Rockwell Automation Allen-Bradley PowerFlex 20-COMM-B User manual

BACnet MS/TP
Adapter
20-COMM-B
FRN 1.xxx
User Manual

Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application, Installation and
Maintenance of Solid State Controls (Publication SGI-1.1 available from your local
Rockwell Automation sales office or online at http://www.rockwellautomation.com/
literature) describes some important differences between solid state equipment and
hard-wired electromechanical devices. Because of this difference, and also because
of the wide variety of uses for solid state equipment, all persons responsible for
applying this equipment must satisfy themselves that each intended application of
this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or
consequential damages resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative
purposes. Because of the many variables and requirements associated with any
particular installation, Rockwell Automation, Inc. cannot assume responsibility or
liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of
information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written
permission of Rockwell Automation, Inc. is prohibited.
Throughout this manual, when necessary we use notes to make you aware of safety
considerations.
Important: Identifies information that is critical for successful application and
understanding of the product.
Allen-Bradley, PowerFlex, DPI, SCANport, DriveExplorer, DriveExecutive, DriveTools SP, and ControlFLASH are either
registered trademarks or trademarks of Rockwell Automation, Inc.
BACnet is a registered trademark of American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).
WARNING: Identifies information about practices or circumstances
that can cause an explosion in a hazardous environment, which may
lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances
that can lead to personal injury or death, property damage, or economic
loss. Attentions help you identify a hazard, avoid the hazard, and
recognize the consequences.
Shock Hazard labels may be located on or inside the equipment (e.g.,
drive or motor) to alert people that dangerous voltage may be present.
Burn Hazard labels may be located on or inside the equipment (e.g.,
drive or motor) to alert people that surfaces may be at dangerous
temperatures.

Summary of Changes
The information below summarizes the changes made to this manual
since its last release (May 2006):
The information below summarizes the changes made to this manual
since its last release (April 2006):
Description of Changes Page(s)
In the “Quick Start” section:
•In Step 4, removed connecting the adapter to the network.
•In Step 5, added two new sub-steps (B and C).
•Added a new Step 6 “Connect the adapter to the network.”
•Incremented old Steps 6 and 7 to Steps 7 to 8.
1-6
Reorganized Chapter 2:
•Moved the “Connecting the Adapter to the Drive” section after the
“Commissioning the Adapter” section.
•Moved the “Applying Power” section after the “Connecting the Adapter to
the Drive” section.
•In the “Applying Power” section, added three new subsections:
– “Start-Up Status Indications”
– “Verifying/Setting Key Adapter Parameters”
– “Configuring/Verifying Key Drive Parameters.”
•Moved the “Connecting the Drive/Adapter to the Network” section to the
end of the chapter.
Chapter 2
In Chapter 3, moved the “Setting the Device Instance Number” section after
the “Using the PowerFlex 7-Class HIM” section. Included additional
information to the “Setting the Device Instance Number” section.
3-3
Added new Appendix D “Routing Capability for Networked Drives.” D-1
Description of Changes Page(s)
In the Features section — first bullet, removed text “... and can be used with
the kit’s optional I/O board.” Also, added an Important statement regarding
this information.
1-2
In the Viewing the Adapter Configuration table, added a third bullet in the
Parameter 07 - [Baud Rate Act] row.
3-8
For Parameter 05 - [Flt Cfg Ref], corrected its detail information from being a
bit parameter to a numeric parameter.
B-2

soc-ii Summary of Changes

Table of Contents
Preface About This Manual
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Rockwell Automation Support. . . . . . . . . . . . . . . . . . . . . . . . P-2
Conventions Used in This Manual . . . . . . . . . . . . . . . . . . . . . P-2
Chapter 1 Getting Started
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Compatible Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Chapter 2 Installing the Adapter
Preparing for an Installation. . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Commissioning the Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Connecting the Adapter to the Drive . . . . . . . . . . . . . . . . . . . 2-6
Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Connecting the Drive/Adapter to the Network . . . . . . . . . . 2-10
Chapter 3 Configuring the Adapter
Configuration Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Using the PowerFlex 7-Class HIM . . . . . . . . . . . . . . . . . . . . 3-2
Setting the Device Instance Number . . . . . . . . . . . . . . . . . . . 3-3
Setting a Comm Loss Action . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Setting the Comm Loss Time. . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Setting the Baud Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Resetting the Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Viewing the Adapter Configuration . . . . . . . . . . . . . . . . . . . . 3-8
Chapter 4 Using BACnet Objects
Understanding BACnet Objects . . . . . . . . . . . . . . . . . . . . . . . 4-1
Basic Drive Operation on the Network . . . . . . . . . . . . . . . . . 4-2
Supported BACnet Objects . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

ii Table of Contents
Chapter 5 Troubleshooting
Understanding the Status Indicators . . . . . . . . . . . . . . . . . . . 5-1
PORT Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
MOD Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
NET A Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
NET B Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Viewing and Clearing Adapter Diagnostic Items. . . . . . . . . . 5-5
Viewing and Clearing Events. . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Appendix A Specifications
Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Regulatory Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Appendix B Adapter Parameters
About Parameter Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Parameter List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Appendix C Protocol Implementation Conformance Statement
(PICS)
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
BACnet Standardized Device Profile (Annex L) . . . . . . . . . . C-1
List all BACnet Interoperability Building Blocks Supported
(Annex K) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Segmentation Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Standard Object Types Supported . . . . . . . . . . . . . . . . . . . . . C-2
Data Link Layer Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Device Address Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Networking Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Appendix D Routing Capability for Networked Drives
Glossary
Index

Preface
About This Manual
Documentation can be obtained online at
http://www.rockwellautomation.com/literature.
Topic Page
Related Documentation P-1
Rockwell Automation Support P-2
Conventions Used in This Manual P-2
Related Documentation
For: Refer to: Publication
DriveExplorer™ http://www.ab.com/drives/driveexplorer, and
DriveExplorer online help (installed with the software)
—
DriveTools™ SP (includes
DriveExecutive™)
http://www.ab.com/drives/drivetools, and
DriveExecutive online help (installed with the software)
—
HIM HIM Quick Reference 20HIM-QR001…
PowerFlex®70 Drive
(Std. and enhanced control)
PowerFlex 70 User Manual
PowerFlex 70/700 Reference Manual
20A-UM001…
PFLEX-RM001…
PowerFlex®700 Drive*
PowerFlex®700 Ser. B Drive*
*Standard and vector control
PowerFlex 700 User Manual
PowerFlex 700 Series B User Manual
PowerFlex 70/700 Reference Manual
20B-UM001…
20B-UM002…
PFLEX-RM001…
PowerFlex®700H Drive PowerFlex 700H Installation Manual
PowerFlex 700H Programming Manual
PFLEX-IN006…
20C-PM001…

P-2 About This Manual
Rockwell Automation, Inc. offers support services worldwide, with over
75 sales/support offices, over 500 authorized distributors, and over 250
authorized systems integrators located throughout the United States
alone. In addition, Rockwell Automation, Inc. representatives are in
every major country in the world.
Local Product Support
Contact your local Rockwell Automation, Inc. representative for:
•Sales and order support
•Product technical training
•Warranty support
•Support service agreements
Technical Product Assistance
If you need to contact Rockwell Automation, Inc. for technical
assistance, please review the information in Chapter 5, Troubleshooting
first. If you still have questions, then access the Allen-Bradley Technical
Support web site at www.ab.com/support/abdrives.
The following conventions are used throughout this manual:
•Parameter names are shown in the format Parameter xx - [*]. The xx
represents the parameter number, and the * represents the parameter
name — for example, Parameter 01 - [Reset Module].
•Menu commands are shown in bold type face and follow the format
Menu > Command. For example, if you read “Select File > Open,”
you should click the File menu and then click the Open command.
•The firmware release is displayed as FRN X.xxx. The “FRN”
signifies Firmware Release Number. The “X” is the major release
number. The “xxx” is the minor update number.
•This manual provides information about the 20-COMM-B BACnet
MS/TP adapter and using it with PowerFlex 7-Class drives. The
adapter can be used with other products that support a DPI adapter,
such as the DPI External Comms Kit (20-XCOMM-DC-BASE).
Refer to the documentation for your product for specific information
about how it works with the adapter.
Rockwell Automation Support
Conventions Used in This Manual

Chapter 1
Getting Started
The 20-COMM-B BACnet MS/TP adapter is a communication option
intended for installation into a PowerFlex 7-Class drive. It can also be
used with other Allen-Bradley products that support an internal DPI ™
(Drive Peripheral Interface) adapter, such as the DPI External Comms
Kit (20-XCOMM-DC-BASE).
Figure 1.1 Components of the Adapter
Topic Page Topic Page
Components 1-1 Safety Precautions 1-4
Features 1-2 Quick Start 1-6
Compatible Products 1-3 Status Indicators 1-7
Required Equipment 1-3
Components
Item Part Description
➊Status Indicators Four LEDs that indicate the status of the network connection,
DPI, and the adapter. Refer to Chapter 5, Troubleshooting.
➋DPI Connector A 20-pin, single-row shrouded male header. An Internal Interface
cable connects to this connector and a connector on the drive.
➌Terminal Block A 3-pin terminal block with mating 3-pin linear plug connects
the adapter to the network.
➍TERM, -BIAS, and
+BIAS Switches
Switches for turning on/off the adapter’s internal termination
resistor and bias resistors. See Setting the TERM, -BIAS, and
+BIAS Switches on page 2-4 for details.
➎MAC Address
Switches
Switches for setting the MAC address. See Setting the MAC
Address on page 2-2 for details.
➊
➎
➌
➋
➍

1-2 Getting Started
The 20-COMM-B BACnet MS/TP adapter features the following:
•The adapter is normally mounted in the PowerFlex 7-Class drive. It
can also be installed in a DPI External Comms Kit
Important: Due to inherent operating limitations, the adapter cannot
be used with the kit’s optional I/O board.
•Switches let you:
–Set a MAC address before applying power to the drive.
–Turn on/off the adapter’s built-in termination resistor and bias
resistors for optimizing operation on the network.
•Captive screws secure and ground the adapter to the drive or, when
mounted in a DPI External Comms Kit, to the kit’s metal enclosure.
•A number of configuration tools can be used to configure the adapter
and connected drive. The tools include the PowerFlex HIM on the
drive and drive-configuration software such as DriveExplorer (version
3.01 or higher) or DriveExecutive (version 3.01 or higher).
•Status indicators report the status of drive communications, the
adapter, and network. They are visible when the drive cover is opened
or closed.
•Read/write access to parameters is available. You can configure and
monitor parameter values over the network.
•User-defined fault actions let you determine how the adapter and drive
respond to communication disruptions on the network.
Features

Getting Started 1-3
The 20-COMM-B BACnet MS/TP adapter is compatible with most
Allen-Bradley PowerFlex 7-Class (Architecture-Class) drives and other
products that support DPI. DPI is a second generation peripheral
communication interface and functional enhancement to SCANport. At
the time of publication, compatible products include:
Equipment Shipped with the Adapter
When you unpack the adapter, verify that the package includes:
User-Supplied Equipment
To install and configure the adapter, you must supply:
Compatible Products
•PowerFlex 70 drives (standard and enhanced control)
•PowerFlex 700 drives (standard and vector control)
•PowerFlex 700 Series B drives (standard and vector control)
•PowerFlex 700H drives
•DPI External Comms Kit
Required Equipment
❑One 20-COMM-B BACnet MS/TP adapter
❑A 2.54 cm (1 in.) and a 15.24 cm (6 in.) Internal Interface cable
(only one cable is needed to connect the adapter to the drive)
❑One 3-pin linear plug (plugged into the adapter socket)
❑This manual
❑A small flathead screwdriver
❑A shielded, twisted wire pair to connect the adapter to the network
❑A configuration tool, such as:
–PowerFlexHIM
– DriveExplorer (version 3.01 or higher)
– DriveExecutive stand-alone software (version 3.01 or higher) or
bundled with the DriveTools SP suite (version 1.01 or higher)
– Third-party network configuration software

1-4 Getting Started
Please read the following safety precautions carefully.
Safety Precautions
!
ATTENTION: Risk of injury or death exists. The PowerFlex drive
may contain high voltages that can cause injury or death. Remove
power from the PowerFlex drive, and then verify power has been
discharged before installing or removing an adapter.
!
ATTENTION: Risk of injury or equipment damage exists. Only
personnel familiar with drive and power products and the associated
machinery should plan or implement the installation, start up,
configuration, and subsequent maintenance of the product using an
adapter. Failure to comply may result in injury and/or equipment
damage.
!
ATTENTION: Risk of equipment damage exists. The adapter
contains ESD (Electrostatic Discharge) sensitive parts that can be
damaged if you do not follow ESD control procedures. Static control
precautions are required when handling the adapter. If you are
unfamiliar with static control procedures, refer to Guarding Against
Electrostatic Damage, Publication 8000-4.5.2.
!
ATTENTION: Risk of injury or equipment damage exists. If the
adapter is transmitting control I/O to the drive, the drive may fault when
you reset the adapter. Determine how your drive will respond before
resetting an adapter.
!
ATTENTION: Risk of injury or equipment damage exists.
Parameter 02 - [Comm Loss Action] lets you determine the action of
the adapter and connected PowerFlex drive if communications are
disrupted. By default, this parameter faults the PowerFlex drive. You
can set this parameter so that the drive continues to run. Precautions
should be taken to ensure that the setting of this parameter does not
create a risk of injury or equipment damage. When commissioning the
drive, verify that your system responds correctly to various situations
(for example, a disconnected cable).
!
ATTENTION: Risk of injury or equipment damage exists. When a
system is configured for the first time, there may be unintended or
incorrect machine motion. Disconnect the motor from the machine or
process during initial system testing.

Getting Started 1-5
!
ATTENTION: Risk of injury or equipment damage exists. Parameter
03 - [Comm Loss Time] lets you determine how long it will take the
adapter to detect network communication losses. By default, this
parameter sets the timeout to ten seconds. You can set it so that the
duration is shorter, longer, or disabled. When set to disabled, this also
disables adapter Parameter 02 - [Comm Loss Action]. Therefore, a
communications fault action will be ignored. Take precautions to ensure
that the setting does not create a risk of injury or equipment damage.
When commissioning the drive, verify that your system responds
correctly to various situations (for example, a disconnected cable).
!
ATTENTION: Risk of injury or equipment damage exists. The
examples in this publication are intended solely for purposes of
example. There are many variables and requirements with any
application. Rockwell Automation, Inc. does not assume responsibility
or liability (to include intellectual property liability) for actual use of
the examples shown in this publication.

1-6 Getting Started
This section is provided to help experienced users quickly start using the
adapter. If you are unsure how to complete a step, refer to the referenced
chapter.
Quick Start
Step Action Refer to…
1 Review the safety precautions for the adapter. Throughout this manual
2 Verify that the PowerFlex drive is properly installed. Drive User Manual
3 Commission the adapter.
Set a unique MAC address and, depending on where the
PowerFlex drive nodes are located on the network,
appropriately set the TERM, -BIAS, and +BIAS switches.
Chapter 2,
Installing the Adapter
4 Install the adapter.
Verify that the PowerFlex drive is not powered. Then,
connect the adapter to the drive using the Internal
Interface cable. Use the captive screws to secure and
ground the adapter to the drive.
When installing the adapter in a DPI External Comms
Kit, refer to the 20-XCOMM-DC-BASE Installation
Instructions (Publication No. 20COMM-IN001…)
supplied with the kit.
Chapter 2,
Installing the Adapter
5 Apply power to the adapter and verify key settings.
A. The adapter receives power from the drive. Verify
that the adapter is installed correctly and then apply
power to the drive. The PORT status indicator should
be solid green. If it is red, there is a problem. Refer to
Chapter 5, Troubleshooting.
B. Verify/set key adapter parameters.
C. Configure/verify key drive parameters.
Chapter 2,
Installing the Adapter
6 Connect the adapter to the network.
Verify that the PowerFlex drive is not powered. Then,
connect the adapter to the network using a shielded,
twisted wire pair.
Chapter 2,
Installing the Adapter
7 Configure the adapter for your application.
Set adapter parameters for the following functions as
required by your application:
•Fault actions
•Baud rate
Chapter 3,
Configuring the Adapter
8 Set up the controller to communicate with the
adapter.
Use the controller’s programming software to program
the controller.
Instruction manual for
your controller’s
programming software

Getting Started 1-7
The adapter uses four status indicators to report its operating status. They
can be viewed on the adapter or through the drive cover (Figure 1.2).
Figure 1.2 Status Indicators (location on drive may vary)
After installing the adapter and applying power to the drive, refer to
Start-Up Status Indications on page 2-8 for possible start-up status
indications and their descriptions.
Status Indicators
Item Adapter Status
Indicator Name
➊PORT
➋MOD
➌NET A
➍NET B
PWR
STS
PORT
MOD
NET A
NET B
➊
➋
➌
➍
➊
➍
➋
➌

1-8 Getting Started
Notes:

Chapter 2
Installing the Adapter
Chapter 2 provides instructions for installing the adapter in a PowerFlex
7-Class drive. This adapter can also be installed in a DPI External
Comms Kit. In this case, refer to the 20-XCOMM-DC-BASE Installation
Instructions (Publication No. 20COMM-IN001…) supplied with the kit.
Before installing the adapter, verify that you have all required
equipment. Refer to Required Equipment on page 1-3.
To commission the adapter, you must set a unique MAC address and,
depending on where the PowerFlex drive nodes are located on the
network (starting and ending network nodes versus other node
locations), appropriately set the TERM, -BIAS, and +BIAS switches.
Important: New settings are recognized only when power is applied to
the adapter or it is reset. If you change a switch setting,
cycle power or reset the adapter to invoke the change.
Topic Page
Preparing for an Installation 2-1
Commissioning the Adapter 2-1
Connecting the Adapter to the Drive 2-6
Applying Power 2-8
Connecting the Drive/Adapter to the Network 2-10
Preparing for an Installation
Commissioning the Adapter
!
ATTENTION: Risk of equipment damage exists. The adapter
contains ESD (Electrostatic Discharge) sensitive parts that can be
damaged if you do not follow ESD control procedures. Static control
precautions are required when handling the adapter. If you are
unfamiliar with static control procedures, refer to Guarding Against
Electrostatic Damage, Publication 8000-4.5.2.

2-2 Installing the Adapter
Setting the MAC Address
Set the MAC address using the MAC Address switches (Figure 2.1).
Refer to Table 2.A for specific MAC address switch settings.
Important: Each node on the network must have a unique MAC
address. The MAC address must be set before power is
applied because the adapter uses the MAC address it detects
when it first receives power. To change a MAC address, you
must set the new value. Then remove and reapply power to
the adapter, or reset the adapter.
Figure 2.1 Setting the Adapter MAC Address Switches
Switches Description Default
SW1 Least Significant Bit (LSB) of MAC Address 0
Node 0
SW2 Bit 1 of MAC Address 0
SW3 Bit 2 of MAC Address 0
SW4 Bit 3 of MAC Address 0
SW5 Bit 4 of MAC Address 0
SW6 Bit 5 of MAC Address 0
SW7 Most Significant Bit (MSB) of MAC Address 0
SW8 Mode (reserved for future use) — —
UP = 1 = OPEN
MAC Address Switches
(SW1 - SW7)
Mode Switch (SW8)
Reserved for future use
1
5
678
4
3
2
TIP: The MAC address can be verified using a PowerFlex 7-Class HIM,
DriveExplorer software, or DriveExecutive software to view Parameter
08 - [MAC Address] or Diagnostic Item number 16 (page 5-6).
Table 2.A MAC Address Switch Settings (UP = 1 = OPEN)
MAC
Address
Switch Setting MAC
Address
Switch Setting
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW1 SW2 SW3 SW4 SW5 SW6 SW7
0 0000000 4 0010000
1 1000000 5 1010000
2 0100000 6 0110000
3 1100000 7 1110000

Installing the Adapter 2-3
8 0001000 56 0001110
9 1001000 57 1001110
10 0101000 58 0101110
11 1101000 59 1101110
12 0011000 60 0011110
13 1011000 61 1011110
14 0111000 62 0111110
15 1111000 63 1111110
16 0000100 64 0000001
17 1000100 65 1000001
18 0100100 66 0100001
19 1100100 67 1100001
20 0010100 68 0010001
21 1010100 69 1010001
22 0110100 70 0110001
23 1110100 71 1110001
24 0001100 72 0001001
25 1001100 73 1001001
26 0101100 74 0101001
27 1101100 75 1101001
28 0011100 76 0011001
29 1011100 77 1011001
30 0111100 78 0111001
31 1111100 79 1111001
32 0000010 80 0000101
33 1000010 81 1000101
34 0100010 82 0100101
35 1100010 83 1100101
36 0010010 84 0010101
37 1010010 85 1010101
38 0110010 86 0110101
39 1110010 87 1110101
40 0001010 88 0001101
41 1001010 89 1001101
42 0101010 90 0101101
43 1101010 91 1101101
44 0011010 92 0011101
45 1011010 93 1011101
46 0111010 94 0111101
47 1111010 95 1111101
48 0000110 96 0000011
49 1000110 97 1000011
50 0100110 98 0100011
51 1100110 99 1100011
52 0010110 100 0010011
53 1010110 101 1010011
54 0110110 102 0110011
55 1110110 103 1110011
Table 2.A MAC Address Switch Settings (UP = 1 = OPEN) (Continued)
MAC
Address
Switch Setting MAC
Address
Switch Setting
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW1 SW2 SW3 SW4 SW5 SW6 SW7

2-4 Installing the Adapter
Setting the TERM, -BIAS, and +BIAS Switches
The adapter’s TERM, -BIAS, and +BIAS switches (Figure 2.2) are used
to turn on/off its built-in termination resistor and bias resistors.
Figure 2.2 Setting the TERM, -BIAS, and +BIAS Switches
Since nodes on a BACnet MS/TP network are typically a mix of
Allen-Bradley PowerFlex drives and other brands of building automation
products, the network node locations for the PowerFlex drives will
determine how their adapter’s TERM, -BIAS, and +BIAS switches
should be set.
104 0001011 116 0010111
105 1001011 117 1010111
106 0101011 118 0110111
107 1101011 119 1110111
108 0011011 120 0001111
109 1011011 121 1001111
110 0111011 122 0101111
111 1111011 123 1101111
112 0000111 124 0011111
113 1000111 125 1011111
114 0100111 126 0111111
115 1100111 127 1111111
Table 2.A MAC Address Switch Settings (UP = 1 = OPEN) (Continued)
MAC
Address
Switch Setting MAC
Address
Switch Setting
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW1 SW2 SW3 SW4 SW5 SW6 SW7
Switches Description Default
SW1 Turns on/off the termination resistor Up (Off)
SW2 Turns on/off the -bias resistor Up (Off)
SW3 Turns on/off the +bias resistor Up (Off)
SW4 Reserved (not used) —
UP = OFF
TERM Switch (SW1)
-BIAS Switch (SW2) +BIAS Switch (SW3)
RSRV Switch (SW4)
Reserved for future use
1
4
3
2