Emerson XJAL-020Z-CFV-012 Manual page 53

technical bulletin
Network Connection to E2
Connecting an XJ Scroll Condenser to an E2
unit requires the E2 to be version 2.84 or
above. Contact Retail Solutions for upgrade
information if the controller is a version
before 2.84.
An E2 has up to three COM ports that can be
assigned for XJ Scroll board communication
(COM2, an RS485 port on the E2 power
interface board, and COM4 and COM6,
which are external RS485 cards). COM ports
can only be used for one function; in other
words, if COM2 is set up as the I/O network,
you cannot connect XJ Scroll boards to
COM2. If COM2 is not used for XJ Scroll
boards, ensure your E2 is equipped with an
RS485 COM Card (P/N 637-4890) and config-
ured in E2 General Services (
+
press , Serial tab) to enable COM4.
Connect the network cable to the three-terminal connector on the COM port that has been
configured as XJ Scroll.
When the E2 is at one end of the daisy chain, terminate the E2 with all three jumpers in the
terminated (UP) position.
E2 Setup of XJ Scroll Condensers
Set Up Network Ports
Before communicating to an XJ Scroll, the port on the E2 that has the cable connected to the
XJ Scroll Condenser must be configured to use the XJ Scroll Condenser.
1. Log in to the E2 with Level 4 access.

2. Press
 
3. Press +
Document Part # 026-4909 Rev 1 20-OCT-2011
©2011 Emerson Climate Technologies, Inc. This document may be photocopied for personal use.
Visit our website at http://www.emersonclimate.com/ for the latest technical documentation and updates.
Installation Instructions: XJ Scroll Condenser to E2


followed by - General Controller Info.
to open the Serial tab of the General Controller Info setup screens:
E2 PIB COM PORT ASSOCIATIONS
E2 Enclosure (Right Side)
E2 Modem/Expansion
COM Card Mounted
Above PIB
COM3
Plug-In
Modem
Card
RS485 COM Card
(2 Connectors)
COM4
Serial Device
RS485 COM Port
(2 Connectors)
COM2
or
Figure 4 - Location of E2 COM Ports
COM6
RS232
COM1
RS485
Serial Device
RS232 Port
POWER INTERFACE BOARD
(PIB)
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