ACT SINGLE LINE RS485 CONVERTER Manual

12V DC
Power
Supply
0V
(300mA)
+12V
Pin Function
1 +12V
2 0V & Shield
3 B
4 A
NETWORK
ACT 2000
1. From the Controller keypad Enter Installer Menu->Communications and set a unique address
for each controller on the network. Set Direct Connect to No.
2. From ACTWin create a new database. In the database creation wizard check RS-485
Automatic Interface. This setting is also available from View->Options->Comms.
3. Connect to the controllers from ACTWin. The LED on the RS485 converter should blink
rapidly indicating communications in progress.
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Single Line RS485 Converter

RS-485 Bus

To next Controller
A
B
A B 0V
0V
DTR
RX
TX
0V
RS485 line may be up to 1km in length
and connect up to 32 controllers

Setup for Network Operation

RS-232
Network cable is single shielded twisted
pair: Belden 9501 or similar
A
B
0V
TX
RX
ACT 1000

ACTWin Software

Shield
A
B
0V
TX
RX
ACT 1000
120R Resistor
on last Controller.
18-00023