TIWAY I Overview 1-3
SIMATIC TIWAY I Series 500 NIM User Manual
TIWAY I network products provide a number of user-selectable options.
•Baud rates are selectable from 110 baud to 115.2 K baud.
•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:
•Host System Interfaces (including Host Adapters, Gateways, and
Network Control Modules)
•Siemens Programmable Controller Network Interface Modules (NIMs)
•UNILINK Secondary Adapters for interfacing non-Siemens products
to the TIWAY I Network
TIWAY I Options
System Block
Diagram