Siemens SIMATIC TIWAY 1 - Manual (Page 6)

THE UNILINK HOST ADAPTER
UNILINK HOST ADAPTER 1–5
USER MANUAL
D The adapter is configurable for a variety of applications needs and
includes multiple host computer support, allowing several host
computers to communicate with the secondary devices on the same
TIWAY I network.
D The adapter provides transaction statistics collection to aid network
performance tuning.
1.3 TYPICAL NETWORK APPLICATIONS
Figure 1–5 illustrates a typical single host network managing a process control
application. The host computer application directs the secondary devices
through the UNILINK Host Adapter and the TIWAY I network. Commands are
provided for downloading or uploading data from the host computer to the
secondary devices and for checking the status of an individual device.
Host
Computer
UNILINK
TIWAY I
UniLink Host Adapter ( MHU)
RS–232–C/RS–423–A
Host Interface Cable
Figure 1–5 Single Host Network