Network Configurations
© Siemens AG 2002 All Rights Reserved 6NH7811-0AA22
MD2 Modem (07/2002) 5-35
5.2.2 Point-to-Point with Fiber Optic Section, 2-wire Half-duplex
(RS485 Interface)
Fig. 5-11 shows a configuration for a point-to-point connection with fiber optic
section, 2-wire half-duplex. Both MD2 modems represent 2-wire terminal points
and are set to the "With RS485 interface" operating mode. In addition a fiber optic
section is connected through the RS485 interface of one of the MD2 modems.
All available baud rates and character recognition methods except for "MID off" can
be used in this configuration.
The DIL switch settings on the MD2 modem and the switch settings on the LTOP1
are the same at both terminal points (see Table 5-24).
Fig. 5-11 Network configuration:
Point-to-point with fiber optic section, 2-wire half-duplex (RS485 interface)
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