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Preface,
Contents
1
Product Description
Basic Principles of Serial
Data Transmission
2
SIMATIC
3
Starting up the CP 341
4
Mounting the CP 341
CP 341
Point-to-Point Communication
Installation and Parameter
Assignment
Configuring and
Parameterizing the CP 341
5
Communication via Function
Blocks
6
Start-up Characteristics and
Operating Mode Transitions
of the CP 341
Manual
7
8
This manual is part of the documentation package
with the order number:
Diagnostics with the CP 341
Programming Example for
Standard Function Blocks
9
6ES7 341-1AH00-8BA0
Appendices
A
Technical Specifications
B
Connecting Cables
Communication Matrix of the
Protocols
C
Accessories and Order
Numbers
D
SIMATIC S7 Reference
Literature
E
04/2000
C79000-G7076-C341
Edition 03
Glossary,
Index
Danger
indicates that death, severe personal injury or substantial property damage
will
result if proper precau-
tions are not taken.
!
Warning
indicates that death, severe personal injury or substantial property damage
can
result if proper precau-
tions are not taken.
!
Caution
indicates that minor personal injury or property damage can result if proper precautions are not taken.
!
Note
draws your attention to particularly important information on the product, handling the product, or to a
particular part of the documentation.
Qualified Personnel
Only
qualified personnel
should be allowed to install and work on this equipment. Qualified persons are
defined as persons who are authorized to commission, to ground, and to tag circuits, equipment, and sys-
tems in accordance with established safety practices and standards.
Correct Usage
Note the following:
Warning
This device and its components may only be used for the applications described in the catalog or the
technical descriptions, and only in connection with devices or components from other manufacturers
which have been approved or recommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up, and installed cor-
rectly, and operated and maintained as recommended.
!
Trademarks
SIMATIC
)
, SIMATIC HMI
)
and SIMATIC NET
)
are registered trademarks of SIEMENS AG.
Some of other designations used in these documents are also registered trademarks; the owner’s rights
may be violated if they are used by third parties for their own purposes.
Copyright
Siemens AG 1998 All rights reserved
The reproduction, transmission or use of this document or its
contents is not permitted without express written authority.
Offenders will be liable for damages. All rights, including rights
created by patent grant or registration of a utility model or design, are
reserved.
Siemens AG
Bereich Automatisierungs- und Antriebstechnik
Geschaeftsgebiet Industrie-Automatisierungssysteme
Postfach 4848, D- 90327 Nuernberg
Disclaimer of Liability
We have checked the contents of this manual for agreement with the
hardware and software described. Since deviations cannot be pre-
cluded entirely, we cannot guarantee full agreement. However, the
data in this manual are reviewed regularly and any necessary cor-
rections included in subsequent editions. Suggestions for improve-
ment are welcomed.
{
Siemens AG 1998
Technical data subject to change.
Point-to-point connection CP 341Installation and Parameter Assignment
C79000-G7000-C341-02
Index-2
Siemens Aktiengesellschaft
C79000-G7076-C341
Preface
Purpose
This manual explains how to establish and operate a point-to-point connection.
Contents of This Manual
The manual describes the hardware and software of the CP 341 communication
processor and its integration in an S7-300 programmable controller. It is divided up
into instruction-based chapters and a reference section (appendices).
The following subjects are covered:
•
The basics of point-to-point communication with the CP 341
•
Starting up the CP 341
•
Mounting the CP 341
•
Communication via the CP 341
•
Debugging
•
Application example
•
Properties and technical specifications
Scope of This Manual
The manual is relevant for:
Product
Order Number
As of product status
CP 341-RS 232C
6ES7 341-1AH01-0AE0
01
CP 341-20mA TTY
6ES7 341-1BH01-0AE0
01
CP 341-RS 422/485
6ES7 341-1CH01-0AE0
01
Point-to-Point Communication CP 341
C79000-G7076-C341-03
iii
Preface
Changes Since Edition 01
In contrast with edition 01, this edition describes the additional functions of the
CP 341 (MLFB No. 6ES7 341-1_H01-0AE0).
•
Baud-rate range extended to 57.6 kbaud
•
Diagnostics alarm
•
Fast switch-over for RS485 module in half-duplex mode
•
Extended modes for reception with end-of-text codes
•
Shorter character delay times at low baud rates
•
ASCII protocol with fixed message frame length: sending in character delay
time matrix can be deactivated
Note
The descriptions of the CP 341 communication processors in this manual were
correct at the time of publication. We reserve the right to describe modifications to
the functionality of the modules in a separate Product Information.
Conventions
The abbreviation CP 341 is used in the documentation when information applies to
all three module variants: CP 341-RS 232C, CP 341-20mA TTY and
CP 341-RS 422/485.
Structure of This Manual
To help you to quickly find the information you require, this manual offers the
following:
A comprehensive list of contents.
•
In the main body of the text, the information in the left-hand column of each
page summarizes the contents of each section.
•
•
Following the appendices, a glossary defines important technical terms used in
the manual.
•
Finally, a comprehensive index allows quick access to information on specific
subjects.
Point-to-Point Communication CP 341
C79000-G7076-C341-03
iv
Preface
Other Manuals Required
Appendix E contains a list of further publications on the S7-300 and other
programmable controllers that you need to commission your system.
Electronic Manuals
The entire set of SIMATIC S7 documentation is available on CD-ROM.
Standards, Certificates and Approvals
The CP 341 communication processor meets the requirements and criteria of
IEC 1131, Part 2 and the requirements for CE marking. The CP 341 has
CSA certification and UL and FM recognition.
You will find more information on certification/recognition/approval and standards in
Appendix A.3.
Recycling and Disposal
The CP 341 is an environment-friendly product. It’s characteristic features include:
•
Housing plastic with halogen-free flame protection and is highly resistant to fire
•
Laser inscriptions (i.e. no labels)
Plastics identification in accordance with DIN 54840
•
Fewer materials used due to size reduction; fewer parts due to integration in
ASICs
•
The CP 341 is suitable for recycling on account of the low level of contaminants in
its components.
For further information about environment-friendly recycling and the procedure for
disposing of your old equipment, please contact:
Siemens Aktiengesellschaft
Anlagenbau und Technische Dienstleistungen
ATD ERC Recycling/Remarketing
Fronthauserstr. 69
D-45127 Essen
Phone: + 49 201/816 1540 (Hotline)
Fax: + 49 201/816 1504
The people there will adapt their advice to suit your situation and provide a
comprehensive and flexible recycling and disposal system at a fixed price. After
disposal you will receive information giving you a breakdown of the relevant
material fractions and the associated documents as evidence of the materials
involved.
Point-to-Point Communication CP 341
C79000-G7076-C341-03
v
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