Omega ZW Series User manual

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ZW-REC
ZW Series Wireless Receiver
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User’s Guide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.
Servicing North America:
U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047
Stamford, CT 06907-0047 USA
Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: [phone] Fax: [phone]
e-mail: [email protected]
For Other Locations Visit omega.com/worldwide
omega.com [email protected]

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Table of Contents
Table of Contents........................................................................................................................................ 1
List of Figures and Tables............................................................................................................................ 3
NOTES, WARNINGS and CAUTIONS ........................................................................................................ 4
PART 1: INTRODUCTION ............................................................................................................................. 4
1.1 Safety and EMC Considerations........................................................................................................ 4
ESD Warning........................................................................................................................................ 4
EMC Considerations............................................................................................................................ 4
1.2 Environmental and Operating Conditions ........................................................................................ 5
1.3 Before You Begin............................................................................................................................... 5
Inspecting Your Shipment................................................................................................................... 5
Manuals / Software............................................................................................................................. 5
1.4 Included with Your ZW-REC .............................................................................................................. 6
1.5 Description........................................................................................................................................ 6
PART 2: HARDWARE.................................................................................................................................... 7
2.1 ZW-REC Diagram ............................................................................................................................... 7
2.2 DIP Switches...................................................................................................................................... 8
Setting the Network ID ....................................................................................................................... 8
DHCP and Defaults.............................................................................................................................. 9
2.3 Reset Button ..................................................................................................................................... 9
2.4 Dimensions and Mounting.............................................................................................................. 10
PART 3: INITIAL SETUP .............................................................................................................................. 10
3.1 Antenna Warning............................................................................................................................ 10
3.2 Choosing a Network ID.................................................................................................................... 11
3.3 Connecting to ZW-REC .................................................................................................................... 11
Static IP Address................................................................................................................................ 11
DHCP/DNS......................................................................................................................................... 11
https Warning ................................................................................................................................... 11
3.4 Logging into the ZW-REC / Default Passwords ............................................................................... 12
Java.................................................................................................................................................... 12
Passwords ......................................................................................................................................... 12
3.5 Access Control Page ........................................................................................................................ 13
User Names....................................................................................................................................... 13
Passwords ......................................................................................................................................... 13

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Password Policy................................................................................................................................. 13
IP Address.......................................................................................................................................... 14
Host Name, DHPS and DNS Server.................................................................................................... 14
3.6 Configuration Page.......................................................................................................................... 15
Name................................................................................................................................................. 15
Units .................................................................................................................................................. 15
Energy Scan and RF Channel Selection ............................................................................................. 15
PART 4: END DEVICE READINGS AND CONFIGURATION........................................................................... 15
4.1 Readings Page ................................................................................................................................. 16
Sensor Data ....................................................................................................................................... 16
Groups............................................................................................................................................... 17
Logging Sensor Data to Local File...................................................................................................... 17
4.2 Chart Page....................................................................................................................................... 17
Setting up the Chart.......................................................................................................................... 17
Manipulating Data ............................................................................................................................ 18
Save Current Graph........................................................................................................................... 18
4.3 Sensor Setup Page........................................................................................................................... 19
Configuring a Sensor ......................................................................................................................... 20
PART 5: SPECIFICATIONS........................................................................................................................... 21
5.1 Wireless Communications .............................................................................................................. 21
5.2 Ports and Features .......................................................................................................................... 21
5.3 Compatible Wireless Transmitters..................................................................................................... 21
5.4 Power............................................................................................................................................... 21
ZW-REC:............................................................................................................................................. 21
Safety Qualified AC Power Adaptor (Included):................................................................................ 21
5.5 Environmental................................................................................................................................. 21
5.6 GENERAL ......................................................................................................................................... 21
APPENDIX A: Certificate Configuration Page ............................................................................................ 22
APPENDIX B: Diagnostics Page.................................................................................................................. 23
APPENDIX C: Firmware Updates ............................................................................................................... 24
APPENDIX D: ASCII Commands ................................................................................................................. 25
APPENDIX E: Java ...................................................................................................................................... 25
APPENDIX F: RF Topics .............................................................................................................................. 27
APPENDIX G: Wireless Certifications ........................................................................................................ 29
Federal Communication Commission Interference Statement ............................................................ 29

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Industry Canada Statement .................................................................................................................. 29
CE Statement ........................................................................................................................................ 29
APPENDIX H: Safety & Regulatory Compliance......................................................................................... 30
List of Figures and Tables
Figure 1.1 - ZW-REC Included Items............................................................................................................ 6
Figure 2.1 - ZW-REC Diagram ...................................................................................................................... 7
Table 2.1 - ZW-REC Diagram ....................................................................................................................... 7
Figure 2.2 - DIP Switch Close Up ................................................................................................................. 8
Table 2.2 - Network ID ................................................................................................................................ 8
Figure 2.3 - Reset Button Location.............................................................................................................. 9
Figure 2.4 - Mounting Bracket Installation ............................................................................................... 10
Figure 3.1 –https Warning ....................................................................................................................... 11
Figure 3.2 –ZW-REC Home Page .............................................................................................................. 12
Table 3.1 –Default Passwords.................................................................................................................. 12
Figure 3.3 –Access Control Page .............................................................................................................. 13
Table 3.2 –Default Strong Passwords ...................................................................................................... 14
Figure 3.4 –Configuration Page................................................................................................................ 15
Figure 4.1 –Readings Page (Blank) ........................................................................................................... 16
Figure 4.2 –Readings Page (Populated) ................................................................................................... 16
Table 4.1 –Group Assignments ................................................................................................................ 17
Figure 4.3 –Data Logging.......................................................................................................................... 17
Figure 4.4 –Chart Page ............................................................................................................................. 18
Figure 4.5 –Sensor Setup Page................................................................................................................. 19
Figure 4.6 –Sensor Parameters Page ....................................................................................................... 20
Figure A.1- Certificate Configuration ........................................................................................................ 22
Figure A.2 –Validation Page Creation ...................................................................................................... 22
Figure B.1 –Diagnostic Page..................................................................................................................... 23
Figure B.2 –Diagnostic Logging ................................................................................................................ 24
Figure C.1 –Firmware Upgrade Page........................................................................................................ 24
Figure C.2 –Firmware Upgrade Dialog ..................................................................................................... 25
Figure C.3 –Firmware Upgrade Success................................................................................................... 25
Figure E.1 –Java Control Panel ................................................................................................................. 26
Figure E.2 –Java Exception Site List.......................................................................................................... 26
Figure F.1 –Global Frequency Chart......................................................................................................... 27
Figure F.2 –Received Power Chart ........................................................................................................... 28

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NOTES, WARNINGS and CAUTIONS
Information that is especially important to note is identified by the following labels:
•NOTE
•WARNING or CAUTION
•IMPORTANT
•TIP
NOTE: Provides you with information that is important to successfully setup and use the
ZW Series Wireless System.
CAUTION or WARNING: Tells you about the risk of electrical shock.
CAUTION, WARNING or IMPORTANT: Tells you of circumstances or practices that can
affect the instrument’s functionality and must refer to accompanying documents.
TIP: Provides you helpful hints.
PART 1: INTRODUCTION
1.1 Safety and EMC Considerations
ESD Warning
Warning: The following parts of the unit are ESD sensitive:
 The Antenna
 Metal connectors for the Antenna, USB Port, and Power
EMC Considerations
 Whenever EMC is an issue, always use shielded cables.
 Never run signal and power wires in the same conduit.
 Use twisted-pair wires for differential signal connections.
 Install Ferrite Bead(s) on signal wires close to the instrument if EMC problems
persist.
 Failure to follow all instructions and warnings may result in injury!

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1.2 Environmental and Operating Conditions
The ZW-REC is designed to be fixed mounted and operated in a clean and dry
environment. Care should be taken to prevent the components of your device from
being exposed to moisture, toxic chemicals, extreme cold or hot temperature that are
outside the specification listed in this manual. Refer to PART 5 : for more information on
allowable Environmental and Operating Conditions.
The following is a list of basic good practice you should apply when operating this
Wireless System.
 Do not operate the wireless device in flammable or explosive environments.
 Do not use the wireless device in medical, nuclear or any other critical
application where failure can cause damage or harm.
 Always operate the wireless device within the recommended environmental
limits specified in this manual.
 Do not operate your wireless device with a battery or AC adapter other than
what’s supplied or specified in this manual or on the battery compartment label.
 Keep each wireless device at least 8 inches (20 cm) from other radio
transmitters, antennas, and people.
 The FCC approval for this device specifies the specific antenna supplied with
this device.
1.3 Before You Begin
Inspecting Your Shipment
Remove the packing slip and verify that you have received everything listed. Inspect
the container and equipment for signs of damage as soon as you receive the shipment.
Note any evidence of rough handling in transit. Immediately report any damage to the
shipping agent. The carrier will not honor damage claims unless all shipping material is
saved for inspection. After examining and removing the contents, save the packing
material and carton in the event reshipment is necessary.
If you need assistance, please contact the Customer Service Department nearest
you.
Manuals / Software
The latest User Manual as well as free software including iConnect, Omega
Dashboard, iLog and Mail Notifier are available at the website listed on the cover page
of this manual.

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1.4 Included with Your ZW-REC
 ZW-REC Wireless Receiver
 Universal AC Adaptor with US, EU and GB prongs
 Mounting Kit including screws, anchors, mounting bracket and feet.
 2.5GHz Antenna
1.5 Description
The new, high-performance, high power, OMEGA® ZW-REC wireless receiver
provides Web-based monitoring of OMEGA’s IEEE 802.15.4 compatible wireless
transmitters.
The ZW-REC is IEEE 802.15.4 compliant and operates at 2.4 GHz. It is designed to
communicate up to 1000m
1
(3280') to various wireless sensors including the all new
ZW-ED. The ZW-REC connects directly to an Ethernet network to serve active web
pages and display the data. It enables monitoring and recording of Temperature,
Humidity, and Barometric Pressure over an Ethernet network or the Internet without any
special software—just a Web Browser. OMEGA offers a wide variety of different
wireless sensors and transmitters to suit every application.
The ZW-REC offers expanded functionality over previous wireless receivers. The
ZW-REC can connect to up to 128
2
wireless End Devices at once. The built in web
server supports encryption to protect your sensitive data. The ZW-REC can also
wirelessly update firmware for compatible End Devices and Sensors.
The ZW-REC is designed to require no software to setup and run. A standard web
browser can be used to monitor and chart all sensor readings. The browser can also be
used to configure the device’s IP address, passwords for access and overall
configuration parameters. Firmware updates for the ZW-REC itself, compatible End
Devices and sensors can also all be loaded directly from the web browser. The web
server supports HTTP over TLS (HTTPS) which provides a secure connection between
web browser and ZW-REC receiver.
Each ZW-REC receiver can support up to 128 End Devices and up to 8 receivers
can be setup in one area allowing for networks of up to 1024 total End Devices. For
large networks the Omega Dashboard web server software can be used to allow the
monitoring of devices connected to different receivers from a single webpage.
1
Without obstructions or interferences
2
Requires end devices that support IDs 32-128.
Figure 1.1 - ZW-REC Included Items

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PART 2: HARDWARE
2.1 ZW-REC Diagram
Table 2.1 - ZW-REC Diagram Key
1
Antenna Connector
9
Mounting Bracket Holes
2
Power LED
10
Serial Number
3
USB Connector1
11
Network ID DIP Switches
4
Network / Diagnostic LEDs
12
Network ID Label
5
Power Connector
13
MAC Address Label
6
Reset Button
14
IP Address Label
7
Ethernet Connector
15
Feature DIP Switches
8
Wireless Link LED
16
Analog Output/ Alarm Output (Optional)
1
Factory Use Only
Figure 2.1 - ZW-REC Diagram

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2.2 DIP Switches
The ZW-REC has two banks of DIP switched located on the back of the unit for
easy configuration. Figure 2.2 shows a close up view of the switches. To change the
DIP switches use a tweezer or small screwdriver to gently push the switch. Do not apply
excessive force.
Setting the Network ID
The set of 8 switches on the left selects the Network ID. The Network ID (NID)
identifies which End Devices the ZW-REC communicates with. If there are multiple
Receivers deployed in the same area each one must be assigned a unique NID. Make
sure the same NID is selected on the ZW-REC and the End Devices you wish to
monitor. Only switches 5 –8 are used. Do not use switches 1 through 4.
Some End devices only support NIDs 0 –7. Other End Devices may require a PAN
ID for configuration. The PAN ID corresponding to each NID is listed in Table 2.1 .
Consult the user manual of each specific End Device for more information.
Table 2.2 - Network ID
Caution: The NID may be set with a different set of switches depending on
your End Device. Please refer to your End Devices user manual to determine
which switches correspond to the NID.
Switch
NID
PID
8
7
6
5
OFF
OFF
OFF
OFF
0
13106
OFF
OFF
OFF
ON
1
13107
OFF
OFF
ON
OFF
2
13108
OFF
OFF
ON
ON
3
13109
OFF
ON
OFF
OFF
4
13110
OFF
ON
OFF
ON
5
13111
OFF
ON
ON
OFF
6
13112
OFF
ON
ON
ON
7
13113
Switch
NID
PID
8
7
6
5
ON
OFF
OFF
OFF
8
13114
ON
OFF
OFF
ON
9
13115
ON
OFF
ON
OFF
10
13116
ON
OFF
ON
ON
11
13117
ON
ON
OFF
OFF
12
13118
ON
ON
OFF
ON
13
13119
ON
ON
ON
OFF
14
13120
ON
ON
ON
ON
15
13121
Figure 2.2 - DIP Switch Close Up

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DHCP and Defaults
The set of 4 switches near the Ethernet port allow you to do some basic
configuration. Switches 1 and 4 are reserved and should not be used.
Switch 2 is used to reset the ZW-REC to factory defaults. This is useful if the IP
address or password to the ZW-REC is lost. To set the Receiver to factory default
settings perform the following steps:
 Remove power from the ZW-REC.
 Slide DIP switch #2 to ON position.
 Power the ZW-REC on and wait about 10 seconds until the Receiver fully boots
up.
 Set the DIP switch #2 back to OFF position
Note: Make sure that the DIP switch is set to OFF before resuming normal
operation. When the switch is on, every time the unit is power-cycled the factory
settings are loaded. The switch may be changed while the unit is running but
this has no effect until the ZW-REC is reset or power cycled.
Switch 3 is used to force DHCP on. Changing Switch 3 to ON enables DHCP the
next time the ZW-REC is powered or reset. Turning on DHCP in the manner overwrites
the webpage setting. This is useful for situations where it is not possible to connect to
the default IP address. Please see Section 3.3 for more information on requirement to
use DHCP.
To disable forced DHCP change Switch 3 to OFF and reset the device. DHCP
remains on until it is changed from the webpage or the device is reset to defaults.
2.3 Reset Button
Pushing the Reset Button while the ZW-REC is powered reboots the device.
Holding the Reset Button for 9 seconds resets the ZW-REC to its factory default
settings. To access the Reset Button carefully use a small screw driver or paperclip to
depress the switch through the pinhole shown in Figure 2.3 . Do not apply excessive
force as this may damage the device.
Figure 2.3 - Reset Button Location

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2.4 Dimensions and Mounting
The ZW-REC includes all required hardware for mounting. To mount the ZW-REC
position unit where required. Mark the location of the top center of the unit. Refer to
Figure 2.4 to mark and drill the two screw holes as indicated. Use the included drywall
anchors if needed and mount the bracket so that the bracket clips are facing up. Align
the back of the unit over the three clips. When engaged slide downward and snap the
unit in place.
 When mounting the unit be sure to leave room on the top for the Antenna and
on the bottom and side for the cables.
 Mount the unit away from any large metal obstructions such as posts, catwalks,
or large machinery.
 For best wireless range do not co-locate the ZW-REC with other 2.4GHz
wireless equipment such as wireless routers or access points.
 For best wireless range elevate the ZW-REC and keep a direct line of sight to
End Devices.
PART 3: INITIAL SETUP
This section guides you through how to setup your ZW-REC. Please do not power
on any End Devices until Initial Setup is complete. If the ZW-REC is being integrated
into a deployment with existing End Devices those End Devices may need to be reset
once your ZW-REC is configured.
3.1 Antenna Warning
Before powering up the ZW-REC ensure the supplied antenna is properly installed.
Running the ZW-REC without an antenna or with an unapproved antenna may cause
damage to the device and/or cause operation outside of regulatory compliance. Omega
Engineering accepts no liability and issues no warranty for devices operated improperly.
Figure 2.4 - Mounting Bracket Installation

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3.2 Choosing a Network ID
The Network ID (NID) selects which End Devices the ZW-REC communicates with.
The NID is selected using the DIP switches found on the back of the device. If this ZW-
REC is replacing an existing receiver in a wireless sensor installation, determine which
NID is currently used and use the same one. Refer to Section 2.2 to determine the
correct DIP switch settings for each NID.
In a new installation with only one Receiver, keeping the default NID of 0 is
recommended. All End Devices ship with a default NID of 0. If this installation requires
multiple Receivers, ensure that each Receiver has a unique NID.
Record the NID on the Net. Addr. label on the back of the ZW-REC for easy
reference in the future.
3.3 Connecting to ZW-REC
Power on the ZW-REC at this point by plugging in the supplied AC adaptor. The
Green Power LED lights up and the Blue Receive LED flashes. The ZW-REC performs
an energy scan to determine what the best RF frequency to transmit on is. Once the
energy scan has completed the Blue LED will remain lit. See Section 3.6 for more
information on the energy scan.
Connect the ZW-REC to your network or computer using an Ethernet Cable. When
connecting the ZW-REC directly to a computer a crossover cable is needed if the
network adapter is an older 10Base-T or 100Base-TX type. A normal cable can be used
for modern 1000Base-T network adaptors. The green Network Link and Activity LEDs
light up once a connection has been established.
Static IP Address
The ZW-REC comes configured from the factory with a default IP address of
192.168.1.200. This address appears on a label on the back of the device. Bring up the
ZW-REC web page by navigating to https://192.168.1.200 in your web browser.
DHCP/DNS
In installations where a static IP address is undesirable an IP address can be
automatically assigned using a DHCP server. See Section 3.5 for more information.
https Warning
The ZW-REC is configured with a default SSL certificate that is not issued by a
Certificate Authority (CA). Most web browsers provide a warning page when you
connect to the ZW-REC informing you the SSL certificate is not trusted. This is normal
and it is safe to procced. Click “Continue to this website” to bring up the ZW-REC
Home Page. The warning displayed by Internet Explorer is shown in Figure 3.1 .
Figure 3.1 –https Warning

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3.4 Logging into the ZW-REC / Default Passwords
Once you have connected to the ZW-REC the Home Screen pictured in Figure 3.2
is displayed. From here you can configure the ZW-REC, view sensors, update firmware
and many other functions.
Java
Installing Java and/or adding a Java security exception may be required in order to
properly view some web pages. See APPENDIX E: for more information about Java. If
you need assistance with Java please contact your network administrator or refer to:
https://www.java.com/en/download/help/jcp_security.xml.
Passwords
A login is required to access any of the readings or to setup options. The default
usernames and passwords are shown in Table 3.1 .
Table 3.1 –Default Passwords
User Level
Login Name
Password
Client
login
12345678
Administrator
admin
00000000
These settings can be changed from the Access Control page. It is recommended
that you change your passwords now.
Figure 3.2 –ZW-REC Home Page

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3.5 Access Control Page
The Access Control Page is shown in
Figure 3.3 . When loading the page you are
prompted to login with the Administrator
account. Enter your administrator account
name and password when prompted. The
Access Control page allows you to change
user names and passwords and to change
network and encryption settings.
User Names
To change the default user name for the
Client or Admin account, type the desired
name in the dialog box. Press the Save
button to save your changes. After saving,
the ZW-REC must be reset to enable the
new user names. Press the Network Reset
button. The ZW-REC will reset itself and
automatically reload the page after a few
seconds. Reenter the new credentials if you
changed the admin user name.
Passwords
To change the client or admin password,
click on the Change button below the
password you would like to change. On the
next page enter the old password followed by
the new password. Enter the new password
again in the confirmation box. After making
any changes to the passwords press the
Save button to save your changes. You will
be returned to the main Access Control page.
To finalize any changes reset the device
using the Network Reset button. The ZW-
REC will reset itself and automatically reload
the page after a few seconds. Reenter the
new credentials if you changed the admin password.
Password Policy
By default any password is allowed by the ZW-REC. If additional security is
required, the strong password policy may be enforced. Check the Password Policy box
and press Save . The password policy requires that all passwords follow these
restrictions:
Password length must be at least 8 characters long
Password must have at least 1 uppercase letter
Password must have at least 1 lowercase letter
Password must have at least 1 numerical digit [ 0123456789 ]
Password must have at least 1 special character [ !@#$ ]
Figure 3.3 –Access Control Page

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If the current passwords do not meet the password policy they are automatically
reset to the defaults shown in Table 3.2 . Usernames remain the same.
Table 3.2 –Default Strong Passwords
User Level
Password
Client
Omeg15c!
Administrator
Omeg15a!
To finalize any changes reset the device using the Network Reset button. The
network reset restarts your device. This may take a few seconds. You will need to enter
the new credentials when logging back in.
IP Address
Network parameters can be changed from the access control page. To change the
default static IP address type a new address in the IP address box. Press the Save
button to confirm your change. A Network Reset is required before the new settings
take effect. After the network reset the page automatically re-loads using the new IP
address.
 When changing to an IP address on a different subnet you will be unable to
reload the webpage until you connect your ZW-REC to that subnet.
 If you change the IP address it is highly advised that the label be updated.
Remove the IP Address sticker and write in your new IP address in the area
provided.
Host Name, DHPS and DNS Server
The default host name for the ZW-REC is zwrec**** where **** are the last 4 digits
of your MAC Address. See Figure 2.1 for the location of the MAC address.
You may access the ZW-REC using its host name instead of its IP address. To use
this feature you must first enable DHCP and connect to a Domain Name Server (DNS).
Enabling DHCP allows your DHCP Server to automatically assign an IP address.
Checking the DHCP box overwrites the static IP settings. Be sure to also enter the
address of your Domain Name Server (DNS) when you enable DHCP. A DNS links
your device’s host name to its IP address. To use a DNS, enter its address in the DNS
box. If DHCP is turned on but a DNS is not available it may be difficult to locate the
correct IP address to connect to your ZW-REC.
Once you have made your desired changes press the Save button to confirm your
change. A network reset is required before the new settings take effect. Once the
device is reset you navigate to https://HOSTNAME to access the ZW-REC. Please note
that it may take a few moments for your DNS server to recognize your receiver.
 It is very important to communicate with the network administrator in order to
understand DHCP and its existing configurations on the host server, before
enabling DHCP on the Receiver.
 On Windows servers where DCHP and DNS are separate functions it is very
important to configure the DHCP server to communicate with the DNS in order
for the Host Name to be correctly identified.
 If you cannot access the ZW-REC using its Host Name, please contact your
network administrator to make sure the DHCP server and DNS are linked
together.

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3.6 Configuration Page
The configuration page is pictured in
Figure 3.4 . From the Configuration page
you can change the device name, display
units, TCP settings, Encryption Settings
and RF settings.
Name
The name of the ZW-REC can be
changed by typing a new name into the
dialog box. The name is presented in
certain web pages and other Omega
software.
Units
By Default the ZW-REC displays
temperature in Celsius and Pressure in
mbar. You may change that setting here.
All connected End Devices that have an
LCD are also updated to display the
selected units when the next reading is
transmitted.
Energy Scan and RF Channel Selection
On initial start up the ZW-REC scans for
the wireless channel with the least traffic.
This channel appears in the Channel box. If
you would like to select a specific wireless
channel you can use the pull down menu to
select the channel you would like. Refer to APPENDIX F: for more information on
802.15.4 wireless channels.
To have the ZW-REC save the wireless channel as the default uncheck the “Energy
Scan at Startup” box. This stops the ZW-REC from doing an energy scan again. If using
older End Devices such as zSeries End Devices it is recommended you disable the
energy scan now.
Once you have made any required changes press the Save button to save your
settings. The new settings require a reset to take effect. Press the Radio Reset button
to switch to the new RF Channel. Older End Devices may need to be reset if the RF
Channel has been changed. Please refer to the user manual for your End Device for
more information.
PART 4: END DEVICE READINGS AND CONFIGURATION
This section details how to view, log, and chart data from your End Device. At this
point configure any End Devices you have. Confirm that all End Devices are set to the
same Network ID as the desired ZW-REC. Also ensure each End Device has a different
Device ID selected. If an End Device is running it needs to be reset after changes to the
Device ID or Network ID. Power on all End Devices now. If you have existing End
Devices you may need to reset them at this time.
Please refer to the user manual for your End Device for detailed instructions on
setting Network IDs and Device IDs.
Figure 3.4 –Configuration Page

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4.1 Readings Page
The Readings page allows you to view the current sensor data from all connected
End Devices. Before the ZW-REC connects to any End Devices, it shows an initial page
without any readings shown in Figure 4.1 .
When an End Device turns on it enters active scan mode and search for a receiver.
When your ZW-REC is found the Wireless Link Indicator on your End Device flashes
once and turns off. The Link Indicator flashed again each time a reading is transmitted.
Now your End Device is accessible in the Readings web page.
Sensor Data
Once an End Device is connected to the ZW-REC, the Readings page displays
sensor data as shown in Figure 4.2 . The readings reflect the type of sensors that are
attached to your End Devices. You may view one group of sensors at a time.
Figure 4.1 –Readings Page (Blank)
Figure 4.2 –Readings Page (Populated)

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Groups
End Devices communicating with the ZW-REC are arranged into groups of eight by
Device ID for easier visibility. Use the drop down box at the top of the page to select
which group you wish to view. Refer to Table 4.1 for group assignments. Not all End
Devices can use device DIDs 32 and above. Please refer to your End Device user
manual for more information.
Table 4.1 –Group Assignments
Logging Sensor Data to Local File
Logging sensor data is useful if you need to keep a record of your sensor data or
follow trends in your readings. To enable data logging, click the Data Logging button.
You will be asked for location and file name for the log to be saved. Once the logging
process is started, the dialog window shown in Figure 4.3 appears and the button text
will change to ACTIVE . The Readings Page must be kept open for logging to continue.
To stop logging click the Data Logging button again. The button will now display
INACTIVE and your log file will be available.
4.2 Chart Page
The Chart page give a graphical view of the sensor data. Figure 4.4 shows the
chart interface. The Chart page can show all eight End Devices in one group at the
same time. Select which group to view using the pulldown menu in the bottom right of
the screen. The Chart starts graphing data immediately.
Setting up the Chart
The Chart is highly customizable based on your needs. Temperature is displayed on
the left axis. Humidity and Pressure are displayed on the right axis. The units used to
graph for Temperature and Pressure can be changed using the drop down menus on
the top of the chart. Selecting units here only changes the chart. It does not change the
units displayed in the Readings Page, displayed on the End Device or during logging.
Each Axis can be set to a custom scale. Enter the maximum or minimum sensor
values into the corresponding dialog box next to each axis. Press Enter on your
keyboard to confirm the number. The chart automatically adjusts to the new extents.
Use the pull down menu at the bottom of the chart to select the time interval. The chart
Group
Device ID
Group
Device ID
Group
Device ID
Group
Device ID
A
0 –7
E
32 –39
I
64 –71
M
96 –103
B
8 –15
F
40 –47
J
72 –79
N
104 –111
C
16 –23
G
48 –55
K
80 –87
O
112 –119
D
24 –31
H
56 –63
L
88 –95
P
120 –127
Figure 4.3 –Data Logging

18 | P a g e
always displays the newest data from the last time interval. The time of the last chart
update is shown in the black box on the bottom right of the chart. The newest data is
always shown on the right side of the chart.
Manipulating Data
The eight buttons on each side of the display allow you to show, hide or highlight
the data for each sensor. By default all sensors are be shown. Each End Device has a
primary Sensor. Some End Devices also have a Secondary Sensor. The Primary
sensors are shown on the left of the chart. Each button is labeled with the Device ID
and the name of the End Device. If there is no End Device on a particular DID, the
button reads ‘Primary’ instead. The Secondary sensors are shown on the right side of
the Chart. If an End Device is connected but does not have a Secondary Sensor the
button reads ‘Lost’. Otherwise the Secondary buttons act the same as the Primary
Buttons.
When no data is highlighted, the Max and Min readings, for each measurement
across all of the End Devices, are displayed across the top of the chart. Pressing a
Primary or Secondary button once, causes the corresponding data to be highlighted on
the chart and the text on that button changes to Bold . The current reading for the
highlighted sensor appears at the top of the graph and the label changes to reflect the
sensor name. Only one Primary and one Secondary sensor can be highlighted at one
time. Pressing the same button again changes the text to white and hides the sensor
from the graph. Hidden sensors do not contribute data to the Max/Min readings.
Pressing the button a third time returns the sensor to the chart.
Save Current Graph
The Chart page allows you to save the current graph as a png file. To save the
graph press the Save Current Graph button. Enter a file name and location in the
dialog box and press Okay to save the image.
Figure 4.4 –Chart Page