Network Configurations With Rs232 - Siemens SINAUT ST7 Operating Instructions Manual

Network Configurations
Introduction
The MD2 modem can be used to build a variety of network configurations.
These include the following types of networks:
• Point-to-point
• Multidrop line
• Star network
• Repeater
In the following sections these network configurations are described with graphic
examples and the corresponding DIL switch settings on the individual modems are
explained along with the switch settings on the LTOP overvoltage protection
modules.
5.1

Network Configurations with RS232

The following table provides an overview of the network configurations that can be
built using the RS232 interface.
Table 5-1
Network
Configuration
Point-to-point
Point-to-point
Multidrop line
Multidrop line
Star network via
integrated two-way
transformer
Star network via
external multiple
transformer
Star network via
external multiple
transformer
Repeater
Repeater
6NH7811-0AA22
5-2
Overview of network configurations with RS232
Modem Operating
Mode
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Repeater
Repeater
Transmission
Type
4-wire full-duplex
2-wire half-duplex
4-wire full-duplex
2-wire half-duplex
2-wire half-duplex
2-wire half-duplex
4-wire full-duplex
4-wire full-duplex
2-wire half-duplex
© Siemens AG 2002 All Rights Reserved
MD2 Modem (07/2002)
Section
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.1.8
5.1.9