Siemens SINAUT ST7 - 5.2 Network Configurations with RS485

Network Configurations
6NH7811-0AA22 © Siemens AG 2002 All Rights Reserved
5-32 MD2 Modem (07/2002)
5.2 Network Configurations with RS485
The following table provides an overview of the network configurations that can be
built using the RS485 interface.
Note
Only half-duplex operating modes can be used in network configurations with the
RS485 interface.
Table 5-22 Overview of network configurations with RS485
Network Configuration Modem
Operating Mode
Transmission Type Section
Point-to-point
with RS485
interface
2-wire half-duplex 5.2.1
Point-to-point with
fiber optic section
with RS485
interface
2-wire half-duplex 5.2.2
Multidrop line
with RS485
interface
2-wire half-duplex 5.2.3
Multidrop line with
fiber optic section
with RS485
interface
2-wire half-duplex 5.2.4
Star network
with RS485
interface
2-wire half-duplex 5.2.5
Repeater
with RS485
interface
2-wire half-duplex 5.2.6