Connect Protocol Adapter To The Distribution Panel And Host Computer Or Automation System - Aprilaire 8800 System Installation Manual

CONNECT PROTOCOL ADAPTER TO THE DISTRIBUTION PANEL AND HOST COMPUTER
OR AUTOMATION SYSTEM
1. MAKE SURE THAT ALL SWITCHES ON THE DISTRIBUTION PANEL ARE OFF!
2. Use Category-5 wire to connect the main communication terminals on the Distribution Panel to the "Breakout Adapter" of the protocol adapter
(see FIGURE 8).
3. Connect the RS-232 cable from the protocol adapter to the computer or automation system. A 3 ft. RS-232 cable is provided.
Some computers use 25-pin connectors on serial ports, which requires a DB25 connector. A DB9 connector fits a 9-pin port. DB9 to DB25
transitions are available at most computer retail stores.
4. Power up the Protocol Adapter with the plug-in transformer provided. The "Power" LED on the Protocol Adapter should light up when power is
applied.
FIGURE 8 – Protocol Adapter Wiring
9VDC 500mA
AC PLUG-IN
TRANSFORMER
(PROVIDED)
COMPUTER OR AUTOMATION
SYSTEM WITH RS232 SERIAL
COMMUNICATION PORT
(NOT PROVIDED)
10
DO NOT
CONNECT
B- B+ A+ A-
B- B+ A+ A-
RS-485/422 BREAKOUT
ADAPTER (PROVIDED)
RS-485/422
DC +9V
TXD
RXD
POWER
RS-232
RS-232 3FT CABLE
(PROVIDED)
STRAIGHT THROUGH
CAT-5 NETWORK CABLE (NOT PROVIDED)
BLU/WHT
BLUE
ORANGE
ORG/WHT
PIN #1
DB9 RS-485 /422 CONNECTOR PIN-OUT
PIN # 1
A-
RS-485/422
Tx-
A+ A- B+ B-
REF REF
APRILAIRE MODEL 8819
DISTRIBUTION PANEL
OR MODEL 8800
COMMUNICATING
THERMOSTAT
RS-485/422
DC +9V
2 3 4 5 6 7 8 9
A+ B- B+
GND NC +9V NC NC
Tx+ Rx- Rx+