Siemens SIMATIC NET CP 243-1 IT User manual

SIMATIC NET
CP 243-1 IT
Communications Processor
for Industrial Ethernet and
Information Technology
Technical Manual
Foreword
Product Information
Table of Contents
List of Figures
List of Tables
Introduction
Features and Functions
Installation and Comissioning
Configuration
Programming
Diagnosis
Appendix A: Technical Data
Appendix B: Example
Appendix C: Timeouts
03/2003
J31069-D0429-U001-A0-7618
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Copyright © Siemens AG 2003 All rights reserved
Passing on and reproduction of this document, or utilization and
revelation of its contents is prohibited without express permission.
Violators will be prosecuted. All rights reserved, particularly in case a
patent is granted or a utiliy model is registered.
Siemens AG
Automation & Drives
Postfach 4848
D-90327 Nuernberg
Exclusion of liability
Although we have checked the contents of this publication for
correspondence to the hardware and software described therein, we
cannot guarantee total agreement. The information in this publication is
reviewed at regular intervals and necessary corrections included in the
next releases.
Your suggestions are welcome.
Subject to change without prior notice
Siemens-Aktiengesellschaft J31069-D0429-U001-A0-7618

Classification of safety information
This document contains information which you must adhere to for your own per-
sonal safety and to avoid property damage. This information is highlighted with a
warning triangle and graded by degree of danger.
!
Danger
means that death or severe injury will occur if appropriate precautions are not
taken.
!
Warning
means that death or severe injury may occur if appropriate precautions are not
taken.
!
Caution
with a warning triangle means that minor injury may occur if appropriate precautions
are not taken.
Caution
without a warning triangle means that property damage may occur if appropriate
precautions are not taken.
Attention
means that an undesired result or state may occur if appropriate precautions are
not taken.
Note
indicates important information on the product, its handling or the particular part of
the documentation requiring special attention. Possible benefits make it advisable
to adhere to these recommendations.
Brands
SIMATIC, SIMATIC NET, SINECand SIMATIC NET Networking for Industry®
are registered brands of Siemens AG.
The other designations in this publication may be brands whose use by third par-
ties for their own purposes may violate the rights of the owners.

Safety information on your product
Before you begin using the product described here, it is essential to read and ad-
here to the following safety information.
Qualified personnel
Only qualified personnel may commission and operate this device. For the purpose
of the safety notes in this manual, qualified personnel are those persons who are
authorized to commission, ground and tag devices, systems and electrical circuits
according to the standards of safety technology.
Intended use of hardware products
Adhere to the following information on the intended use of hardware products.
Caution
The device may only be used for the technical applications described in the cata-
log and only with products of Siemens or recommended by Siemens or devices
and components of other manufacturers which have been approved by Siemens.
Correct, safe operation of the product depends on correct transportation, correct
storage, installation and mounting as well as careful operator control and mainte-
nance.
Before you begin using the included sample program or your own programs, make
sure that no injury or property damage to man or machine can occur on the run-
ning systems.
EG note: Commissioning is prohibited until it can be determined that the machine
in which these components is to be installed meets the specifications of guideline
89/392/EWG.

03/03 Foreword
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Foreword
Purpose of this manual
This manual will be helpful when you use your CP 243-1 IT communications proc-
essor. It provides you with information on how to communicate with this communi-
cations processor via Industrial Ethernet and how to use the Information Technol-
ogy functions.
Prerequisites
A knowledge of this manual as well as the manual on SIMATIC S7-200 program-
mable controllers is required for understanding the functions of the CP 243-1 IT. In
addition, you will need a basic knowledge of such topics as TCP/IP, FTP, E-Mail,
HTML, Web Browser and Java.
Target group
This manual is written for engineers, programmers, commissioning personnel and
maintenance personnel with a general knowledge of automation and communica-
tion systems as well as user interface systems.
Sample program
This manual contains a sample program which gives you an example of how to
program your CP 243-1 IT. This program was prepared with STEP 7-Micro/WIN 32
V3.2.3 and will run on an S7-200 CPU (type 224). If you want to run this sample
program on another S7-200 CPU, you may have to adjust this CPU to the configu-
ration expected by our program.

Product Information 03/03
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Product Information
Address label: MAC address
The CP 243-1 IT is delivered with a permanently set MAC address. This MAC ad-
dress is shown on a label underneath the upper covering flap of the device.
MLFB number, scope of delivery
Product Name MLFB Scope of Delivery
CP 243-1 IT 6GK7 243-1GX00-0XE0 CP, documentation on CD-ROM

03/03 Table of Contents
CP 243-1 IT
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Table of Contents
Foreword ........................................................................................................... 5
Product Information ......................................................................................... 6
List of Figures................................................................................................. 10
List of Tables .................................................................................................. 11
1Introduction ............................................................................................ 13
2Features and Functions......................................................................... 15
2.1 Overview ............................................................................................................ 15
2.2 S7 Communication via Industrial Ethernet......................................................... 17
2.2.1 Preliminary Comments....................................................................................... 17
2.2.2 Types of Communication ................................................................................... 18
2.2.3 Communication Partners ................................................................................... 18
2.3 IT Communication .............................................................................................. 23
2.3.1 Preliminary Remarks.......................................................................................... 23
2.3.2 Types of Communication ................................................................................... 24
2.3.3 E-Mail ................................................................................................................. 25
2.3.4 FTP Server......................................................................................................... 27
2.3.5 FTP Client .......................................................................................................... 29
2.3.6 HTTP Server ...................................................................................................... 33
2.4 File System ........................................................................................................ 37
2.5 User Administration............................................................................................ 39
2.6 Security .............................................................................................................. 41
2.6.1 Configuration...................................................................................................... 41
2.6.2 Data Security...................................................................................................... 42
2.6.3 Communication Security .................................................................................... 42
2.7 Connections ....................................................................................................... 43
2.8 Indicators: Front LEDs ....................................................................................... 44
3Installation and Commissioning ........................................................... 47
3.1 Dimensions for Installation in a Control Panel ................................................... 50
3.2 Dimensions for Installation on a DIN Rail .......................................................... 50
3.3 Installation in a Control Panel ............................................................................ 51
3.4 Installation on a Standard DIN Rail.................................................................... 52
3.5 Replacement Parts............................................................................................. 53

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3.6 Demounting the CP 243-1 IT ............................................................................. 54
4Configuration.......................................................................................... 55
4.1 Possible Configurations ..................................................................................... 55
4.2 Value Ranges of the Configuration Data ........................................................... 57
4.2.1 IP Addresses...................................................................................................... 57
4.2.2 Subnet Mask ...................................................................................................... 57
4.2.3 TSAPs ................................................................................................................ 57
4.2.4 Ports................................................................................................................... 58
4.2.5 E-Mail Tags ........................................................................................................ 58
4.3 Configuration of a CP 243-1 IT with STEP 7 Micro/WIN 32 ............................. 60
4.3.1 Basic Configurations .......................................................................................... 61
4.3.2 Configuration of User Administration ................................................................. 65
4.3.3 Configuration of the E-Mail Functions................................................................ 65
4.3.4 Configuration of the FTP Functions ................................................................... 66
4.3.5 Conclusion of Configuration............................................................................... 67
4.4 Additional Ways to Configure a CP 243-1 IT ..................................................... 67
4.4.1 Assigned System Marker Area (SM Area)......................................................... 69
4.4.2 Structure of Configuration Data Block (CDB) .................................................... 70
4.4.3 Structure of the Network Parameter Block (NPB).............................................. 74
4.4.4 Structure of the Network Data Block (NDB)....................................................... 74
4.4.5 Structure of the Internet Data Block (IDB) ......................................................... 76
4.4.6 Structure of the Configuration File for User Administration (.udb File) ............. 79
4.4.7 Structure of the Configuration File for the E-Mail Client (.edb File).................. 82
4.4.8 Structure of the Configuration File for the FTP Client (.fdb File) ....................... 85
4.5 Configuration of a Communication Partner with STEP 7................................... 89
4.6 Reaction of the CP 243-1 IT to Configuration Errors ......................................... 93
5Programming.......................................................................................... 95
5.1 ETHx_CTRL....................................................................................................... 96
5.2 ETHx_CFG......................................................................................................... 98
5.3 ETHx_XFR ......................................................................................................... 99
5.4 ETHx_EMAIL ................................................................................................... 101
5.5 ETHx_FTPC..................................................................................................... 103
6Diagnosis .............................................................................................. 107
6.1 Diagnostic Capabilities..................................................................................... 107
6.2 Error Messages of the CP 243-1 IT ................................................................. 111
6.2.1 Error Messages in Byte Format ....................................................................... 112
6.2.2 Error Messages in Word Format...................................................................... 116
6.3 Error Messages of the Test Routine for E-Mails .............................................. 119

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Appendix A Technical Data ...................................................................... 121
Appendix B Example ................................................................................. 123
Appendix C Timeouts................................................................................ 131
Abbreviations................................................................................................ 133

List of Figures 09/02
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List of Figures
Fig. 1 System overview ..................................................................................................... 19
Fig. 2 Overview of the IT functions.................................................................................... 23
Fig. 3 Connections ............................................................................................................ 43
Fig. 4 Front with the LEDs................................................................................................. 44
Fig. 5 Space requirements during installation ................................................................... 49
Fig. 6 Dimensions for installation in a control panel.......................................................... 50
Fig. 7 Dimensions for installation on a DIN rail ................................................................. 50
Fig. 8 Screen "Properties – S7 connection" ...................................................................... 90
Fig. 9 Calling the subprogram ETHx_CTRL...................................................................... 96
Fig. 10 Call of the subprogram ETHx_CFG ........................................................................ 98
Fig. 11 Call of the subprogram ETHx_XFR....................................................................... 100
Fig. 12 Call of the subprogram ETHx_EMAIL ................................................................... 102
Fig. 13 Call of the subprogram ETHx_FTPC .................................................................... 104

03/03 List of Tables
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List of Tables
Table 1 Predefined HTML pages ......................................................................................... 36
Table 2 Directory structure of the CP 243-1 IT ................................................................... 38
Table 3 Length of the user names and passwords .............................................................. 40
Table 4 Function of the individual LEDs............................................................................... 45
Table 5 Examples of formatting instructions for placeholders in e-mails............................. 59
Table 6 System marker area ................................................................................................ 69
Table 7 Structure of the CDB ............................................................................................... 73
Table 8 Structure of the NPB ............................................................................................... 74
Table 9 Structure of the NDB ............................................................................................... 76
Table 10 Configuration of the read/write jobs ........................................................................ 76
Table 11 Structure of the IDB................................................................................................. 78
Table 12 Structure of the configuration file for user administration........................................ 79
Table 13 Structure of the parameter record of a user ............................................................ 80
Table 14 Structure of the configuration file for the e-mail client............................................. 83
Table 15 Structure of the configuration file for the FTP client................................................ 85
Table 16 Structure of the parameter record for an FTP job ................................................... 87
Table 17 Input parameters (ETHx_CTRL) ............................................................................. 96
Table 18 Return parameters (ETHx_CTRL) .......................................................................... 97
Table 19 Input parameters (ETHx_CFG) ............................................................................... 98
Table 20 Return parameters (ETHx_CFG) ............................................................................ 99
Table 21 Input parameters (ETHx_XFR) ............................................................................. 100
Table 22 Return parameters (ETHx_XFR)........................................................................... 101
Table 23 Input parameters (ETHx_EMAIL).......................................................................... 102
Table 24 Return parameters (ETHx_EMAIL) ....................................................................... 102
Table 25 Input parameters (ETHx_FTPC) ........................................................................... 104
Table 26 Return parameters (ETHx_FTPC) ........................................................................ 105

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Table 27 Addressing of global errors and module information ............................................ 108
Table 28 Layout of the NPB memory area........................................................................... 109
Table 29 Error messages in byte format .............................................................................. 115
Table 30 Error messages in word format ............................................................................. 118
Table 31 Error messages for test routine for e-mails ........................................................... 119
Table 32 Technical data ....................................................................................................... 122
Table 33 Timeouts on Ethernet............................................................................................ 131
Table 34 Timeouts on the backplane bus ............................................................................ 132

03/03 Introduction
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1 Introduction
Definition and application
The CP 243-1 IT is a communications processor designed for use in an S7-200
programmable controller. It permits an S7-200 system to be connected to Industrial
Ethernet (IE). This makes communication via Ethernet possible even in the lower
performance class of the S7 product family. Using STEP 7 Micro/WIN 32, an S7-
200 can be configured, programmed and diagnosed via Ethernet even at a geo-
graphical distance. Using a CP 243-1 IT, an S7-200 can communicate via Ethernet
with another S7-200, S7-300 or S7-400 controller. Communication with an OPC
server is also possible.
The IT functions of the CP 243-1 IT form the basis for monitoring and, if necessary,
also manipulating automation systems with a Web browser from a networked PC.
In addition, diagnostic messages can be e-mailed from a system. Using the IT
functions, it is very easy to exchange entire files with other computer and controller
systems.
Industrial Ethernet is the network for the process control level and the cell level of
the SIMATIC NET open communication system. Physically, Industrial Ethernet is
an electrical network based on shielded, coaxial lines, twisted pair cabling and an
optical network of fiber optic conductors. Industrial Ethernet is defined by the in-
ternational standard IEEE 802.3.
Continuous communication in the industrial area - worldwide
Industrial Ethernet is embedded in the SIMATIC NET concept which permits con-
tinuous networking of process control level, cell level and field level with
PROFIBUS and AS Interface. The IT functions, characterized by their worldwide
uniform standards and protocols, serve as the bridges between the world of indus-
trial controllers and the typical PCs used by the office world of today.
Compatibility
The CP 243-1 IT (6GK7 243-1GX00-0XE0) described here can be used for S7
communication. The CP 243-1 IT can be connected to various types of S7-200
CPUs (222, 224, 226 and 226XM).
• CPU 222 rel. 1.10 or higher
• CPU 224 rel. 1.10 or higher
• CPU 226 rel. 1.00 or higher
• CPU 226XM rel. 1.10 or higher
A maximum of 2 expansion modules can be installed on the CPU 222. In contrast,
up to 7 expansion modules can be connected to CPUs 224, 226 and 226XM.
The CP 243-1 IT is fully compatible with the CP 243-1. This means that user pro-
grams which were written for the CP 243-1 can also be run on a CP 243-1 IT.

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Caution
Only one CP 243-1 or one CP 243-1 IT may be connected per S7-200 CPU. If ad-
ditional CP 243-1 or CP 243-1 IT processors are connected, the S7-200 system
may no longer function correctly.
The software of the CP 243-1 IT is compatible with the following standards.
• S7 XPUT/XGET and S7 READ/WRITE
• S7-200 I/O bus specification
• HTTP 1.0 in acc. w. RFC1945
• FTP in acc. w. RFC959
• SMTP in acc. w. RFC2821/2822 (only functions for sending e-mails)
Configuration
The CP 243-1 IT is configured with STEP 7 Micro/WIN 32 starting with version
3.2.3. The standard CP 243-1 IT is delivered with a fixed MAC address. IP ad-
dress and subnet mask must be configured or obtained from a BOOTP server.
Programming
Use the Internet wizard of STEP 7 Micro/WIN 32 to program communication in the
user program (see chapters 4 and 5).
Configuration
The firmware of the CP 243-1 IT is programmed on flash memory during produc-
tion and is stored there permanently. System states or dynamic variables which
occur during operation of the CP 243-1 IT are not stored permanently.
Configuration of the CP 243-1 IT is divided into Industrial Ethernet and IT services.
The Ethernet configuration is retentively stored in the DB of the S7-200 CPU. Dur-
ing startup, the CP 243-1 IT reads the configuration from the CPU and initializes it-
self accordingly.
The configuration of the IT services is stored in the file system of the CP 243-1 IT
in the form of one configuration each for user administration, FTP client and e-mail
service. These configuration files are continuously evaluated during running opera-
tion.

03/03 Features and Functions
CP 243-1 IT
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2 Features and Functions
2.1 Overview
The CP 243-1 IT offers the following functions.
• S7 communication
− Performance data communication via Industrial Ethernet. Communication
is based on standard TCP/IP.
− Ethernet access via RJ45 socket
− Easy connection to an S7-200 system via the S7-200 backplane bus
− Permits flexible and distributed automation structure
− Basis for simple further processing and archivation of process data
− Permits simultaneous communication with up to eight S7 controllers
− Offers a link to S7-OPC
− Simple network administration
− S7 communication services "XPUT/XGET" as client and server
− S7 communication services "READ/WRITE" as server
− For Keep Alive connection checks, a time can be configured for all TCP
transport connections with active and passive partners.
• IT communication
− File system for permanent storage of Web and configuration files on the
CP 243-1 IT
− SMTP client for sending e-mails. In addition to pure text information, em-
bedded variables can also be transmitted. The current value of such a
variable is not determined until the e-mail is sent.
− Configuration of up to 32 e-mails with up to 1024 characters each
− FTP server for access to the file system of the CP 243-1 IT
− FTP client for exchanging data with an FTP server
− Configuration of up to 32 FTP client operations
− The FTP client function supports the commands READ, WRITE and DE-
LETE.
− Access of the FTP client to the FTP server of the CP 243-1 IT
− HTTP server for the read and write access to process and status data of
the S7-200 system via up to four Web browsers at one time
− Prepared HTML pages for diagnosis of the S7-200 system and for access
to process variables
− Sending a test e-mail via a prepared HTML page

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− Storage of own HTML pages and Java Applets in the file system of the CP
243-1 IT
− Provision of Java Applets and Beans for development of own HTML pages
and Java Applets
− User administration for up to 8 users with user-specific granting of rights for
access to files, status information and process variables.
• Configuration
− Programming, configuring and diagnosing an S7-200 system from a geo-
graphical distance (e.g., program upload and download or status indica-
tions) via Industrial Ethernet and STEP 7 Micro/WIN 32
− Exchanging modules possible without having to program/configure the
Ethernet functions again (Plug & Play). Since the configuration of the IT
functions is stored on the CP 243-1 IT, this must be loaded again to the
module when the CP 243-1 IT is replaced.
• Watchdog timer
The CP 243-1 IT is equipped with a watchdog circuit. The watchdog starts each
time the CP 243-1 IT boots. The watchdog monitoring time is usually 5 seconds.
Tolerances due to components may increase this time to 7 seconds. If watch-
dog monitoring triggers, the CP 243-1 IT is automatically reset. This restarts the
CP 243-1 IT. During this time, the CP 243-1 IT reports the "Parity Error" to the
S7-200 CPU. Handling such an error is described in the documentation of
STEP 7 Micro/WIN 32.
• Ability of preset MAC addresses (48-bit value) to be addressed
The MAC address is assigned to each CP 243-1 IT at the plant. The MAC ad-
dress is located on an adhesive plate under the upper front flap. An IP address
can be assigned to the CP 243-1 IT via the preset MAC address using BOOTP.

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2.2 S7 Communication via Industrial Ethernet
2.2.1 Preliminary Comments
S7 communication via Industrial Ethernet permits program-controlled communica-
tion via communication SFBs/FBs and configured S7 connections. The CP 243-1
IT supports S7 communication via Industrial Ethernet with the XPUT/XGET and
READ/WRITE services. Up to 212 bytes of user data can generally be transmitted
per job. If the CP 243-1 IT is run as server, up to 222 bytes of user data can even
be transferred in read jobs.
The CP 243-1 IT supports a maximum of eight S7 communication channels to cli-
ents or servers on one or more geographically removed communication partners.
The CP 243-1 IT works on the client/serve principle for each channel. Only one job
at a time per channel is accepted, processed and answered with a positive or
negative response. Not until a response has been sent does the CP 243-1 IT ac-
cept a new job.
If the CP 243-1 IT receives several jobs on a channel configured as server, only
the first job is processed. The subsequent jobs are ignored until the end of the
transaction (i.e., until a response is sent). The CP 243-1 IT has no channel-specific
job administration and does not buffer jobs.
Prerequisites for communication with a PC/PG
As before, a PG/PC can access the S7-200 CPU via the PPI interface. In addition,
this access may take place via the CP 243-1 IT via Ethernet. The following prereq-
uisites must be fulfilled for this.
• An Ethernet card is installed and configured on the PG/PC and an Ethernet or
TCP/IP connection to the CP 243-1 IT exists (via routers, firewalls, and so on).
• STEP 7 Micro/WIN 32 (starting with version 3.2.3) is installed on the PG/PC.
• The CP 243-1 IT has a valid address. This address may be permanently speci-
fied in the configuration or obtained from a BOOTP server.
At this time, only one STEP 7 Micro/WIN 32 can communicate via a CP 243-1 IT
with the S7-200 CPU. Use of the Ethernet interface is mandatory for configuration
of the IT services.

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2.2.2 Types of Communication
The CP 243-1 IT has three types of S7 communication relationships which can be
used individually and in combination.
1. Coupling with STEP 7-Micro/WIN 32
2. Coupling with other, geographically remote components of the SIMATIC S7
family
3. Coupling with OPC-based applications on a PC/PG
2.2.3 Communication Partners
• S7-200 CPU with CP 243-1 or CP 243-1 IT
• S7-300 CPU with CP 343-1 or CP 343-1 IT
• S7-400 CPU with CP 443-1 or CP 443-1 IT
• PG/PC with OPC server
• PG/PC with STEP 7 Micro/WIN 32
The STEP 7 HW-Config program shows you the types of S7-300 CPUs and S7-
400 CPUs which support the S7 protocol XPUT/XGET (i.e., can communicate with
the CP 243-1 IT). When you select an S7-300 or S7-400 CPU in the catalog box
there, this CPU must support the function "S7 communication."
With systems from the S7-300 family, an XPUT/XGET client can only be used with
a related communications processor starting with version 1.1. You will find the ver-
sion of your communications processor in the MLFB number, among others. If you
are using a CP 343-1, the MLFB number must contain the character string "EX11"
or higher.
Always remember that the CP 243-1 IT does not support pure ISO connections.
Since the CP 443-1 ISO has neither TCP/IP nor RFC 1006, it is not able to com-
municate with a CP 243-1 IT.
Caution
Only one CP 243-1 or one CP 243-1 IT may be connected to an S7-200 CPU. If
additional SP 243-1 or CP 243-1 IT processors are connected, the S7-200 system
may not function correctly.
Note
Concerning communication with an OPC server, remember that the CP 243-1 IT
does not support automatic querying of the objects (e.g., DBxx, and so on) on the
S7-200.
A CP 243-1 IT can only communicate with an OPC server when this server sup-
ports the two S7 services READ and WRITE.

03/03 Features and Functions
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Overview
Micro/WIN
CPU 22x
CP 243-1/IT
...
CPU 3xx
CP 343-1/IT
......
CPU 4xx
CP 443-1/IT
......
OPC-Server
OPC-Client
S7-200 S7-300 S7-400 PC
PC
Ethernet
xput / xget read / write
max. 8 x
1 x
CPU 22x
CP 243-1 IT
...
S7-200
BOOTP-
Server
PC
Fig. 1 System overview
A CPU 22x with CP 243-1 IT can communicate both with other S7-200, S7-300
and S7-400 systems and with an OPC server. A maximum of 8 connections (see
Fig. 1) are possible in addition to a STEP 7 Micro/WIN connection.
Configuring and programming connections for S7 stations
To configure communication between an S7-200 and an S7-300, S7-400 or an
OPC server, you will need both STEP 7 Micro/WIN 32 (starting with version 3.2.3)
and STEP 7 (starting with version 5.1 with service pack 3 or higher, with NCM for
Industrial Ethernet).
The S7-200 station is configured and programmed with STEP 7 Micro/WIN 32. You
will need STEP 7 with NCM for Industrial Ethernet to configure and program the
S7-300 or S7-400 or the OPC server.

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Data communication via Industrial Ethernet
Data communication via the CP 243-1 IT is based on Ethernet and is thus not de-
terministic (i.e., specific response times are not guaranteed). 10 and 100-Mbit net-
works are supported in full and half-duplex.
In addition, the CP 243-1 IT supports the auto-negotiation function for automatically
negotiating the operating mode and the transmission speed to be used. The mode
and the transmission speed can also be permanently specified by the user when
configuring the CP 243-1 IT. If the CP 243-1 IT doesn't have a valid configuration, it
always uses "auto-negotiation" mode.
Note
Auto-negotiation mode only works when all connected network components sup-
port this mode.
Industrial Ethernet and TCP/IP do not allow time-deterministic data flow. There is
no way to know when a geographically remote CPU will execute the requested
jobs. The responses of the geographically removed CPU are asynchronous to the
CPU cycle of the local S7-200 CPU. This is why TCP/IP-based communication is
only partly suitable for use in widespread applications with time requirements (e.g.,
control circuits, cyclic precisely timed scanning).