TemperZone Babel Buster 3 User manual

BB3-7101-TZ: BACnet–Modbus Network Gateway User Guide 1 | Page
Relevant for model BB3-7101-TZ
Compatible exclusively with the Temperzone UC8
Revision
Date
Notes
1
June 2023
Initial Release

BB3-7101-TZ: BACnet–Modbus Network Gateway User Guide 2 | Page
1Introduction............................................................................................................... 4
1.1 Application of the BB3-7101-TZ .....................................................................................4
2Connecting Gateway for the First Time.......................................................................5
2.1 Connectors and Indicators .............................................................................................5
2.2 Opening the Web User Interface.....................................................................................6
2.3 Changing the Gateway IP Address.................................................................................7
3Local Objects............................................................................................................. 7
3.1 Behaviour of Input vs Output Objects ............................................................................7
3.2 Local Objects Reliability Codes ......................................................................................8
3.3 Analog Objects ................................................................................................................8
3.3.1 Analog Input Objects ...............................................................................................8
3.3.2 Analog Output Objects ............................................................................................9
3.3.3 Analog Value Objects ............................................................................................10
3.4 Binary Objects................................................................................................................11
3.4.1 Binary Input Objects...............................................................................................11
3.4.2 Binary Output Objects............................................................................................11
3.4.3 Binary Value Objects..............................................................................................11
3.5 Multistate Objects .........................................................................................................13
3.5.1 Multistate Input Objects ........................................................................................13
3.5.2 Multistate Output Objects .....................................................................................13
3.5.3 Multistate Value Objects .......................................................................................13
4Configuring Gateway as a BACnet Device ................................................................. 15
4.1 Device Object Parameters ............................................................................................15
4.2 Network Settings ...........................................................................................................16
4.3 BACnet Client Diagnostics............................................................................................17
4.3.1 BACnet Error Code List..........................................................................................18
4.4 Configuring Gateway as a BACnet Server ...................................................................19
4.4.1 Server Configuration..............................................................................................19
4.4.2 Accessing Local Objects.......................................................................................19
4.5 Configuring BBMD.........................................................................................................21
4.5.1 Registering as a Foreign Device ...........................................................................22
4.5.2 Allowing Other Devices to Register Locally .........................................................23
4.5.3 Broadcast Distribution Table ................................................................................24
4.5.4 User Login Password.............................................................................................24

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5Troubleshooting ...................................................................................................... 25
5.1 BACnet IP Troubleshooting ..........................................................................................25
5.1.1 Most Common Problems ......................................................................................25
5.1.2 Using Network Discovery Tool..............................................................................25
6Appendices.............................................................................................................. 29
6.1 Appendix A: Hardware Details......................................................................................29
6.1.1 Wiring......................................................................................................................29
6.1.2 Front Panel LED Indicators....................................................................................30
6.1.3 RS-485 Line Termination & Bias ...........................................................................31
6.2 Appendix B: BACnet Object Property Codes ...............................................................31
6.3 Appendix C: SSL Certificates for Secure Web (HTTPS)..............................................40
6.3.1 X.509 Auto-Certificate Generation........................................................................40

BB3-7101-TZ: BACnet–Modbus Network Gateway User Guide 4 | Page
The Babel Buster 3: BB3-7101-TZ is a BACnet gateway device that converts the Temperzone
unit’s UC8 Modbus RTU communication to BACnet IP protocol. This manual provides
instructions for operating and setting up the BB3-7101-TZ to communicate with Temperzone
units using BACnet IP communication protocol.
The BB3-7101-TZ gateway serves as a BACnet IP client for a Modbus RTU master or slave.
The BB3-7101-TZ can be considered as a data server with multiple network ports that have
access to the internal database. The BB3-7101-TZ is not a router –BACnet devices cannot
interact directly with Modbus devices or vice versa. Both BACnet and Modbus have access
to the internal data objects which are updated according to rules defined by Temperzone.

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2
Follow these steps to connect to the BB3-7101-TZ.
1. Connect power cables:
Apply 12-24VDC or 24VAC to the terminal marked “POWER”.
Apply common or ground to one of the terminals marked “GND”.
2. Connect a CAT5 cable between the RJ-45 jack on the gateway and your network
switch or hub.
Note: You may be unable to connect directly to your PC unless you use a “crossover” cable (or your PC
supports auto-MDX, which many newer laptops do).
3. Apply power.
A blue LED inside the case should light, showing power is present.
If the link LED (yellow) on the RJ-45 (CAT5) jack is not illuminated, check your Ethernet cable
connections. Both link (yellow) and activity (green) LEDs on the RJ-45 jack will be illuminated
solidly for a short time during boot-up. The entire bootup process will take 1-2 minutes,
during which time you will not be able to connect with a browser.
Refer to 6.1 Appendix A: Hardware Details for additional detail pertaining to connections
and indicators as well as optional internal jumper settings.

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The default IP address as shipped is 10.0.0.101. Open your browser and enter
“http://10.0.0.101/” in the address bar. You should see a page with the “Babel Buster 3 &
Temperzone” header as shown below. The model should show “BB3-7101-TZ”. From this
point, you will find help on each page on the website contained within the product.
If your PC is not already on the 10.0.0.x domain, and you are unable to connect, you may
need to temporarily change your computer’s IP address to a static IP address “10.0.0.x”
where “x” is any number except 101. Your subnet mask should also be set to 255.255.255.0.
When you click on any of the page tabs such as ‘System’, you will be asked for a username
and password. The only login as shipped is:
Username: system
Password: admin

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To change the IP address of the gateway, go to the ‘System’ tab and navigate to the
‘Network’page under ‘Settings’. The following page should appear.
Change the IP address, subnet mask and gateway if applicable. Click Change IP to save the
changes. Programming this into flash memory takes around half a minute. The new IP
address will only take effect following the next system restart or power cycle.
When considering input and output values you should think of the BACnet system as the
frame of reference rather than the BB3-7101-TZ device.
An input will receive input to the system from the device and so be a read only value. The
value will be displayed in either analog form, binary form or multistate form.
An output will send data from the system to the device and so be a writable value. The value
shall be provided as either analog form, binary form or multistate form.
An object can be either an input or an output and is generally both read and write. The values
will be read or written in either analog form, binary form or multistate form.

BB3-7101-TZ: BACnet–Modbus Network Gateway User Guide 8 | Page
Reliability codes may be any of the following:
Modbus client/master, no response from slave (64)
Modbus client/master, crc error (65)
Modbus exception, illegal function code (66)
Modbus exception, illegal data address (67)
Modbus exception, illegal data value (68)
Modbus exception, code+65, rarely used (69..79)
Local device, configuration property fault (80)
Faulty Modbus packet (81)
BACnet IP client, device timeout (82)
BACnet IP client, error returned by server (83)
Status flags A, B, C & D indicate the following, 0 meaning not true, 1 meaning true:
A = in alarm
B = fault
C = overridden
D = out of service
The source of data for an Analog Input object will typically be reading from the UC8
Controller. These values are Read Only. They may appear editable, however there is no way
to save any changes made on site.
The object name, units, value, and status are shown for the object number entered at the top
of the page. Click ‘Prev/Next’to scroll through the list. Click ‘Refresh’to update the page.
The object may be set Out of Service by checking that box and clicking Update. The present
value may be changed by entering a value, checking Force, and clicking Update.

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The source of data for an Analog Input object will typically be reading from some other
BACnet or Modbus device via the map indicated by the Device Link. The mapped device will
be polled at the rate specified by the Read Map.
Out of Service means polling of the mapped remote device will stop. While out of service, the
present value may be written by the BACnet client. Data may be forced via this web page at
any time but will be overwritten by the next mapped client update unless the object is out of
service.
Device link will indicate RTU, followed by R for read or W for write, and a number which is the
map number in the table of read or write maps for mapping to this BACnet object. The
designation R means read from a UC8 controller, and W means write to a UC8 controller.
The destination of data for an Analog Output object will be from a UC8 controller. These may
appear editable, however there is no way to save any changes made on site.
The object name, units, value, and status are shown for the object number entered at the top
of the page. Click Prev/Next to scroll through the list. Click Refresh to update the page.
The destination of data for an Analog Output object will be writing to the UC8 controller via
the map indicated by the Device Link. The UC8 controller will be updated upon change of
source data and/or periodically as defined by the Write Map.
The Analog Output object is command able, meaning the BACnet client must write both a
value and a priority level for that value. The highest-level value will be the one written to the
remote device (if one is mapped). If all values are relinquished, the relinquish default value
will be written to the remote device.
To set an output object manually from this page, check the Force box, enter a value in the
Present Value window, and select a priority level to assign to your forced value.
Then click Update. To return a given priority level to NULL, simply type the word NULL in the
Present Value window, check Force, and click Update.
Out of service means the mapped remote device will not be written to. Values written by the
BACnet client will be retained, but only applied when this object is placed back in service. At
that time, the highest priority value will be written to the remote device.
Reliability codes indicate errors as itemized on the tabular object list.

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Analog Value objects may be both a source and destination for a UC8 controller. These may
appear editable, however there is no way to save any changes made on site.
The object name, units, value, and status are shown for the object number entered at the top
of the page. Click Prev/Next to scroll through the list. Click Refresh to update the page.
The object may be set Out of Service by checking that box and clicking Update. The present
value may be changed by entering a value, checking Force, and clicking Update.
Analog Value objects may be both a source and destination. The source of data for the
Value object will be reading from a remote device when associated with a Read Map. The
destination of data for the Value object will be writing to a UC8 Controller when associated
with a Write Map.
The Value object may be simultaneously associated with both Read and Write maps pointing
to the same remote device object. When this Value object receives new data (from any
source), this data will be written to the mapped remote device before any subsequent read
from the same device. Thus, the Value data is not discarded by the read operation before the
new data can be written.