Siemens Wireless Room Sensor Solution User Manual page 12

APOGEE Wireless User Guide
Table 2 describes the possible values displayed for the TEC ADDRESS parameter
Value Displayed
0 — 98
99
|| (two vertical lines)
- - (two dashes)
indicates that the battery power is good (3.2 volts or greater). When the battery power is less
than 3.2 volts,
Replacing WRS Battery for details).
WRS Battery
The WRS is battery powered, with an expected battery life of about five years. Its power level can be
monitored via TEC point 99 (see Table 6), WRS HMI, or an RTS passkey (P/N 544-643).
To conserve battery power, the WRS operates in a sleep mode most of the time. At user-configurable
frequencies, the WRS wakes up (by default every 60 seconds) to sample the temperature and
communicate its information to the RSX/TEC.
After the WRS is installed and powered, it will stay in a low-power sleep mode—and will
not take temperature readings—until commissioned. On WRSs with an LCD panel, the
displayed temperature value will not change until the WRS is bound to an RSX/TEC.
The WRS battery is discharged at a rate of 1 day (of the 5 year battery life) for each 3
minutes of WRS HMI port use (such as using WRS HMI commands, or using with a
TEC tool such as WCIS).
If a bound and powered WRS loses wireless communication with its RSX, the WRS
discharges its battery at twice the normal operational rate in trying to reestablish
communication with its RSX.
WRS HMI Port
On the bottom of the WRS, there is an RJ-11 port that provides HMI access for WRS configuration and
diagnostics. In addition, you can use the WRS port to connect tools (WCIS version 3.0 or later, Datamate
Base Revision 3.2 or later) for communicating with the TEC associated with that WRS. By default, the
WRS stays awake until 5 minutes pass with no activity (user commands or Tool messages) via the HMI
port. This setting can be changed using the SET WRS command.
The WRS HMI is disabled while tools are connected via the WRS port. To regain access to the WRS
HMI, remove and then reinsert the computer cable.
12
Table 2. TEC Address Display.
Indicates
WRS is bound to an RSX, and the TEC connected to the RSX is addressed
WRS is bound to an RSX, and the TEC connected to the RSX is not
addressed
WRS is bound to an RSX, but there is no TEC connected to the RSX
WRS is not bound to an RSX
is shown flashing, indicating you should plan to replace the battery soon (see
Revision Date: July 10, 2008
Siemens Building Technologies, Inc.