Siemens 500 NIM - Manual (Page 14)

TIWAY I Overview 1-3 SIMATIC TIWAY I Series 500 NIM User Manual
TIWAY I network products provide a number of user-selectable options.
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Baud rates are selectable from 110 baud to 115.2 K baud.
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TIWAY I devices can operate with modems in either full or half duplex
mode, synchronously or asynchronously.
•
Both NRZ and NRZI data encoding are available.
Figure 1-1 illustrates the basic system block diagram of a TIWAY I Network.
System components include:
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Host System Interfaces (including Host Adapters, Gateways, and
Network Control Modules)
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Siemens Programmable Controller Network Interface Modules (NIMs)
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UNILINK t Secondary Adapters for interfacing non-Siemens products
to the TIWAY I Network
TIWAY I Options
System Block
Diagram