Siemens SINAUT ST7 - Multidrop Line with Fiber Optic Section, 2-Wire Half-Duplex (RS485 Interface)

Network Configurations
6NH7811-0AA22 © Siemens AG 2002 All Rights Reserved
5-40 MD2 Modem (07/2002)
5.2.4 Multidrop Line with Fiber Optic Section, 2-wire Half-duplex
(RS485 Interface)
Overview
Fig. 5-13 Network configuration:
Multidrop line with fiber optic section, 2-wire half-duplex (RS485 interface)
LTOP1
2-wire
dedicated line
MD2
RS485
MD2
RS485
Cable
6NH7700-2AR60
DTE
TIM3V/4
FOm FOm
DTE
TIM3V/4
RS485
Cable
6NH7700-2AR60
LTOP1
Overvoltage
protection
module
LTOP1
6NH9821
0BC11
LTOP1
2-wire
dedicated line
DTE
TIM3V/4
MD2
RS485
MD2
RS485
Cable
6NH7700-2AR60
Cable
6NH7700-2AR60
LTOP1
Overvoltage
protection
module
LTOP1
6NH9821
0BC11
RS485
FOm FOm
RS485RS485
DTE
TIM3V/4
Fiber optic
section
Fiber optic
section
Terminal points
Terminal points
FOm: fiber
optic module