Crestron electronic TPS-TPI - Manual (Page 10)

Touchpanel Interface Crestron Isys™ TPS-TPI
Installation/Setup
Identity Code
Every equipment and user interface within the network requires a unique identity
code (NET ID). These codes are assigned a two-digit hexadecimal number from 03
to FE. Refer to "Setup Menu" on page 9 for instructions on setting the unit's NET ID.
The NET ID of the unit must match the NET ID specified in the SIMPL Windows
program. Refer to "Programming with SIMPL™ Windows
 " on page 17 for a
sample.
Network Wiring
NOTE: When making wire connections, refer to the latest revision of the Cresnet
Network Interconnect Drawing (Doc. 5411). The document can be obtained from the
Downloads page (CABLES and MANUAL Libraries) of the Crestron website
(www. crestron.com). Search for the CRESNET.PDF files.
When calculating the wire gauge for a particular network run, the length of the run
and the power factor of each network unit to be connected must be taken into
consideration. If network units are to be daisy-chained on the run, the power factor
of each network unit to be daisy-chained must be added together to determine the
power factor of the entire chain. The length of the run in feet and the power factor of
the run should be used in the following resistance equation to calculate the value on
the right side of the equation.
Resistance Equation
R = Resistance (refer to table below).
L = Length of run (or chain) in feet.
PF = Power factor of entire run (or chain).
R < L x PF
40,000
Where:
The required wire gauge should be chosen such that the resistance value is less than
the value calculated in the resistance equation. Refer to the table after this paragraph.
Wire Gauge Values
RESISTANCE (R) WIRE GAUGE
4 16
6 18
10 20
15 22
13 Doubled CAT5
8.7 Tripled CAT5
NOTE: All network wiring must consist of two twisted-pairs. One twisted pair is
the +24V conductor and the GND conductor and the other twisted pair is the Y
conductor and the Z conductor.
NOTE: When daisy-chaining Cresnet units, strip the ends of the wires carefully to
avoid nicking the conductors. Twist together the ends of the wires that share a pin on
the network connector, and tin the twisted connection. Apply solder only to the ends
of the twisted wires. Avoid tinning too far up the wires or the end becomes brittle.
Insert the tinned connection into the Cresnet connector and tighten the retaining
screw. Repeat the procedure for the other three conductors.
6 • Touchpanel Interface: Crestron Isys™ TPS-TPI Operations Guide - DOC. 5855