Control Technologies Ethernet TCP/IP Adapter Module CTI 2572 Guide d'installation
CTI 2572
ETHERNET TCP/IP ADAPTER MODULE
TECHNICAL OVERVIEW
Version 1.1
CTI Part # 062-00156
'#("#'
2572 Technical Overview Manual 032698 $25
CTI 2572 Technical Overview Manual
Copyright 1993, 1998 Control Technology Inc.
All rights reserved.
This manual is published by Control Technology Inc., 5734 Middlebrook Pike, Knoxville, TN
37921. This manual contains references to brand and product names which are tradenames,
trademarks, and/or registered trademarks of Control Technology Inc. and Siemens AG. Other
references to brand and product names are tradenames, trademarks, and/or registered trademarks
of their respective holders.
DOCUMENT DISCLAIMER STATEMENT
Every effort has been made to ensure the accuracy of this document; however, errors do
occasionally occur. CTI provides this document on an "as is" basis and assumes no
responsibility for direct or consequential damages resulting from the use of this document. This
document is provided without express or implied warranty of any kind, including but not limited
to the warranties of merchantability or fitness for a particular purpose. This document and the
products it references are subject to change without notice. If you have a comment or discover
an error, please call us toll-free at 1-800-537-8398.
CTI 2572 Technical Overview Manual i
PREFACE
This Technical Overview Manual provides an introduction to CTI 2572 Ethernet TCP/IP
Adapter and to the networking specifications used with the module. The manual is intended for
those individuals who wish to gain a fundamental understanding of the 2572, Ethernet, TCP/IP,
and SIMATIC TI505 PLC command interfaces.
This manual is organized as follows:
Chapter 1 describes the features of the 2572;
Chapter 2 provides an overview of local area network topologies;
Chapter 3 reviews Ethernet physical media and data link formats;
Chapter 4 provides an overview of higher level local area network protocols;
Chapter 5 discusses TCP/IP and related protocols
Chapter 6 covers SIMATIC TI505 command protocols.
Individuals interested in more in-depth information regarding Ethernet and TCP/IP may wish to
read one of the several excellent technical books available on the subject. These include
Internetworking with TCP/IP Vol I, II, and III by Douglas E. Comer (Prentice-Hall, 1991),
TCP/IP and Related Protocols by Uyless Black (McGraw-Hill, 1992), and The Simple Book
Book by Marshall T. Rose (Prentice Hall, 1991).
Please refer to the CTI 2572 Installation and Operation Guide for specifications and additional
information about the 2572 message interface.
CTI 2572 Technical Overview Manual iii
TABLE OF CONTENTS
CHAPTER 1. INTRODUCTION..................................................................................................1
1.1 Description ...........................................................................................................................1
1.2 2572 Functions.....................................................................................................................2
CHAPTER 2. LOCAL AREA NETWORK OVERVIEW ............................................................3
2.1 Master/Slave vs. Local Area Networks................................................................................3
2.2 IEEE 802.5 (Token-Ring) ....................................................................................................4
2.3 Ethernet and IEEE 802.3......................................................................................................5
2.4 IEEE 802.4 (Token Bus) ......................................................................................................6
2.5 Future Technologies.............................................................................................................6
2.6 Summary ..............................................................................................................................7
CHAPTER 3. ETHERNET OVERVIEW......................................................................................9
3.1 ISO Reference Model...........................................................................................................9
3.2 Ethernet Topologies and Media - Physical Layer...............................................................10
3.3 Ethernet Protocol - Data Link Layer ..................................................................................13
3.4 Ethernet Addresses.............................................................................................................15
3.5 Requirement for Higher Level Protocols ...........................................................................15
CHAPTER 4. NETWORK PROTOCOLS ..................................................................................17
4.1 Connectionless vs. Connection Oriented Protocols ...........................................................17
4.2 Common LAN Protocols....................................................................................................18
CHAPTER 5. TCP/IP OVERVIEW ............................................................................................21
5.1 TCP/IP Components...........................................................................................................21
5.2 Internet Protocol.................................................................................................................22
5.3 Address Resolution Protocol (ARP) ..................................................................................24
5.4 User Datagram Protocol (UDP)..........................................................................................24
5.5 Transmission Control Protocol (TCP)................................................................................25
5.6 Berkeley Sockets................................................................................................................27
5.7 2572 TCP/IP Support .........................................................................................................27
CHAPTER 6. PLC COMMAND INTERFACE..........................................................................29
6.1 Non Intelligent Terminal Protocol.......................................................................................29
6.2 Task Codes..........................................................................................................................30
CTI 2572 Technical Overview Manual v
TABLE OF FIGURES
Figure 1 CTI 2572..........................................................................................................................1
Figure 2 Token Ring Topology.......................................................................................................4
Figure 3 Ethernet Topology (Coax)...............................................................................................5
Figure 4 10Base5 (Thick Coax) Topology ...................................................................................10
Figure 5 10Base2 (Thin Coax) Topology.....................................................................................10
Figure 6 10BaseT (Unshielded Twisted Pair) Topology..............................................................11
Figure 7 Fiber Optic Hub ............................................................................................................12
Figure 8 Ethernet Bridge .............................................................................................................12
Figure 9 Mixed Ethernet Media...................................................................................................13
Figure 10 802.3 Frame w/ SNAP Header....................................................................................14
Figure 11 TCP/IP Data Encapsulation........................................................................................21
Figure 12 Datagram.....................................................................................................................22
Figure 13 UDP Datagram ...........................................................................................................25
Figure 14 TCP Segment...............................................................................................................26
Figure 15 NITP Message Format ................................................................................................29
Ce manuel convient aux modèles suivants
1
Table des matières
Manuels Matériel réseau populaires d'autres marques
Matrix Switch Corporation
Matrix Switch Corporation MSC-HD161DEL Manuel utilisateur
B&B Electronics
B&B Electronics ZXT9-IO-222R2 Manuel utilisateur
Yudor
Yudor YDS-16 Manuel utilisateur
D-Link
D-Link ShareCenter DNS-320L Manuel utilisateur
Samsung
Samsung ES1642dc Instructions d'utilisation
Honeywell Home
Honeywell Home LTEM-PV Instructions de montage
