Contemporary BASRT-B User manual

BASRT-B
BACnet® Multi-Network Router
User Manual
# UM-BASRTB00-AA1

UM-BASRTB00-AA1
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Trademarks
BASautomation, Contemporary Controls and CTRLink are registered trademarks of
Contemporary Control Systems, Inc. BACnet is a registered trademark of the American Society
of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Powered by Sedona Framework
is a trademark of Tridium, Inc. Other product names may be trademarks or registered
trademarks of their respective companies.
Copyright
© Copyright 2017, by Contemporary Control Systems, Inc. All rights reserved. No part of this
publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or
translated into any language or computer language, in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior written
permission of:
Contemporary Control Systems, Inc.
Tel:
[phone]
2431 Curtiss Street
Fax:
[phone]
Downers Grove, Illinois 60515 USA
E-mail:
[e-mail]
Contemporary Controls Ltd
Tel:
[phone]
14 Bow Court
Fax:
[phone]
Fletchworth Gate
E-mail:
[e-mail]
Coventry CV5 6SP UK
Contemporary Controls (Suzhou) Co. Ltd
Tel:
[phone]
11 Huoju Road
Fax:
[phone]
Industrial Park — Science & Technology
E-mail:
[e-mail]
New District, Suzhou
PR China 215009
Contemporary Controls GmbH
Tel:
[phone]
Fuggerstraße 1 B
Fax:
[phone]
D-04158 Leipzig Germany
E-mail:
[e-mail]
Disclaimer
Contemporary Control Systems, Inc. reserves the right to make changes in the specifications of
the product described within this manual at any time without notice and without obligation of
Contemporary Control Systems, Inc. to notify any person of such revision or change.
WARNING — This is a Class A product as defined in EN55022.
In a domestic environment this product may cause radio interference
in which case the user may be required to take adequate measures.

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Contents'
1!Introduction ............................................................................................................... 5!
2!Specifications ............................................................................................................ 6!
2.1!Electrical .............................................................................................................. 6!
2.2!Environmental ..................................................................................................... 6!
2.3!Mounting ............................................................................................................. 6!
2.4!Functional ............................................................................................................ 6!
2.5!Regulatory Compliance ....................................................................................... 6!
2.6!Electromagnetic Compatibility ............................................................................. 6!
2.7!Connectors .......................................................................................................... 7!
2.8!Mechanical .......................................................................................................... 7!
3!Power ........................................................................................................................ 8!
3.1!POWER SUPPLY PRECAUTIONS ..................................................................... 8!
3.2!Limited Power Sources ..................................................................................... 10!
4!LEDs........................................................................................................................ 11!
5!Operation ................................................................................................................ 12!
5.1!MS/TP Port ........................................................................................................ 12!
!EIA-485 Bias and Termination Jumpers ..................................................... 13!
5.2!Ethernet Port ..................................................................................................... 13!
5.3!Reset Switch ..................................................................................................... 13!
6!Webpage Configuration .......................................................................................... 14!
6.1!Device Parameters ............................................................................................ 20!
!Device Name (Default Value = BASRT-Bxxxxxx) ..................................... 20!
!Device Instance (Default Value = 0) .......................................................... 20!
!Device Location (Default Value = location) ................................................ 20!
6.2!BACnet Ethernet (0 disables BACnet Ethernet) ............................................... 20!
!Ethernet Network (Default Value = 0) ....................................................... 20!
6.3!BACnet/IP Parameters ...................................................................................... 21!
!BACnet/IP UDP Port (Default Value = 0xBAC0) ...................................... 21!
!BACnet/IP Network (Default Value = 1) .................................................... 21!

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!IP Assigned By (Default Value = FIXED) ................................................... 21!
!IP Address (Default Value = 192.168.92.68) ............................................ 21!
!IP Subnet (Default Value = 24) ................................................................. 21!
!IP Gateway (Default Value = 192.168.92.1) ............................................. 21!
6.4!MS/TP Parameters ............................................................................................ 22!
!MS/TP MAC (Default Value = 00) ............................................................. 22!
!MS/TP Network (Default Value = 2001) ................................................... 22!
!Max Masters (Default Value = 127) .......................................................... 22!
!Max Info Frames (Default Value = 100) .................................................... 22!
!MS/TP Baud Rate (Default Value = 38400) .............................................. 22!
!MS/TP Tolerance (Default Selection = Strict) ........................................... 22!
7!Firmware Updates ................................................................................................... 23!
8!Advanced Features ................................................................................................. 24!
8.1!Advanced Configuration Page .......................................................................... 24!
8.2!Status Screen .................................................................................................... 26!
8.3!Security Screen ................................................................................................. 27!
9!Warranty .................................................................................................................. 28!
10!Returning Products for Repair .............................................................................. 29!
11!Declaration of Conformity ..................................................................................... 30!

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1 Introduction
The BASrouter provides stand-alone routing between BACnet networks such as BACnet/IP,
BACnet Ethernet, and BACnet MS/TP – thereby allowing the system integrator to mix BACnet
network technologies within a single BACnet internetwork. The router is configurable via its
internal webpage.
The BASRT-B comes in a metal case, is DIN-rail mounted and is powered from a 24 VAC/VDC
source. It has one optically isolated MS/TP port and one 10/100 Mbps Ethernet Auto-MDIX port.
The MS/TP port offers a 3-pin terminal block with a removable plug for the EIA-485 connection.
Up to 254 master and slave devices can be addressed through this port — however, the attached
segment can accommodate up to 31 full-load devices. MS/TP baud rates: 9600, 19200, 38400,
and 76800 are supported.
The Ethernet port offers a shielded RJ-45 connector. Through auto-negotiation and Auto-
MDIX, it automatically matches its duplex setting, data rate and communication pair usage to
whatever is needed by the attached equipment. Thus, only a straight-through CAT5 cable is
needed for connection.
When enabled from the web page, a DHCP client feature allows the BASrouter to obtain an IP
address from a DHCP server on the network automatically. FIXED IP address is the default
setting. DHCP setting should be used with caution when BBMD and FDR are enabled because
of the dynamic IP addressing nature of the DHCP protocol. If you are unsure use FIXED IP
setting.
The BASrouter features a user-accessible momentary switch to reset the IP address, subnet
mask, gateway address, and User ID/Password to the factory defaults.
Three LEDs are present: A power LED glows green when proper power connection is provided.
The Ethernet LED glows green for 100 Mbps operation and yellow for 10 Mbps and flashes to
indicate activity. A green LED flashes when MS/TP traffic is received. If the MS/TP LED is off, but
the BASrouter is powered and connected to a MS/TP network, could be an indicator that the
BACnet MS/TP network is down.
Each unit complies with Class A radiated and conducted emissions as defined by EN55022 and
CFR 47, Part 15, and is intended for use in non-residential areas.
A BACnet Broadcast Management Device (BBMD) within the router can be enabled to allow
BACnet communication across routed IP networks, that is a network comprised of multiple IP
subnets. If all IP devices use the same subnet, this functionality can be left disabled. The router
also supports Foreign Device Registration.
Attention: Be cautious when using BBMD and FDR in conjunction with DHCP IP addressing.
Depending on your DHCP server settings, obtained IP address may change. If you are unsure,
use FIXED IP addressing in the BASrouter.

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2 Specifications
2.1 Electrical
(Class 2 Circuits Only)
INPUT DC AC
Voltage (±10%): 24 V 24 V
Power: 2 W 4 VA
Frequency: N/A 47–63 Hz
2.2 Environmental
Operating temperature: 0°C to 60°C
Storage temperature: –40°C to +85°C
Relative humidity: 10–95%, non-condensing
2.3 Mounting
TS-35 DIN-rail
2.4 Functional
Ethernet MS/TP
Physical Layer: 10BASE-T EIA-485
100BASE-TX
Cable length limit: 100 m 1200 m (for AWG 18)
MS/TP Baud rate (bps): 9600, 19200, 38400, 76800
MS/TP node limit: 254 devices total,
31 full-load devices per segment
MS/TP LED: flashing green = receive MS/TP activity
Ethernet LED: green = 100 Mbps
yellow = 10 Mbps
flashing = activity
2.5 Regulatory Compliance
CE Mark; RoHS; CFR47, Part 15 Class A
UL508 and C22.2 No. 142-M1987: Industrial Control Equipment
2.6 Electromagnetic Compatibility
Each unit complies with Class A radiated and conducted emissions as defined by EN55022 and
CFR 47, Part 15. This equipment is intended for use in non-residential areas.
WARNING — This is a Class A product as defined in EN55022.
In a domestic environment this product may cause radio interference
in which case the user may be required to take adequate measures.

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2.7 Connectors
3-pin (MS/TP) Pin Assignments
(Also displayed on product label)
RJ-45 (MDI Ethernet) Pin Assignments
1 TD + 3 RD +
2 TD – 6 RD –
(All other pins are unused.)
USB Mini B Connector (Aux)
This connector is only used for firmware upgrades.
EIA-485 Bias and Termination Jumpers
U Install jumper to apply pull-up bias.
T Install jumper to terminate bus.
D Install jumper to apply pull-down bias.
(All jumpers are installed by default.)
2.8 Mechanical
Figure 2 — RJ-45 Connector
Figure 3 — USB
Connector
Figure 4 — Internal
Jumpers
Figure 1 — 3-pin Connector
Figure 5 — Product Dimensions

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3 Power
The BASRT-B requires 24 VAC or 24 VDC (see Figure 6) while drawing no more than 4 VA of
power. The recommended conductor size is 16–18 AWG. COM is directly connected to zero
volts and the chassis is DC isolated from zero volts. Input connections are reverse-polarity
protected.
Figure 6 — Power Options
WARNING: Powering devices can present hazards. Read the following text carefully.
3.1 POWER SUPPLY PRECAUTIONS
Internally, the router utilizes a half-wave rectifier and therefore can share the same AC power
source with other half-wave rectified devices. Sharing a common DC power source is also
possible. Sharing AC power with full-wave rectified devices is NOT recommended. Full-wave
rectified devices usually require a dedicated AC power source that has a secondary elevated
above ground. Both secondary connections are considered HOT.
AC power sources that power several half-wave devices have a common secondary connection
called either COMMON, LO, or GROUND. This connection might be tied to frame ground or
earth. The other side of the secondary is considered the HOT or HI side of the connection.
Connect the HOT side of the secondary to either the HI or the HIB input on the router and the
LO side to COM on the router. All other half-wave devices sharing the same AC power source
need to follow the same convention. When using a DC power source, connect the positive
terminal of the source to either the HI or the HIB input and the negative terminal to COM on the
router. Reversing polarity to the router will not damage the router. If shielded cable is used, it is
recommended to tie all shield segments together and connect one of the shield ends to chassis
while taping back the other.
For MS/TP devices that share a power source with the BASRT-B, see Figure 7 for proper 2-wire
bus connections and Figure 8 for proper 3-wire bus connections.

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WARNING: Devices powered from a common AC source could be damaged if a mix of half-
wave and full-wave rectified devices exist. If you are not sure of the type of rectifier used by
another device, do not share the AC source with it.
Figure 7 — 2-wire MS/TP Bus with Shared Power Source
Figure 8 — 3-wire MS/TP Bus with Shared Power Source

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For MS/TP devices that use a power source separate from the BASRT-B, see Figure 9 for
proper 2-wire bus connections and Figure 10 for proper 3-wire bus connections.
Figure 9 — 2-wire MS/TP Bus with Separate Power Sources
Figure 10 — 3-wire MS/TP Bus with Separate Power Sources
3.2 Limited Power Sources
The router should be powered by a limited power source complying with the requirements of the
National Electric Code (NEC) article 725 or other international codes meeting the same intent of
limiting the amount of power of the source. Under NEC article 725, a Class 2 circuit is that
portion of the wiring system between the load side of a Class 2 power source and the connected
equipment. For AC or DC voltages up to 30 volts, the power rating of a Class 2 power source is
limited to 100 VA. The transformer or power supply complying with the Class 2 rating must carry
a corresponding listing from a regulatory agency such as Underwriters Laboratories (UL).

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4 LEDs
Power glows green if power supplied to the unit is proper
Ethernet glows solid for a valid link (green for 100 Mbps or yellow
for 10 Mbps) and flashes to show activity
MS/TP flashes green when receiving valid MS/TP traffic

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5 Operation
5.1 MS/TP Port
The MS/TP port uses an optically isolated EIA-485 transceiver connected to a 3-pin removable
connector (Figure 1). The transceiver + and – lines tie to + and – pins of the connector. The SC
pin ties to the transceiver ground. You MUST connect the SC pin to the MS/TP segment signal
common — or MS/TP communication will fail!
In Figure 11 a simplified schematic of the isolated EIA-485 transceiver is shown. Notice that the
transceiver common (SC) is electrically isolated from the router power supply common (COM)
through the use of opto-isolators and an isolated DC-DC converter. An isolated EIA-485
transceiver offers less chance of damage to the transceiver from high common-mode voltages,
but there is still a risk. Surge suppression is applied between the two differential inputs and
between each input and ground. Since the transceiver is electrically isolated, the transceiver
circuit common must be brought out for connection to the other devices on the MS/TP network.
This is accomplished by pin SC. The differential pair is labelled + and – and corresponds to the
same designations in the BACnet MS/TP standard. This requires a three-wire connection to the
MS/TP network. Connecting other isolated MS/TP devices is no problem since each device
requires a 3-wire connection. Just make corresponding connections. For non-isolated MS/TP
devices, usually only a 2-wire connection is provided. The third wire is the power supply
common. In this situation, the SC connection MUST be made to the power supply common of
the non-isolated device. Refer to the device vendor instructions for connecting such a device.
In a router application where one connection is made to Ethernet and the other to MS/TP, the
location of the router is probably at the end of the MS/TP bus segment and therefore both bias
and termination must be applied to the segment end. The router is shipped with bias and
termination applied, but this can be changed by removing three jumpers inside of the case. This
should be done if the router is to be connected anywhere between the end MS/TP devices.
Figure 11 — Isolated EIA-485 Transceiver Circuitry
The router can address 254 MS/TP devices and supports 31 full-load devices on the local bus
at rates of 9600, 19200, 38400, or 76800 bps.

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EIA-485 Bias and Termination Jumpers
After removing the BASRT-B cover, three jumpers are accessible on a 6-pin jumper block located
near the MS/TP connector. These impart 604 ohms of pull-up and pull-down bias at jumpers U
and D, and 130 ohms of termination impedance for the T jumper. With all three jumpers
installed, the effective termination resistance is 120 Ω — consistent with the BACnet standard. If
the BASRT-B is not installed at the end of a segment, remove all the jumpers and install 120 Ω
at the far end of the bus.
5.2 Ethernet Port
This port offers a shielded RJ-45 connector. Through auto-negotiation and Auto-MDIX, it
automatically matches its duplex setting, data rate and communication pair usage to whatever is
needed by the attached equipment. Thus, any CAT5 cable (cross-over or straight-through) may be
used to connect to the Ethernet port.
5.3 Reset IP Switch
The Reset IP switch is located on the front, underneath RJ-45 connector. To reset the router to
its default values (except for configuration settings), press and hold the Reset IP button using a
paper clip for at least 3 seconds while the router is powered. Remove power and restore power
again to complete the reset IP, User ID, and Password procedure to factory-programmed
default values as shown below. Default User Name is admin and default Password is admin.

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6 Webpage Configuration
The BASrouter contains an interactive web server accessible from any Internet-compatible PC
on the local network with recent versions of most standard web browsers such as Microsoft
Internet Explorer, Microsoft Edge, Mozilla Firefox, or Google Chrome installed. It is factory-
programmed with a default fixed IP address of 192.168.92.68 and a Class C subnet mask of
255.255.255.0 (/24).
Figure 12 shows the setup for initial network configuration. Using BASRT-B, a computer for
configuration, and a connection to the MS/TP network.
To configure the router, connect it to a computer with an Ethernet cable and use a standard web
browser. For initial configuration, the PC chosen for the procedure should temporarily have its IP
address modified to match the default subnet of the BASrouter as described on page 15.
The IP configuration example suggests an IP address of 192.168.92.69 for the PC, but the final
octet of the address could be any value from 3 to 254 — except for 68 which is used by the
router. After the IP address of the PC has been set to the same subnet as the BASrouter, a
standard web browser can access the BASrouter’s web page.
Figure 12 — Setup for Initial IP Address Configuration

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To set your computer’s IP static address in Windows 7 or Windows 8.x or
Windows 10:
1. Type network and sharing into the search box in the Start Menu
2. Select Network and Sharing Center (which could also be found in Control Panel)
3. Click on Change adapter settings

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4. Right-click on your network adapter and chose Properties
5. In the Local Area Connection Properties window highlight Internet Protocol Version 4
(TCP/IPv4) then click the Properties button.

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6. Your computer was most likely set for DHCP (Obtain an IP address automatically) select the
radio button Use the following IP address and enter in 192.168.92.69 (for example) in IP
address. Click on Subnet mask and 255.255.255.0 will be entered for you automatically. For
Default gateway enter 192.168.92.1. Click OK and your network adapter IP address has been
set.
To set your computer’s IP static address in Windows XP:

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1. Click Start Menu
2. Select Network Places
3. Click on View network connections
4. Open Local Area Connection
5. Choose Properties
6. Double-click to open Internet Protocol
(TCP/IP) settings
7. Select Use the following IP address
Figure 13 — Steps for Changing the IP Address of the PC Used for Setup

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After entering the router’s IP address into your browser’s address field, you will see the
Authentication Screen of Figure 14.
The default value of both the User Name and Password is admin
Figure 14 — Router Authentication Screen
After successfully logging in, the Router Configuration Page initially appears with the default
values as shown below.
Figure 15 — Router Configuration Page with Default Values
Each configuration parameter is explained on the following pages. When Save Changes button
is clicked, the parameters are stored to non-volatile memory, the unit will automatically reboot
(in a few seconds) and the changes will take effect.
Three buttons (Advanced, Status and Security) access more screens and are discussed in
Section 8.
0079EE

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6.1 Device Parameters
Device Name (Default Value = BASRT-Bxxxxxx)
The BASrouter’s Device Object Name can be configured in this field. It is required to be unique
throughout the BACnet network. It can be up to 20 characters and defaults to a unique name of
the form BASRT-BXXXXXX — where the Xs are replaced with the final six characters of the
router’s Ethernet MAC address.
Device Instance (Default Value = 0)
The router’s device instance is a 22-bit value (0–4,194,302). Do not use 4,194,303 which is
reserved by BACnet. Each BACnet device within the same BACnet internetwork must have a
unique device instance. One must be assigned to the BASRT-B.
Device Location (Default Value = location)
The Device Location can be configured in this field.
6.2 BACnet Ethernet (0 disables BACnet Ethernet)
Ethernet Network (Default Value = 0)
Most BACnet communication that is carried by Ethernet uses the BACnet/IP protocol. However,
there are still instances in which the older BACnet Ethernet protocol (ISO 8802-3) is found. The
BASRT-B allows these two protocols to communicate.
BACnet Ethernet uses Ethernet MAC addresses for station addressing — unlike BACnet/IP
which addresses messages by means of Internet Protocol (IP) addresses. Each Ethernet MAC
address (often called the physical address) is unique to the Ethernet network adapter. It is
permanently embedded into the adapter during manufacture and cannot be changed. It is
composed of six two-digit hexadecimal numbers (00–FF). An example of an Ethernet MAC
address is:
00-50-DB-00-79-EE
Each Ethernet network adapter has the ability to store an IP address that is changeable. This
IP address is typically represented as four decimal values (each is 0–255) separated by dots.
Often called the dotted quad format, an example is:
192.168.92.1
NOTE: Although they may share the same Ethernet physical network, BACnet Ethernet
devices as well as BACnet/IP devices must have their own unique network number and these
two networks cannot communicate unless their messages pass through a router. These
network numbers must be in the range of 1–65534 (0 and 65535 are reserved). If the BACnet
Ethernet network value is left at its default value of 0, the BACnet Ethernet function within the
BASRT-B will be disabled. Also, to prevent erratic traffic due to message loops, an IP subnet