Setup And Adjustments - Johnson Controls S300 Series Hardware Installation Manual

S300-DIN-RDR2SA Module
S A
ETUP AND DJUSTMENTS
RS485 Connection
The following figure shows a portion of the top cover of the RDR2S-A module with
adjustable Wiegand, EOL, and address switches.
Wiegand EOL Switches:
switch SW2 position #2
and SW2 position #3
Note:
The Wiegand and EOL switches are ON (up) by factory default.
The address switches are OFF (down) by factory default.
Wiegand Switch
Wiegand Data0 and Data1 interface is enabled when the Wiegand/RS485 switch is
on (up).
Setting the End-of-Line Switches
Network devices at either end of the RS485 network must be set as network
terminated devices. This is done with the use of the End-of-Line (EOL) switches.
The RDR2S-A module has two End-of-Line switches: SW2 position #2 and SW2
position #3.
Turn them both on (up) or both off (down) according to the position of the
RDR2S-A module on the RS485 bus.
The RDR2S-A modules follow the same rules as other terminated devices. See the
following figure to determine the appropriate EOL setting for each RDR2S-A
module in your network.
24-10239-472 Rev. A
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2007 Johnson Controls, Inc.
Hardware Installation
Address
switches
15