Setup guide

Chapter 2 System Objects
Object Reference Manual 3-86 www.Automationdirect.com
Enabling Automatic redundant media instructs the Unilink Host Adapter
to attempt communications over a redundant TIWAY network to any
secondary it loses communications with.
The TIWAY I Network Settings configure the communication
parameters for the TIWAY network. This network runs between the Unilink
Host Adapter and its secondaries. The Lookout default network settings
correspond to the default NIM settings as shipped from Siemens. See your
TIWAY documentation to modify any of these parameters.
Unilink PC Adapter
Because the Unilink PC Adapter is an internal card, it eliminates the
19200 baud serial bottleneck and replaces it with the 8 MHz PC ISA bus
speed. Therefore, the performance gains over the Unilink Host Adapter
and Local port settings can be substantial.
If Unilink PC Adapter is selected, you must specify the Card to be used
and the NIM (Network Interface Module) address as set at the PLC. You
should also configure several settings on the Unilink PC Adapter by
selecting the Configure PCA… button.
The settings in this dialog box are globally applied to all PLCs on the
specified TIWAY network (each network requires a separate card).
Therefore, it is only necessary to configure each Unilink PC Adapter one
time—this step need not be repeated every time a new Tiway object is
created.