WattMaster MG331-21-VAVCAV - Manual (Page 14)

Form: WMS-OE361-CommLink-1B.doc
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VAV System
Description
The OE361 - CommLink II Communica-
tions Interface allows user access to any
controller connected to the controls sys-
tem. The CommLink II comes packaged
in an attractive beige colored plastic en-
closure. The CommLink II is powered by
a small wall mounted plug-in transformer
that is included. Locally, an optional on-
site computer may be connected to the
CommLink II for direct access to system
control parameters. Remote access is
obtained via an optional modem which is
connected with the CommLink II Com-
munication Interface. With a modem in-
stalled, the CommLink II may be config-
ured to call a number, if an alarm condi-
tion occurs. With the modem option the
system could be dialed and monitored
from a remote location by a PC. Com-
puter and modem cables (6ft long) are
provided with the CommLink II.
Mounting
If an on-site computer is to be used for
direct connection and monitoring of the
system, the CommLink II should be lo-
cated near the computer terminal to
monitor the system. If no on-site com-
puter is to be used, locate the CommLink
II near the phone line jack for ease of
connection to a modem. If for any reason
you use cables of greater length than
those provided with the CommLink II (6 ft.
long) be sure the cables that connect the
CommLink II to the modem and the
CommLink II to the on-site computer do
not exceed twenty-five feet in length.
Technical Data OE 361 - CommLink II Communication Interface
Power 24 Volt AC Computer Connection RS-232
Plug-in Transformer 110V to 24V (Included) Network Connection RS-485
Power Consumption 14 VA Maximum Protocol HSI Open Protocol Token Passing
Operating Temperature 10 ° F to 140 ° F Physical Connections (2) 9 Pin/DB9 Male
Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud
Three Year Warranty WattMaster reserves the right to change specifications without notice
OE361 – CommLink II
Communications Interface