Network Technologies CAT5 - Manual (Page 14)

9
Daisy-Chained Host Adapters
Up to 64 Host Adapters can be connected in a daisy-chain to create a series of CPUs that are controlled by a single user from a
User Station. The first Host Adapter is connected to the User Station via the "OUT" port. The additional Host Adapters in the
chain will have CAT5 cable going from their "OUT" port to another Host Adapter's "IN" port to enable communications between the
user and each CPU in the system, as shown in Figure 9. A Terminating Plug must be installed in the "IN" port of the last Host
Adapter in the daisy-chain.
NOTE: The installer must ensure that all CAT5 cable terminations between each Host Adapter are of the straight-through
type (pin 1 to pin 1, pin 2 to pin 2, etc.) and not crossover.
NOTE: The total length of the CAT5 cable from the User Station to the last Host Adapter in the daisy-chain must not
exceed 1000'.
Figure 9- Daisy-chained Host Adapters
Adding a Host Adapter to the Daisy-Chain
When adding a Host Adapter to a daisy-chain, whether at the end, or inside the chain (between two other Host Adapters
connected together), the administrator must follow some simple steps:
1.
Make sure the Host Adapter being connected to a CPU is the proper type for the CPU. Host Adapters are either HA-PS2
(for PS/2 CPUS), HA-USB (for USB CPUs), HA-SUN (for legacy SUN CPUs) or HA-RS (for serial-controlled devices).
2. Determine what name the Host Adapter will be identified as in the Host Adapter list. The PRIMUX will automatically name it
for the PN# (part number) found on the case of the Host Adapter. (This name can be changed later- page 29.)
3.
Follow the installation instruction on page 5 for Host Adapters and above for Daisy-Chained Host Adapters.
FYI: A Host Adapter can be added to the last Host Adapter in the chain, or between two existing Host Adapters.
4. Once the installation procedure is complete the connected CPU must be powered ON.
Note: The connected CPU must be powered ON at least once in order for the Host Adapter to be identified and registered
by the User Station as indicated in the Command Mode OSD list (for more on “Command Mode” see page 19).
5.
This Host Adapter will be auto-discovered by the PRIMUX. If the Host Adapter is new (unused), it will identify itself as
"PN:xxxxxxxx)" (where xxxxxxxx is the part number of the Host Adapter).
Note: If the Host Adapter has been previously connected and the name is still present in the Host Adapter list, it will still
have the name and settings it was originally configured with. To delete those settings in the PRIMUX, delete the Host
Adapter from the Edit Host Adapter menu (page 29).
Note: A PRIMUX in Matrix Mode (page 34) will not auto-discover a Host Adapter. To force a Host Adapter to be
discovered after connecting it to a PRIMUX Matrix Switch, press <F5> while in Command Mode.
6. The administrator should assign a unique name to the Host Adapter (see page 29)
7.
Only users with administrator rights will have access to the new Host Adapter unless the administrator assigns additional
users access (see page 32).
Once access controls have been set, the administrator should verify the security access to the new Host Adapter.
(Rear View)
CAT5 Cable
to User Station
Cable to CPU 1
(Rear View)
Cable to CPU 2
(Rear View)
Cable to CPU 3
(Rear View)
Cable to CPU 64
CAT5 Cable
CAT5 Cable
CAT5 Cable
CAT5 Cable
Terminating
Plug (Supplied)
Last Host
Adapter in
the daisy-chain