2 WORLD LEADER IN ELECTRONIC SECURITY
Daisy chain wiring, which uses separate cable
segments between devices, is not recommended for
attaching Touch Trackers. Any break in the chain
could make all Touch Trackers inoperable or
inaccessible from the VM96 system.
Star Network Guidelines
The star network topology has legs running from a hub
(central connection) to the attached EIMs. The console,
a J-Box, or one of the domes or EIMs can serve as the
wiring point or "hub" for the star configurations, as
shown in Figures 3-17 and 3-18.
•
Each network link supports one star network, with
up to 32 devices. VM96 supports up to 8 Touch
Tracker controllers.
•
Only one hub is allowed for each star network.
•
A network hub supports a maximum of four legs.
•
The device at the hub is always unterminated.
•
A star network leg can attach unterminated daisy-
chained devices; however, the device at the end of
each leg must be terminated.
In Figure 4 the EIMs at the end of each leg must be
terminated; other EIMs are unterminated. Since the
console is the hub in this configuration, it is
unterminated. In Figure 5, the second EIM attached to
the console is the hub, and it is not terminated. The
VM96 console, and the EIMs at the end of each leg;
must be terminated. Other EIMs are daisy-chained and
unterminated.
Figure 4. Star Network Example #1
Figure 5. Star Network Example #2
Connecting Touch Tracker
Controllers
1.
Review the network design to determine which
Touch Tracker controllers (controller) must be
terminated. Set jumper E1 on EIMs requiring
termination (Figure 6).
2.
Mount each EIM on a wall or other surface within
3m (10') of its attached controller. Then route a
twisted-pair SensorNet cable from the VM96
console, past each EIM, until the last EIM is
reached. Do not cut the cable at each EIM.
3.
Referring to Figures 6 through 8:
a.
Wire each EIM’s power supply leads to pins 2, 3,
and 4 of a 5-pin compression connector (one
connector per EIM). Tighten the fastening screws to
secure the wires.
b.
Strip 25mm (1") of outer insulation from the
SensorNet cable at each EIM location. Then strip
12mm (.5") of insulation from each wire.
c.
Bend the two wires in the middle of the stripped
area. Insert one wire into pin 1, and the other into
pin 5 of the EIM's 5-pin compression connector.
Tighten both fastening screws to secure the wires.
d.
After attaching power and SensorNet cables, plug the
wired 5-pin connector into each EIM's WAG005
connector. See Figure 6.
e.
Connect the EIM SensorNet cable to the SensorNet
card or preceding SensorNet device. Then connect
the cable between the last EIM and the next
SensorNet device.
f.
Plug the modular interconnect cable into the RJ45
connector on the back of the Touch Tracker
controller. Use the strain relief, if available. Plug the
other end into the EIM.
Touch Tracker Controllers manufactured before
late-1996 do not have a strain relief.
T
TT
T
T - Terminated
EIMs
EIMs
Touch Tracker Controllers
VM96
Console
T
T
T
T
T - Terminated
EIMs
SensorNet
Cable
Hub
EIMs
Touch Tracker Controllers
VM96
Console
SensorNet
Cable
Hub
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