TCS QWL 3.1 Rev 3, Product Manual

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2800 Laura Lane • Madison, WI 53562 | 800.288.9383 • fax: 608.836.9044 | www.tcsbasys.com
4 5
WIRING
& SETUP
RS-485 Controller Network
Wiring & Setup
All controls connected to the network must be pro -
grammed using the same communication baud rate (9600
baud rate is recommended) as well as a unique communi -
cation address from 0 to 255, excluding 248. On controllers
with displays, this is accomplished using the keypad and
display, or using TCS Insight software, or by calling TCS
Technical Support . TCS Technical Support can access the
QWL 3 .1 Rev 3 Series Panel online and change the address
of a controller .
Use 22 AWG, twisted shielded 3-conductor cable for net -
work wiring . Network wiring should start at one controller
and go to the next and then go to the next, and so on until
the final controller is reached . Wiring is such that all “A”
wires are connected to “A” wires, all “B” wires are connect -
ed to “B” wires, and all “REF” wires are connected to “REF”
wires .
A 120 Ω terminating resistor should be placed at each of
the two ends of the network directly across the “A” and
“B” wires. If the QWL 3.1 Rev 3 Series Panel will be at one
end of the network, hard wire a 120 Ω terminating resis -
tor across the “A” and “B” terminals at the QWL 3 .1 Rev 3
Series Panel (See 1 below).
If the QWL 3.1 Rev 3 Series Panel will be in the middle of
the network, do not wire in the terminating resistor on the
QWL 3.1 Rev 3 Series Panel terminal block (See 2 below).
Finally, connect one end (ideally the furthest end from
A
B
REF
Shield
A
B
REF
A
B
REF
Earth Ground
Only at one end
Drain
Wire
Last in Daisy Chain
120 Ω
Terminating
Resistor
...
COM 1
REF REF A A B B
Drain
Wire
..
.
120 Ω
Terminating
Resistor
A
B
REF
A
B
REF
A
B
REF
.
.
.
Last in Daisy Chain
Shield
Last in Daisy Chain
Earth Ground
Only at one end
120 Ω
Terminating
Resistor
A
B
REF
A
B
REF
A
B
REF
Shield
Drain
Wire
COM 1
REF REF A A B B
120 Ω
Terminating
Resistor
1
2
3
3
4
4
4
To RS-485 port on
panel board (see
panel wiring)
The QWL 3 .1 Rev 3 Series Panel at
end of the network .
The QWL 3 .1 Rev 3 Series Panel in
the middle of the network .
1
3
2
Shielded, twisted 3-conductor communica -
tions wiring with one end earth grounded .
(120 Ω balancing resistors provided.)
Can use up to the total of 64 controllers .
For more controllers, will need to add
another QD1010 to the QWL 3 .1 Rev 3
Series Panel .
4
NOTES:
- If using more than 64 controllers, use
additional serial ports or additional
QD1010 adapters .
- Each controller must use the same
baud rate and be assigned a unique
address .