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Installation
QD2040 Power and Communication Connections
To Controllers
COM 1
REF
B
POWER
(12VDC)
To Wall Outlet
Power and Communication Connections
RS485 Network Wiring
All controllers connected to the network must be programmed with the same communication baud rate as well as a
unique communication address from 0 to 255, excluding 248. On controllers with displays, this can be done from the
controller using its keypad and display, by using TCS Insight software, or by calling TCS Technical Support (800.288.9383,
ext. 2). TCS Technical Support can access the QD2040 online and change the address of a controller.
Use 22 AWG, twisted shielded three-conductor or two-conductor cable for network wiring. Network wiring should start
at one controller and go to the next and then go to the next, until the final controller is reached. Wiring is such that all "A"
wires are connected to "A" wires, all "B" wires are connected to "B" wires, and all "REF" wires are connected to "REF" wires.
NOTE:
"A" refers to the negative (–) RS485 connection and "B" refers to the positive (+) RS485 connection.
A 120Ω terminating resistor should be placed at each of the two ends of the network directly across the "A" and "B" wires.
• If the QD2040 will be at one end of the network, hard-wire a 120 Ω terminating resistor across the "A" and "B" termi-
nals of the QD2040 (See
If the QD2040 will be in the middle of the network, do not wire in the terminating resistor on the QD2040 terminal block.
Connect one end (ideally, the end furthest from the QD2040) of the shield wire of the network wiring to earth ground.
NOTE:
If you encounter time-out errors, contact TCS Technical Support (800.288.9383, ext. 2).
4
4
Rx/Tx Activity LEDs
COM 2
REF
A
A
B
USB PORT 2
DP
USB PORT 1
Monitor Ports
(Admin Only)
To RS-485 Converter (QD1010)
"Three-Wire Network Wiring" on page
2800 Laura Lane
•
Middleton, WI 53562
HDMI
CLOUD
LOCAL
ETHERNET 1
ETHERNET 2
Local
Management
Port
To Internet
5).
|
800.288.9383
|
www.tcsbasys.com
USB PORT 4
USB PORT 3
Not Used
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