Siemens SIMATIC S5 CP 523 User manual
.—
SIMATIC
S5
CP 521
Printer/ASCll Communications
Module
Manual
Order No. 6ES5998-0UD21
GWA4NEB812 6030-02b
STEP 5®and SIMATIC®are registered trademarks of Siemens AG.
Siemens has developed this document for its licensees and customers. The information contained
herein is the property of Siemens and may not be copied, used, or disclosed to others without prior
written approval from Siemens. Users are cautioned that the material contained herein is subject to
change by Siemens at any time and without prior notice.
Siemens shall not be responsible for any damages, including consequential damages, caused by
reliance on material presented, including but not limited to typographical, electronic, arithmetic,or
listing errors.
Hazardous voltage.
Can cause death, severe personal
injury, or substantial property damage.
Restrict use to qualified personnel.
See safety instructions.
WARNING!
Only qualified personnel should install or maintain this equipment after becoming thoroughly
familiar with all warnings, safety notices, and maintenance procedures contained in this manual.
The successful and safe operation of this equipment is dependent upon proper handling, installa-
tion, operation, and maintenance.
The following are definitions of the terms “qualified person,” “danger,” “warning,” and “caution,”
as applicable for this document.
Qualified Person
One who is familiar with the installation, con-
struction, and operation of this equipment and
the hazards involved. In addition, the person
should have the following qualifications:
• Be trained and authorized to use and tag
circuits and equipment in accordance
with established safety practices
• Be trained in the proper care and use of
protective equipment in accordance with
established safety practices
• Be trained in rendering first aid
Indicates loss of life, severe personal injury, or
substantial property damage will result if proper
precautions are not taken.
Indicates loss of life, severe personal injury, or
substantial property damage can result if proper
precautions are not taken.
Indicates minor personal injury or property
damage can result if proper precautions are not
taken.
CAUTION
WARNING
DANGER
Copyright ©Siemens AG 1989
Third Edition, September 1989
Printed in the Federal Republic of Germany
GWA 4NEB 812 6030-02b
ASCII Code Table
Principle of Operation and Adressing
Print Mode
Hardware Installation
ASCII Mode
System Overview
Technical Description
Notes on Operation
Introduction
Preface
1
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Index
8
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Appendices A/B
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GWA 4NEB 812 6030-02b
CP521
Preface
Preface
The CP 521
is
a powerful printer/ ASCII communications module for the S5-1OOU
programmable controller. To be able to make the best use of the module, you
require detailed information.
The performance of the
S5-1
OOU is constantly being increased. For this reason,
the manual of the
S5-
10OU has become very large.
This manual only gives facts and examples which are relevant to the
CP
521.
Demands for a higher quality of technical documentation have also been met,
which means:
. Standardization of terminology
●
More detailed breakdown of subjects
●
Illustration of individual problems
●
User-friendly arrangement of the contents
The aim is that both users with little previous experience and SIMATIC S5 experts
.should find all the information that they require to work with the CP 521.
However, the applications are so numerous that not all the problems that might
occur can be dealt with in one manual. For other problems, please ask your
Siemens
representative for advice.
GWA 4NEB 812
603002b
CP 521 Introduction
Introduction
It is important to study the introduction carefully before reading the rest of the
manual. This will help you to use the manual and will save you time.
Description of contents
This manual is a comprehensive description of the CP 521. The manual can be
divided into blocks according to topics.
• Description
- The "System Overview" contains information on the tasks the module can
perform and on how the module is used in the S5-100U.
- The "Technical Description" contains general information on the principle
of operation of the module, technical specifications, details of the serial
interface and input/output (I/O) modules, and a list of accessories.
• Installation and operation
- The "Hardware Installation" contain all the information you require to
install the module and connect it to a printer or other peripheral device
(connector pin assignments and terminal diagrams).
- "Notes on Operation" describes restart characteristics and actual
operation. This chapter also contains the error messages that can occur
during startup.
• Principle of operation and addressing
- This is a general description of how data transfer between the CPU, the
CP 521 and the I/O modules is coordinated.
- This chapter also describes how the module is addressed.
• Functional description
We have devoted a separate chapter to the "Printer mode" and the "ASCII
mode". Each of these chapters contains the information necessary for
programming the module for the relevant mode. This saves you time-
consuming searches in the manual.
GWA 4NEB 812 6030-02b
vii
Introduction CP521
• Appendix A: Summary
All the information you require to operate the CP 521 has been gathered
together here in list form. This is for those users who have read the manual
and wish to find some brief item of information quickly.
• Appendix B: Application example
This recaps all user inputs from installation through cabling to programming
illustrated by the way of example of a point-to-point connection.
The application example illustrates the ASCII mode and contains an exe-
cutable program.
Since the module can only be used in conjunction with the S5-100 U, it is assumed
that you have a copy of the S5-100U manual.The basic information on the STEP 5
programming language contained in the S5-100U manual is sufficient for
operating the CP 521.
Conventions
In order to improve the readability of the manual, a menu-style breakdown has
been used, i.e.:
• The individual chapters can be quickly located by means of a thumb register.
• There is an overview containing the headings of the individual chapters at the
beginning of the manual.
• Each chapter is preceded by a breakdown of its subject matter.
The individual chapters are subdivided into sections and subsections. Boldface
type is used for further subdivisions.
• Pages, figures and tables are numbered separately in each chapter. The page
following the chapter breakdown contains a list of the figures and tables
appearing in that particular chapter.
viii
GWA4NEB8126030-02b
CP 521 Introduction
Certain conventions were observed when writing the manual. These are
explained below.
• A number of abbreviations have been used.
Example: Programmer (PG)
• Footnotes are identified by superscripts consisting of a small digit (e.g. "1") or
"*". The actual footnote is generally at the bottom left of the page or below
the relevant table or figure.
• Cross-references are shown as follows:
"(7.3.2)" refers to subsection 7.3.2.
No references are made to individual pages
• All dimensions in drawings etc. are given in millimetres/inches (mm/in.).
• Information of particular importance is framed in
grey-bordered rectangles.
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• All data in connection with the programmer refers to the English version of
the PG 615 and PG 685. The relevant user manual contains a detailed
description of programming procedures with this programmer.
• Alle Angaben zu den Programmiergeräten beziehen sich auf die deutschen
Versionen des PG 615 und PG 685. Eine ausführliche Beschreibung der Pro-
grammierung mit diesen Geräten finden Sie in den zugehörigen Bedienungs-
anleitungen.
Manuals can only describe the current version of the programmer. Should
modifications or supplements become necessary in the course of time, a
supplement will be prepared and included in the manual the next time it is
revised. The relevant version or edition of the manual appears on the cover. The
present manual is edition "2". In the event of a revision, the edition number will
be incremented by "1".
At the end of the manual you will find correction forms.Please enter in these
forms any suggestions you may have in the way of improvements or corrections
and send them to us. Your comments will help us to improve the next edition.
GWA 4NEB 812 6030-02b
ix
Introduction CP521
Courses
Siemens provide SIMATIC 55 users with extensive opportunities for training.
For more information, please contact your Siemens representatives.
Reference literature
This manual is a comprehensive description of the CP 521. Topics not specific to
the CP 521 however, are only briefly dealt with. You will find more detailed
information in the following literature:
•Speicherprogrammierbare Steuerungen SPS (only available in German)
Volume 1: Logic and sequential controls; from the control problem to the
control program.
Günter Wellenreuther, Dieter Zastrow
Braunschweig 1987
Contents:
- How a programmable controller works
- The theory of logic control using the STEP 5 programming language for
SIMATIC 55 programmable controllers.
Order No.: ISBN 3-528-04464-0
•Automating with the S5-115U
SIMATIC 55 Programmable Controllers
Hans Berger
Second, revised edition, Siemens AG, Berlin and Munich 1987
Contents:
- STEP 5 programming language
- Program processing
- Integral program blocks
- Interfaces to the peripherals
Order No.: ISBN 3-8009-1526-X
x
GWA4NEB8126030-02b
CP 521 Introduction
• Programming Primer for the SIMATIC (R) S5-100U
Practical Exercises with the PG 615 Programmer
Siemens AG, Berlin and Munich, 1988
Contents:
- Assembly and installation of the S5-100U
- Introduction to programming with the PG 615
Order No.: ISBN 3-8009-1500-6
GWA 4NEB 812 6030-02b xi
CP 521 Introduction
• Remarks Form
The Remarks Form is provided for your comments and suggestions. If you are
in the United States, please use the postage-paid form.
Conventions
The following conventions are used in this book and are listed for your reference.
Convention Definition Example
A box that indicates a type
of hazard,describes its
implications, and tells you
how to avoid the hazard is
safety notation. Some safety
notation includes a graphic
symbol representing an
electrical or radio-frequency
hazard. All safety notation has
one of the following levels of
caution:
• Indicates that loss of life,
severe personal injury, or
substantial property damage
will result if proper pre-
cautions are not taken.
• Indicates that loss of life,
severe personal injury, or
substantial property damage
can result if proper pre-
cautions are not taken.
• Indicates that minor
personal injury or property
damage can result if proper
precautions are not taken.
GWA 4NEB 812 6030-02b
xiii
REMARKS FORM
Your comments and recommendations will help us to improve the quality and
usefulness of our publications. Please take the first available opportunity to fill
out this questionnaire and return it to Siemens. Only if you are in the United
States of America should you use the postage-paid form.
Returning this form assures you of receiving all changes and updates to this
document.
Please check the industry that applies to you:
Automotive
Chemical
Electrical Machinery
Food
Instrument and Control
Nonelectrical Machinery
Petrochemical
Pharmaceutical
Plastic
Pulp and Paper
Textile
Transportation
Other___________
1. Is this document well organized? Yes No
2. Is the information easy to find? Yes No
3. Is the text easy to understand? Yes No
4. Is the document technically accurate? Yes No
5. Does the level of technical detail meet your requirements? Yes No
6. Would you like more illustrations? Yes No
7. Please ratethe quality of the graphics: Excellent Good
Adequate Poor
Additional Comments:
Manual: CP 521 Order No.: 6ES5 998-8RD21 Edition 3
Name:
Title:
Company Name:
Address:
City: State: Zip:
GWA 4NEB 812 6030-02b
1 System Overview
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GWA 4NEB 812 6030-02b
Figures
1-1. Complete Configuration: A Programmable Controller
with a CP 521 and Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . .1- 2
1-2. Complete Configuration: Point-To-Point Connection . . 1 - 3
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GWA4NEB8126030-02b
CP 521 System Overview
1 System Overview
The CP 521 is a powerful and active printer / ASCII communications processor
module that can be used in the S5-100U (not with CPU 100, 6ES5 100-8MA01). The
module has a dedicated processor and can be operated in print mode or ASCII
mode.
Print mode enables printout of message texts. This allows you to document
process states and process faults.
In ASCII mode, the module can exchange data with other peripheral devices such
as terminal devices, communications modules or also other CP 521s. In this way,
you can network programmable controllers (point-to-point connection).
The peripheral device and the CP 521 are connected via a serial interface. You
have the option of a passive TTY current-loop interface or an RS-232-C (V.24)
interface.
Parameter assignment to the printer interface and configuration of message
texts is supported by the DB editor of the programmers. The parameters of the
printer interface are either stored in DB 1 on a memory submodule or transferred
direct in the user program.
GWA 4NEB 812 6030-02b
1-1
System
Overview
CP521
In print mode, the CP 521 assumes a printer with a RS-232-C (V.24) or active TTY
interface. The printout of message texts does not increase the res~onse time of
the programmable controller. You can have the following printed out:
● Texts configured by the user on a memory submodule (data blocks 2
● Time of day and date from the module’s own real-time clock.
. Values for variables to be transferred via the
1/0
bus to the
CP
521.
—
to 63).
Figure 1-1. Complete Configuration: A Programmable Controller with a
CP
521
and Printer
12GWA 4NEB 812 6030-02b
CP521System Overview
In In ASCII mode, the
CP
521 assumes a peripheral device (terminal, modem,
CP
523 etc. ) with an RS-232-C (V.24) interface or active TTY interface. ASCII mode
enables you to transmit message frames between the CPU and an peripheral
device connected to the CP 521. Maximum data throughput is six bytes of useful
data per two program scans. This means that a maximum of 60 bytes/s can be
transmitted given a program scan time (OB 1 ) of, for example, 50 ms.
The CP 521 can be used to
The CP 521 can be used to
. Send fixed-length message frames
. Send variable-length message frames
●
Receive fixed-length message frames
●
Receive variable-length message frames
You can define the transmission mode in the user program.
The time from the module’s own real-time clock can also be used in ASCII mode
for tasks in the user program requiring the date and time of day.
Figure 1-2. Complete Configuration: Point-To-Point Connection
GWA 4NEB 812 6030-02b
1-3
2 Technical Description
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2.1 Principle of operation of the CP 521. . . . . . . . . . . . . . . . . .2 - 1
2.2 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 4
2.3 Serial Interface CP 521 - Peripheral Device. . . . . . . . . . . . 2 - 5
2.3.1 Print Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 7
2.3.2 ASCII Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 8
2.4 Memory submodule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 11
2.5 Hardware Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 12
2.6 Backup Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 12
2.7 Accessories List and Ordering Data. . . . . . . . . . . . . . . . . . .2 - 13
GWA 4NEB 812 6030-02b
Figures
2-1. Schematic Representation of the CP 521 . . . . . . . . . . . . . . 2 - 1
2-2. 11-Bit Character Frame with 7 Data Bits . . . . . . . . . . . . . . . 2 - 5
2-3. 11-Bit Character Frame with 8 Data Bits . . . . . . . . . . . . . . . 2 - 6
2-4. Timing Diagram for Data Transfer Between the
CP and the Peripheral Device . . . . . . . . . . . . . . . . . . . . . . . .2 - 10
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Tables
2-1. Methods of Transmission in Print Mode . . . . . . . . . . . . . . . 2 - 7
2-2. Valid Control Signals of the RS-232-C (V.24) Interface
in Handshake ON Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 9
2-3. Overview of Permissible User Submodules . . . . . . . . . . . . 2 - 11
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GWA4NEB8126030-02b
CP 521 Technical Description
2 Technical Description
2.1 Principle of operation of the CP 521
The CP 521 handles data transfer with a peripheral device autonomously. Data
transfer between the CPU and the CP 521 must always be started by the CPU by
sending a job request to the CP 521.
Figure 2-1. Schematic Representation of the CP 521
I/O bus
CP 521
EPROM/EEPROM
memory
submodule
DB1 (Parameter setting
data for the serial
interface and con-
figuration data for the
format of message text
printouts DB 2 to 63 (up
to 255 message texts))
RAM
Send mailbox
Receive mailbox
Message buffer
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Micro-
processor
Operating system
memory
Internal bus
8-byte
transfer
memory
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V.24 (RS-232-C)
serial interface
or TTY inter-
face
(25-pin subminia-
ture D Cannon
connector) of
peripheral device
(printer, CP 523, CPU
944, etc.)
Integrated
real-time
hardware clock
Typical jobs in print mode would be, for example:"Print message text No. 20" or,
in ASCII mode: "Receive a message from a peripheral device.
GWA 4NEB 812 6030-02b
2-1
Technical Description CP521
Print mode
The "Print message text XY" job causes the message text stored in the memory
submodule under the number XY to be transferred to the printer via the serial
interface. Current values of variables, time of day and date can be entered in the
message text during this process. You can configure up to 255 different message
texts and store them in the memory submodule. You can also include in the
message text control commands for the printer. These are then executed during
printing (double-width type on/off).
ASCII mode
In ASCII mode, messages of up to 256 bytes in length can be transferred between
the CPU and a peripheral device connected to the CP 521. On receipt of a "Send
job" from the CPU, the CP 521 transfers the data from the PIQ (Process Image of
the Outputs) of the CPU to a Send mailbox until the message has been completely
transferred from the CPU. Then the CP 521 transfers the data autonomously from
the Send maibox to the peripheral device.
Data received from the peripheral device is first stored by the CP in a Receive
mailbox. From there it can be read into the PII (Process Image of the Inputs) with a
"Receive job" from the CPU.
Serial interface
The CP 521 has a RS-232-C (V.24) interface and a passive TTY interface.
The following are examples of peripheral devices that you can connect to the
serial interface of the CP 521:
• Keyboard
• Terminal
• CPU 944 (ASCII interface)
• CP 523
• another CP 521
• Printer with active TTY interface
• Printer with RS-232-C (V.24) interface
2-2
GWA4NEB8126030-02b
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