Siemens Wireless Room Sensor Solution User manual

Wireless Room Sensor Solution
User Guide
Table of Contents
About This User Guide ............................................................................................ 5
Chapter 1–Quick Start ............................................................................................ 7
Chapter 2–About the Wireless Room Sensor Solution ...................................................... 8
Why Use Wireless Room Temperature Sensor Communications? ................................... 8
Hardware Components .................................................................................... 8
Room Sensor Transceiver (RSX) .................................................................... 9
Wireless Room Sensor (WRS)..................................................................... 10
Revision History .......................................................................................... 13
Security.................................................................................................... 13
Chapter 3–Preparing for Wireless Communications....................................................... 14
WRS Limits................................................................................................ 14
RSX Location ............................................................................................. 14
RSX Antenna Mounting.................................................................................. 15
WRS Location............................................................................................. 16
Site Survey Guidelines................................................................................... 16
Chapter 4–Setting Up the WRS/RSX Pair..................................................................... 17
Before You Begin......................................................................................... 17
Binding the WRS/RSX Pair.............................................................................. 17
Binding Using WRS HMI Commands.............................................................. 18
Binding Using Auto-Binding Cable................................................................. 18
Configuring WRS/RSX Parameters .................................................................... 19
Verifying WRS/RSX Communications.................................................................. 22
WRS Points ............................................................................................... 23
Point Commands .................................................................................... 24
Command Priority.................................................................................... 24
Revision Date: July 10, 2008 (563-068) 1
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
Point Status .......................................................................................... 25
Diagnostic Points (Communication Status and Battery Voltage) ............................... 25
Chapter 5–Modifying the WRS/RSX Pair ..................................................................... 26
Replacing WRS Battery.................................................................................. 26
Enabling/Disabling Automatic Channel Changing .................................................... 27
Replacing an Existing WRS ............................................................................. 28
Replacing an Existing RSX ............................................................................. 28
Viewing WRS and RSX Default Values ................................................................ 29
Restoring WRS and RSX Default Values .............................................................. 30
Appendix A–Troubleshooting (Advanced Users) ........................................................... 31
Verifying RSX/TEC Communications................................................................... 31
Viewing WRS/RSX Communication Quality ........................................................... 31
Viewing WRS/RSX Reporting and Status Values..................................................... 34
Pinging an RSX (PING).................................................................................. 34
Viewing Diagnostics (DIAG)............................................................................. 35
Testing Wireless Communication Quality (TEST) .................................................... 36
Viewing All Data (INFO) ................................................................................. 37
Clearing Diagnostic Counts (CLEAR) .................................................................. 38
Checking RF Energy Levels (ENERGY)............................................................... 38
Appendix B–Powering RSX Using 9 Vdc Battery........................................................... 39
Appendix C–Wireless TEC Commissioning and Balancing............................................... 40
Appendix D– Wireless Channels............................................................................... 40
Overview .................................................................................................. 40
Automatic Channel Changing .......................................................................... 41
2Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
Rev. AA, July 10, 2008
NOTICE
The information contained in this document is subject to change without notice and should not be construed
as a commitment by Siemens Building Technologies, Inc. Siemens Building Technologies, Inc. assumes no
responsibility for any errors that may appear in this document.
All software described in this document is furnished under a license and may be used or copied only in accordance
with the terms of such license.
FCC NOTES
This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. The device may not cause harmful interference.
2. The device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
To comply with FCC’s RF exposure limits for general population/uncontrolled exposure, the antenna(s) used for
this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not
be co-located or operating in conjunction with any other antenna or transmitter.
FCC Interference Statement (Part 15.105 (b))
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Industrie Canada Certification:
This device has been designed to operate with an antenna having a maximum gain of 5dBi. An antenna having a
higher gain is strictly prohibited per regulations of Industry Canada. The required antenna impedance is 50Ω.
Revision Date: July 10, 2008 3
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the
equivalent isotropically radiated power (EIRP) is not more than that required for successful communication.
This equipment is to be installed or replaced by professional installation personnel only.
NCC Interference Statement (Taiwan)
經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設
計之特性及功能。低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停
用，並改善至無干擾時方得繼續使用。前項合法通信，指依電信法規定作業之無線電通信。低功率射頻電機
須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。
According to "Administrative Regulations on Low Power Radio Waves Radiated Devices" without permission
granted by the NCC, any company, enterprise, or user is not allowed to change frequency, enhance transmitting
power or alter original characteristic as well as performance to approved, low power radio-frequency devices. The
low power radio-frequency devices shall not influence aircraft security and interfere legal communications; if found,
the user shall cease operating immediately until no interference is achieved. The said legal communications means
radio communications is operated in compliance with the Telecommunications Act. The low power radio-frequency
devices must be susceptible with the interference from legal communications or ISM radio wave radiated devices.
SERVICE STATEMENT
Control devices are combined to make a system. Each control device is mechanical in nature, and all mechanical
components must be regularly serviced to optimize their operation. Siemens Building Technologies, Inc. branch
offices and authorized distributors offer Technical Support Programs that will ensure continuous, trouble-free
system performance.
TO THE READER
Your feedback is important to us. If you have comments about this manual, please submit them to:
[e-mail].
CREDITS
BACnet is a registered trademark of the American Society of Heating, Refrigeration and Air-Conditioning
Engineers, Inc.
Product or company names mentioned herein may be the trademarks of their respective owners.
For further information, contact your nearest Siemens Building Technologies, Inc. representative.
Copyright ©2008 by Siemens Building Technologies, Inc.
4Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
About This User Guide
This user guide is written for System Specialists, Service Specialists, Technical Engineers, and District
Automation Specialists who want to plan, design, and maintain the Wireless Room Sensor Solution.
How This Guide Is Organized
This user guide is organized as follows:
•Chapter 1–Quick Start provides quick start steps for getting the Wireless Room Sensor Solution
operating.
•Chapter 2–About the Wireless Room Sensor Solution provides information about the Wireless
Room Sensor Solution.
•Chapter 3–Preparing for Wireless Communications provides recommendations and guidelines for
designing the Wireless Room Sensor Solution.
•Chapter 4–Setting Up the WRS/RSX Pair provides details for starting up and configuring the
Wireless Room Sensor Solution.
•Chapter 5–Modifying the WRS/RSX Pair provides procedures for modifying setup and operation of
the Wireless Room Sensor Solution.
•Appendix A–Troubleshooting (Advanced Users) provides helpful procedures for troubleshooting
the Wireless Room Sensor Solution.
•Appendix B–Powering RSX Using 9 Vdc Battery provides details on using a 9 Vdc battery to power
theRSXwhenperformingsitesurveys.
•Appendix C–Wireless TEC Commissioning and Balancing provides information on using the
wireless WRS/RSX communications link to configure the TEC device using a tool.
•Appendix D– Wireless Channels provides details on how channels are selected on the wireless link
and how the automatic channel changing feature works for the Wireless Room Sensor Solution.
Document Conventions
The following table lists conventions to help you use this user guide in a quick and efficient manner.
Convention Example
Numbered Lists (1,2,3…) indicate a procedure with
sequential steps. 1. Turn OFF power to the field panel.
2. Start the device.
The arrow symbol signifies a one-step procedure.
Click Start.
Revision Date: July 10, 2008 5
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
Convention Example
Actions that you should perform are specified in boldface
font.
Type Ffor field panel.
Error and system messages are displayed in Courier
New font.
The message Report Definition successfully
renamed appears in the status bar.
Brackets and italics [ ] indicate text that can vary based
on your selection.
In the Computer name field of the Identification tab, type
[your computer name].
Symbols
The following table shows symbols that may be used in this document to draw your attention to important
information.
Notation Symbol Meaning
WARNING: Indicates that personal injury or loss of life
may occur to the user if a procedure is not
performed as specified.
CAUTION: Indicates that equipment damage or loss of
data may occur if the user does not follow
a procedure as specified.
Note Provides additional information or helpful
hints that need to be brought to the reader’s
attention.
Tip Suggests alternative methods or shortcuts
that may not be obvious, but can help the
user better understand the capabilities of
the product.
Getting Help
For further information about Wireless Room Sensor Solution, contact the Wireless Solutions team
in Buffalo Grove.
6Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
Chapter 1–Quick Start
To quickly get your Wireless Room Sensor Solution up and running, follow these steps:
1. Install and power up Room Sensor Transceiver (RSX) device. To do this, see Room Sensor Transceiver
Installation Instructions.
2. Install and power up Wireless Room Sensor (WRS) device. To do this, see Wireless Room Sensor
Installation Instructions.
3. At the TEC, verify that the ROOM TEMP, RM STPT DIAL, and DI OVRD SW points are not overridden
(such as by WCIS, Database Mate, the field panel, workstation software, etc.). If points are overridden,
then release the points so the RSX can update them with WRS values.
4. If your RSX and WRS devices are not bound (normally performed during WRS installation), bind the
WRS device with the RSX device. To do this, see Binding the WRS/RSX Pair.
5. (Optional) If using Sensing Only or Sensing with Display WRS model, set RM STPT DIAL point (point
4) to desired value (see second note under Command Priority for details).
6. If desired, change RSX and WRS configuration settings. To do this, see Configuring WRS/RSX
Parameters.
7. Verify WRS communications with the RSX device. To do this, see Verifying WRS/RSX Communications.
8. (Optional) If TEC device needs to be commissioned/configured, you can connect to TEC device via
WRS HMI port connection (see Appendix C–Wireless TEC Commissioning and Balancing for details).
Revision Date: July 10, 2008 7
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
Chapter 2–About the Wireless Room Sensor Solution
Chapter 2 describes the features and overall functions of the Wireless Room Sensor Solution.
Why Use Wireless Room Temperature Sensor Communications?
Wireless communications between a room temperature sensor and TEC is a cost effective, reliable, and
flexible alternative to a hard-wired solution that differentiates our solutions from our competitors. For
example, in applications where wire must be run through conduit, electrician labor is expensive, and
architecture or building materials make running a cable difficult, a Wireless Room Sensor Solution is an
attractive alternative.
• Less cabling is required for room temperature sensor device installation. Low-impact installation
enables cost effective replacement of pneumatic and competitor equipment.
• Easier installation and re-configuring spares facilities the difficulties associated with rewiring to
support new cable routing.
• Factory installation of wireless transceivers by terminal box manufacturers further reduces
electrician involvement at installation time and reduces installation costs.
Hardware Components
The Wireless Room Sensor Solution is a wireless connection between P1 or BACnet TECs and room
temperature sensors that communicate via a radio frequency (RF) link instead of a hard-wired link. For
the Wireless Room Sensor Solution, a Wireless Room Sensor (WRS) communicates via point-to-point
wireless link to a Room Sensor Transceiver (RSX) device connected to a TEC device.
WLAN0091R2
s
Figure 1. WRS Communicating with RSX/TEC.
8Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
WRS and RSX devices are not supported by first-generation Siemens Wireless Field
Level Network (WFLN) devices.
Room Sensor Transceiver (RSX)
A Room Sensor Transceiver (RSX) connects to the RTS port of a TEC device. The RSX enables the TEC
device to wirelessly communicate with a Wireless Room Sensor (WRS). Each RSX supports one TEC and
one WRS, and each WRS supports one RSX and one TEC.
Figure 2. Room Sensor Transceiver (RSX).
The RSX provides an indicator light to furnish operation and communication link status. See Table 1 to
monitor current RSX status.
In Table 1, rapid flashes last .25 seconds, while slow flashes last 1 second.
Table 1. RSX Indicator Light.
Indicator State RSX Status Good or Bad?
Off Powered off N/A
Solid Yellow (for 10
seconds)
Completed binding operation with WRS, or received
communication request (or “ping”) from bound WRS
Good
continued on next page...
Revision Date: July 10, 2008 9
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
Table 1. RSX Indicator Light. (continued)
Indicator State RSX Status Good or Bad?
Rapid Green Flashes RSX is communicating wirelessly with its bound and
powered WRS, and is communicating with its wired
link to a powered TEC
Good
Two Rapid Green
Flashes followed by
2 seconds OFF time
RSX is communicating wirelessly with its bound and
powered WRS, but is not communicating with its wired
link to a powered TEC
Bad
Need to check wired
link and TEC device for
problems.
Two Slow Green Flashes
followed by 2 seconds
OFF time
RSX has not communicated wirelessly with its WRS
during the last two WRS heartbeat intervals (default
of 10 minutes), but the RSX is communicating via its
wired link to a powered TEC
Bad
Need to check wireless
link and WRS device
for problems.
Slow Green Flashes RSX is not bound to a WRS or is not communicating
with bound WRS, and is not communicating with its
wired link to a powered TEC
Bad
Need to ensure RSX
is bound to WRS, then
check links (wireless
and wired) and devices
(WRS and TEC) for
problems.
Flashing Yellow Bootloader only loaded. Bad
RSX is not operational.
Need to contact Field
Support.
Solid Yellow
(Continuous)
EEPROM error. Bad
RSX is not operational.
Need to contact Field
Support.
Wireless Room Sensor (WRS)
A Wireless Room Sensor (WRS) is associated with a specific RSX/TEC. Using the wireless connection,
the WRS communicates its information to its TEC via associated RSX attached to the TEC’s RTS port.
Three WRS models are available:
•Sensing Only
•Sensing with Display – includes an LCD panel showing current room temperature, TEC occupancy
mode, TEC address, remaining WRS battery power, and wireless WRS/RSX link communication
strength(whenindiagnosticmode). Canbeconfigured to show room temperature in either
Fahrenheit or Celsius degrees.
•Full Featured (Sensing with Display, Override, and Setpoint) – in addition to the Sensing with
Display features, this model includes push buttons for users to override the occupancy mode
and adjust the temperature setpoint.
10 Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
WRS Display
The WRS display may show three different views, depending on the display mode:
•Current Temperature and Occupancy Mode (see Figure 3). Shown on both WRS models with
a display, the LCD panel can be configured to always show the information or temporarily show
the information only after a button is pushed.
WLAN0079R1
OCCUPIED MODE
UNOCCUPIED MODE
Figure 3. Current Temperature and Occupancy Mode View.
When an HMI cable is inserted into the WRS, the current temperature and occupancy mode view is
shown along with the and icons (see below for details on these icons).
•Setpoint (see Figure 4). This view is available on full-featured WRS models only and is shown after
the +or −button is pushed.
WLAN0079R1
OCCUPIED MODE
UNOCCUPIED MODE
SETPOINT INDICATOR
(71 F)
Figure 4. Setpoint View.
•Diagnostics (see Figure 5). This information is shown after an RTS passkey (P/N 544–643) is
inserted in the WRS RJ-11 port of either of the two WRS models with a display.
TEC ADDRESS
WLAN0080R1
RF STRENGTH
BATTERY VOLTAGE
TEC ADDRESS
(11)
Figure 5. Diagnostics (Passkey) View.
represents the percentage of WRS communications that were successfully completed:
4 bars = 100% to 99.5
3 bars = 99.5% to 99%
2 bars = 99% to 98%
1 bar = 98% to 96%
0 bar = 96% to 0%
does not display real-time wireless communication status. It is updated every 60 seconds.
Revision Date: July 10, 2008 11
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
Table 2 describes the possible values displayed for the TEC ADDRESS parameter
Table 2. TEC Address Display.
Value Displayed Indicates
0—98 WRS is bound to an RSX, and the TEC connected to the RSX is addressed
99 WRS is bound to an RSX, and the TEC connected to the RSX is not
addressed
|| (two vertical lines) WRS is bound to an RSX, but there is no TEC connected to the RSX
- - (two dashes) WRS is not bound to an RSX
indicates that the battery power is good (3.2 volts or greater). When the battery power is less
than 3.2 volts, is shown flashing, indicating you should plan to replace the battery soon (see
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
minutesofWRSHMIportuse(suchasusingWRSHMIcommands,orusingwitha
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 Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
WARNING:
Do not leave tools (such as WCIS) running for long periods connected to the WRS HMI
port. 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 when this occurs.
Accessories
The following accessories are available:
•Computer Cable (P/N 540-143) – used for connecting a computer to the RJ-11 jack on the WRS.
Using an HMI, you can run WRS commands for binding the WRS to an RSX/TEC, view and change
configuration settings, and view communication and diagnostic values.
The computer cable requires a male DB9 RS-232 Serial (COM) port at the computer. If the
computer does not have this port, you will need an additional serial port adapter to connect to
the computer via USB port.
•RTS Passkey (P/N 544-643) – wakes up the WRS and puts display into diagnostic mode.
Diagnostic information is displayed on the LCD panel (see Figure 5).
Revision History
Table 3 shows the revision information for the WRS solution and its components.
Table 3. WRS Revision History.
Firmware
Revision
WRS
Version
RSX WRS
Comments
Version 1 10 10 Initial release
Security
When discussing wireless communications, the issue of security frequently comes up. In general, for the
Wireless Room Sensor Solution, security is a non-issue. Although the point-to-point wireless link does
not use encryption, it would be very difficult (if not impossible) for someone to hack into the link for the
following reasons:
•Proprietary Communication Protocols:
– Building Automation Communication Protocol (P1)—Without extensive knowledge of the
P1 protocol, it is not possible to extract or insert any meaningful information from or into
the wireless link.
– Wireless Communications Protocol—Without thorough knowledge of the proprietary wireless
communications protocol, it is not possible to communicate with either the WRS or RSX .
Revision Date: July 10, 2008 13
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
•Not Readily Available RF Radio – The WRS solution uses an IEEE 802.15.4 radio. These radios
are not readily commercially available. Therefore, there are limited sources to be able to procure a
radio to use for malicious purposes.
•Short Range – Typically, you need to be inside the facility to be within RF communications range of
a WRS/RSX wireless link.
For these reasons, it would be more difficult to hack into a WRS/RSX wireless link than a hard-wired
network (where someone can fairly easily “tap” into the hard-wired trunk).
Chapter 3–Preparing for Wireless Communications
WRS Limits
The following limits apply to wireless link and automatic channel changing operation.
• Wireless link limits:
– If the results of a CHECK RSX or BIND command at the WRS HMI shows that the WRS/RSX
pair has a Link Quality value of less than 90%, then the RSX and/or WRS should be
repositioned so that a better wireless communication link exists between them.
• Automatic channel changing—see Appendix D– Wireless Channels for details on limits.
RSX Location
The RSX should be typically mounted within 100 feet from its associated WRS. Where possible, mount
RSXs so the antennas are not blocked by metal objects or other obstructions that may hinder the signal
transmission (see Figure 6). Direct mount antennas allow the most flexible placement of RSXs for optimal
communications.
CAUTION:
Antennas must be at least 24 inches (61 cm) apart to avoid wireless interference
between two RSXs.
CAUTION:
To avoid interference, install the RSX at least 10 feet (3.1m) away from any wireless
ethernet (802.11) access point device.
14 Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
WLAN0087R1
TERMINAL
BOX
TERMINAL
BOX
TERMINAL
BOX
Figure 6. Typical RSX Direct Mount Antenna Installation on Terminal Box.
RSX Antenna Mounting
The RSX is available with a direct mount antenna (see Figure 6) or a remote mount antenna (P/N
563–008) capable of being bulkhead mounted with a cable 12 inches (30 cm) from the RSX (Figure 7).
Revision Date: July 10, 2008 15
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
CAUTION:
RSXs cannot be mounted where the antenna is inside a metal enclosure (a remote
mount antenna is needed).
The antenna location should be positioned to provide the best line of sight
communication.
All antennas must be oriented vertically. Vertical polarization maximizes the
transmission distance of each device.
WLAN0089R1
Figure 7. Typical RSX Remote Mount Antenna Installation (12 in./30cm cable).
WRS Location
For a WRS, select a location based on the standard rules for room temperature sensors. Keep in mind that
the WRS should generally be within 100 feet (30 m) of its associated RSX. Also, ensure there are no metal
objects directly between the WRS and the RSX. To avoid potential problems with interference, do not place
a WRS within 10 feet (3.1m) of other RF devices (such as microwave ovens and 802.11 access points).
Site Survey Guidelines
Typically, a WRS/RSX pair operate well if they are within 100 feet of each other, and neither are within
10 feet of other wireless interference sources (mainly 802.11 access points). However, if there is some
question about whether WRS/RSX pairs are suitable for a particular job (such as if there are intervening
physical building materials between the pair), the best way to determine this is to perform a simple site
survey as follows:
1. Make a note of the last 4 digits of RSX’s EUID (the number on the sticker that starts with “000D6F”).
2. Power up the RSX using a 9 Vdc battery (see Appendix B–Powering RSX Using 9 Vdc Battery for details
using a 9 Vdc battery for RSX power) and place in the physical location where it would be located.
3. Position the WRS in the physical location where it would be located and connect a computer cable
(540-143) from a computer to the RJ-11 port on the bottom of the WRS.
16 Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
TheWRSwakesupandremainsactivefortheamountoftimespecified by its HMI port timeout setting
(default = 5 minutes). If the WRS returns to sleep mode before you are done, disconnect and then
reconnect the cable to the WRS port.
4. Start a HyperTerminal session, log on (1200 baud, 8 data bits, no parity, 1 stop bit, no flow control), and
then press ENTER to display the HMI prompt.
If there is no communication with the WRS, verify that the battery is properly inserted and the plastic
insulating strip is removed.
5. Type BIND RSX a(a= last 4 digits of RSX’s EUID as noted in step 1) and press ENTER.
6. Note the Link Quality % parameter value—it should be above 90% for good WRS/RSX wireless
communication.
7. Type UNBIND and press ENTER.
Chapter 4–Setting Up the WRS/RSX Pair
Before You Begin
Before commissioning the WRS/RSX pair, verify the following:
•RSXispowered.
• WRS is powered—the battery’s plastic insulating strip has been removed.
• Although not required for startup, the following are required to fully commission the WRS:
– TECs are addressed and attached to RSXs.
– At the TEC, verify that the ROOM TEMP, RM STPT DIAL, and DI OVRD SW points are not
overridden (such as by WCIS, Database Mate, the field panel, workstation software, etc.). If
points are overridden, then release the points so the RSX can update them with WRS values.
Binding the WRS/RSX Pair
The WRS/RSX pair is normally bound during installation. In the event you need to bind the WRS/RSX pair,
you can use either WRS HMI commands or the optional auto-binding cable.
When you bind a WRS and RSX:
• The WRS is informed which RSX/TEC will receive and process its data.
• The RSX is informed which WRS device will send its data.
Revision Date: July 10, 2008 17
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
Upon binding a RSX and WRS together, the WRS/RSX channel is set to 15 and auto-channel changing
(AUTO) is enabled at both devices. This is done regardless of what the previous WRS/RSX channel
setting was (either AUTO or 1 – 15).
Binding Using WRS HMI Commands
Through the BIND RSX command, you associate a WRS with a specific RSX/TEC. Sensor information is
processed only by the RSX bound to the WRS.
To bind the WRS/RSX pair using HMI commands:
1. Connect a computer cable (540-143) from a computer to the RJ-11 port on the bottom of the WRS.
TheWRSwakesupandremainsactivefortheamountoftimespecified by its HMI port timeout setting
(default = 5 minutes). If the WRS returns to sleep mode before you are done, disconnect and then
reconnect the cable to the WRS port.
2. Start a HyperTerminal session, log on (1200 baud, 8 data bits, no parity, 1 stop bit, no flow control), and
then press ENTER to display the HMI prompt.
If there is no communication with the WRS, verify that the battery is properly inserted and the plastic
insulating strip is removed.
3. Type BIND RSX a(a= last 4 digits of RSX’s EUID) and press ENTER.
4. When the WRS and RSX successfully bind:
• The RSX’s indicator light is solid yellow for 10 seconds.
• The WRS issues a CHECK RSX command to verify wireless link quality.
5. If the CHECK RSX command shows that communication is poor (less than 90%), then the RSX and/or
WRS should be physically repositioned to increase the link quality above 90%.
If a bound WRS cannot communicate with its RSX, it uses battery power at
approximately twice the normal rate in its attempt to get a response from the RSX.
Keep this in mind if the WRS loses communication with its RSX during normal
operation or is temporarily stored away from its associated RSX.
Binding Using Auto-Binding Cable
You can use an optional auto-binding cable (563-207) to automatically bind a WRS with a specific RSX/TEC
without using HMI commands. Sensor information is processed only by the RSX bound to the WRS.
To bind the WRS/RSX pair using the auto-binding cable:
1. Plug the cable end labeled Room Sensor Port to the RJ-11 port on the bottom of the WRS.
2. Plug other end of cable to the RJ-11 port on the RSX.
18 Revision Date: July 10, 2008
Siemens Building Technologies, Inc.

Wireless Room Sensor Solution
3. If the RSX indicator light does not immediately turn solid yellow (indicating a bind), power cycle the
RSX to place it in binding mode.
4. When the WRS and RSX successfully bind, the RSX’s indicator light is lit in solid yellow for 10 seconds.
5. Disconnect binding cable when the RSX indicator light is solid yellow.
For details on binding when replacing an existing WRS or RSX, see Chapter 5–Modifying the WRS/RSX
Pair.
To verify WRS/RSX wireless communication, see Verifying WRS/RSX Communications.
If a bound WRS cannot communicate with its RSX, it uses battery power at
approximately twice the normal rate in its attempt to get a response from the RSX.
Keep this in mind if the WRS loses communication with its RSX during normal
operation or is temporarily stored away from the network.
Configuring WRS/RSX Parameters
The WRS and RSX are configured in the factory with the most typical settings. If needed, you can change
configuration values for both devices. Table 4 lists the parameters for both the WRS and RSX. Some
settings do not apply to the Sensing Only and Sensing with Display models.
Revision Date: July 10, 2008 19
Siemens Building Technologies, Inc.

APOGEE Wireless User Guide
Table 4. WRS and RSX Configuration Settings.
Parameter Description Default
Value
To:
Temp. Unit Display, sensing, and reporting
temperature unit: Fahrenheit or
Celsius.
Fahrenheit
Room Temp. COV (deg) Maximum temperature change of
value allowed before the WRS
reports the current temperature to its
RSX/TEC.
0.5
Room Temp. Sample Rate (sec) Frequency with which the WRS
wakes up and takes a temperature
reading.
60
RSX Poll Rate by WRTS (sec) Frequency with which the WRS
wakes up and polls the RSX for
messages.
60
Display Always On LCD always shows the current
temperature or only after someone
pushes a button.
Yes
HMI/MMI Port Timeout (sec) Length of time the WRS remains
awake after the HMI port is accessed.
300
Battery Voltage COV (mV) Maximum change in battery voltage
allowed before the WRS reports the
current voltage to its RSX/TEC.
50
WRS Heartbeat (min) Maximum time allowed for no
communication with the RSX/TEC.
After this, the WRS wakes up and
reports its presence to the RSX/TEC.
5
Point Number for Room Temp. Point number used in TEC
application.
4
Point Number for Room Setpoint Dial Point number used in TEC
application.
13
Point Number for DI Override Switch Point number used in TEC
application.
19
Point Number for Night Override Point number used in TEC
application.
21
Point Number for Day/Night Point number used in TEC
application.
29
−View the current
values, use the PARAM
WRS command.
– Change the value(s),
use the SET WRS
command.
−View the factory
detault values, use
the DEFAULT WRS
command.
Radio Channel Channel used by the RSX/WRS
pair. The AUTO value enables the
automatic channel-changing feature.
AUTO – View the current
values, use the PARAM
RSX command.
– Change the value(s),
use the SET RSX
command.
−View the factory
detault values, use
the DEFAULT RSX
command.
20 Revision Date: July 10, 2008
Siemens Building Technologies, Inc.