotate Instructions
11
Status Bit Instructions
12
Timer Instructions
13
Word Logic Instructions
14
Appendix
Overview of All FBD
Instructions
A
SIMATIC
Function Block Diagram
(FBD) for S7-300 and S7-400
Programming
Reference Manual
This manual is part of the documentation
package with the order number:
6ES7810-4CA08-8BW1
Programming Examples
B
Working with
Function Block Diagram
C
Edition 03/2006
A5E00706955-01
Index
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