Rockwell Automation 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.

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.

Important: Identifies information that is critical for successful application and

understanding of the product.

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.

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).

Summary of Changes

The information below summarizes the changes made to this manual since its last release (May 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.

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.

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.

Added new Appendix D “Routing Capability for Networked Drives.” D-1

1-6

Chapter

3-3

The information below summarizes the changes made to this manual since its last release (April 2006):

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.

In the Viewing the Adapter Configuration table, added a third bullet in the Parameter 07 - [Baud Rate Act] row.

For Parameter 05 - [Flt Cfg Ref], corrected its detail information from being a bit parameter to a numeric parameter.

1-2

3-8

B-2

soc-ii Summary of Changes

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

Topic Page

Rockwell Automation Support

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 first. If you still have questions, then access the Allen-Bradley Technical Support web site at www.ab.com/support/abdrives

5, Troubleshooting

Conventions Used in This Manual

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.

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).

Topic Page Topic Page

Components

Features 1-2 Quick Start 1-6

Compatible Products 1-3 Status Indicators 1-7

Required Equipment 1-3

1-1 Safety Precautions 1-4

Components

Figure 1.1 Components of the Adapter

➊

➋

➌

Item Part Description

Status Indicators Four LEDs that indicate the status of the network connection,

➊

DPI Connector A 20-pin, single-row shrouded male header. An Internal Interface

➋

Terminal Block A 3-pin terminal block with mating 3-pin linear plug connects

➌

TERM, -BIAS, and

➍

+BIAS Switches

MAC Address

➎

Switches

➍

➎

DPI, and the adapter. Refer to Chapter

cable connects to this connector and a connector on the drive.

the adapter to the network.

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.

Switches for setting the MAC address. See Setting the MAC

Address on page 2-2 for details.

5, Troubleshooting.

1-2 Getting Started

Features

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

• 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).

be used with the kit’s optional I/O board.

• 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.

Getting Started 1-3

Compatible Products

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:

• 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

Equipment Shipped with the Adapter

When you unpack the adapter, verify that the package includes:

❑ 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

User-Supplied Equipment

To install and configure the adapter, you must supply:

❑ A small flathead screwdriver

❑ A shielded, twisted wire pair to connect the adapter to the network

❑ A configuration tool, such as:

–PowerFlex HIM

– 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

Safety Precautions

Please read the following safety precautions carefully.

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

Quick Start

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.

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.

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.

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

B. Verify/set key adapter parameters.

C. Configure/verify key drive parameters.

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.

7 Configure the adapter for your application.

Set adapter parameters for the following functions as required by your application:

• Fault actions

• Baud rate

8 Set up the controller to communicate with the

adapter.

Use the controller’s programming software to program the controller.

5, Troubleshooting.

Chapter

Installing the Adapter

Chapter

Installing the Adapter

Chapter Installing the Adapter

Chapter 2, Installing the Adapter

Chapter 3, Configuring the Adapter

Instruction manual for your controller’s programming software

Getting Started 1-7

PWR

STS

PORT

MOD

NET A

NET B

Status Indicators

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)

➊ ➋

➌ ➍

➊ ➋

➌ ➍

Adapter Status

Item

Indicator Name

PORT

➊

MOD

➋

NET A

➌

NET B

➍

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.

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.

Topic Page

Preparing for an Installation

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

2-1

Preparing for an Installation

Before installing the adapter, verify that you have all required equipment. Refer to Required Equipment

on page 1-3.

Commissioning the Adapter

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.

ATTENTION: Risk of equipment damage exists. The adapter contains ESD (Electrostatic Discharge) sensitive parts that can be

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

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

for specific MAC address switch settings.

MAC Address Switches

(SW1 - SW7)

Switches Description Default

SW1 Least Significant Bit (LSB) of MAC Address 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) — —

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)

Address

MAC

SW1 SW2 SW3 SW4 SW5 SW6 SW7

0 0000000

1 1000000

2 0100000

3 1100000

Switch Setting

MAC

Address

4 0010000

5 1010000

6 0110000

7 1110000

Mode Switch (SW8) Reserved for future use

UP = 1 = OPEN

Node 0

Switch Setting

SW1 SW2 SW3 SW4 SW5 SW6 SW7

Installing the Adapter 2-3

Table 2.A MAC Address Switch Settings (UP = 1 = OPEN) (Continued)

MAC

Address

SW1 SW2 SW3 SW4 SW5 SW6 SW7

8 0 0 0 1 0 0 0 56 0 0 0 1 1 1 0

9 1 0 0 1 0 0 0 57 1 0 0 1 1 1 0

10 0 1 0 1 0 0 0 58 0 1 0 1 1 1 0

11 1 1 0 1 0 0 0 59 1 1 0 1 1 1 0

12 0011000

13 1011000

14 0111000

15 1111000

16 0 0 0 0 1 0 0 64 0 0 0 0 0 0 1

17 1 0 0 0 1 0 0 65 1 0 0 0 0 0 1

18 0 1 0 0 1 0 0 66 0 1 0 0 0 0 1

19 1 1 0 0 1 0 0 67 1 1 0 0 0 0 1

20 0010100

21 1010100

22 0110100

23 1110100

24 0 0 0 1 1 0 0 72 0 0 0 1 0 0 1

25 1 0 0 1 1 0 0 73 1 0 0 1 0 0 1

26 0 1 0 1 1 0 0 74 0 1 0 1 0 0 1

27 1 1 0 1 1 0 0 75 1 1 0 1 0 0 1

28 0011100

29 1011100

30 0111100

31 1111100

32 0 0 0 0 0 1 0 80 0 0 0 0 1 0 1

33 1 0 0 0 0 1 0 81 1 0 0 0 1 0 1

34 0 1 0 0 0 1 0 82 0 1 0 0 1 0 1

35 1 1 0 0 0 1 0 83 1 1 0 0 1 0 1

36 0010010

37 1010010

38 0110010

39 1110010

40 0 0 0 1 0 1 0 88 0 0 0 1 1 0 1

41 1 0 0 1 0 1 0 89 1 0 0 1 1 0 1

42 0 1 0 1 0 1 0 90 0 1 0 1 1 0 1

43 1 1 0 1 0 1 0 91 1 1 0 1 1 0 1

44 0011010

45 1011010

46 0111010

47 1111010

48 0 0 0 0 1 1 0 96 0 0 0 0 0 1 1

49 1 0 0 0 1 1 0 97 1 0 0 0 0 1 1

50 0 1 0 0 1 1 0 98 0 1 0 0 0 1 1

51 1 1 0 0 1 1 0 99 1 1 0 0 0 1 1

52 0010110

53 1010110

54 0110110

55 1110110

Switch Setting

MAC

Address

SW1 SW2 SW3 SW4 SW5 SW6 SW7

60 0011110

61 1011110

62 0111110

63 1111110

68 0010001

69 1010001

70 0110001

71 1110001

76 0011001

77 1011001

78 0111001

79 1111001

84 0010101

85 1010101

86 0110101

87 1110101

92 0011101

93 1011101

94 0111101

95 1111101

100 0010011

101 1010011

102 0110011

103 1110011

Switch Setting

2-4 Installing the Adapter

Table 2.A MAC Address Switch Settings (UP = 1 = OPEN) (Continued)

MAC

Address

SW1 SW2 SW3 SW4 SW5 SW6 SW7

104 0 0 0 1 0 1 1 116 0 0 1 0 1 1 1

105 1 0 0 1 0 1 1 117 1 0 1 0 1 1 1

106 0 1 0 1 0 1 1 118 0 1 1 0 1 1 1

107 1 1 0 1 0 1 1 119 1 1 1 0 1 1 1

108 0011011

109 1011011

110 0111011

111 1111011

112 0 0 0 0 1 1 1 124 0 0 1 1 1 1 1

113 1 0 0 0 1 1 1 125 1 0 1 1 1 1 1

114 0 1 0 0 1 1 1 126 0 1 1 1 1 1 1

115 1 1 0 0 1 1 1 127 1 1 1 1 1 1 1

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.

Switch Setting

MAC

Address

SW1 SW2 SW3 SW4 SW5 SW6 SW7

120 0001111

121 1001111

122 0101111

123 1101111

Switch Setting

Figure 2.2 Setting the TERM, -BIAS, and +BIAS Switches

-BIAS Switch (SW2) +BIAS Switch (SW3)

TERM Switch (SW1)

RSRV Switch (SW4) Reserved for future use

UP = OFF

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) —

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.

Installing the Adapter 2-5

Network with PowerFlex Drives at Starting and/or Ending Nodes

For a network with PowerFlex drives at the starting and/or ending nodes (Figure 2.3 switches to the “Down” (On) position. All other PowerFlex drive network nodes must have these switches set to the “Up” (Off) position.

Figure 2.3 Example Network with PowerFlex Drives at Starting and/or Ending Nodes

), set their 20-COMM-B adapter’s TERM, -BIAS, and +BIAS

Node 1

(Starting Node)

BACnet MS/TP Network

20-COMM-B Adapter Settings for

TERM, -BIAS, and +BIAS Switches

"Down" (On) Positions "Up" (Off) Positions

Network with PowerFlex Drives at Other Nodes

For a network with PowerFlex drives at other node locations — not starting and/or ending nodes (Figure 2.4 +BIAS switches to the “Up” (Off) position. In this network scenario, other brands of building automation products at the starting and/or ending nodes require appropriate termination and bias resistors. Refer to their instruction documentation for details.

Figure 2.4 Example Network with PowerFlex Drives at Other Nodes

Node 1

(Starting Node)

Node 2 Node 3 Node 4

■ ■ ■

), set the TERM, -BIAS, and

PowerFlex 7-Class Drives

Node 2 Node 3 Node 4

Node

(Ending Node)

"Down" (On) Positions

Node

(Ending Node)

Other Brand

Building Automation

Product

BACnet MS/TP Network

Requires

Termination and

Bias Resistors

20-COMM-B Settings for TERM, -BIAS, and

+BIAS Switches

Building Automation

■ ■ ■

"Up" (Off) Positions

Other Brand

Product

Requires

Termination and

Bias Resistors

2-6 Installing the Adapter

Connecting the Adapter to the Drive

1. Remove power from the drive.

2. Use static control precautions, and remove or open the drive cover.

3. Connect the Internal Interface cable to the DPI port on the drive and

then to the DPI connector on the adapter.

Figure 2.5 DPI Ports and Internal Interface Cables

20-COMM-B Adapter

➋

➊

➌

PowerFlex 70 Drive

➍

PowerFlex 700 Drive

Frames 0 - 1

Item Description Item Description

15.24 cm (6 in.) Internal Interface cable

➊ ➋

DPI Connector

➌ ➍

PowerFlex 700 Drive Frames 2 and Larger

RS-485 serial cable connection

2.54 cm (1 in.) Internal Interface cable

Installing the Adapter 2-7

4. Secure and ground the adapter to the drive by doing the following:

– On a PowerFlex 70 drive, fold the Internal Interface cable behind

the adapter and mount the adapter on the drive using the four captive screws.

– On a PowerFlex 700 or PowerFlex 700H drive, just mount the

adapter on the drive using the four captive screws.

Important: Tighten all screws since the adapter is grounded via the

screws. Recommended torque is 0.9 N-m (8.0 lb.-in.).

Figure 2.6 Mounting and Grounding the Adapter

Drive

Adapter

Internal Interface Cable folded behind the adapter and in front of the drive.

All Frame Sizes:

Adapter mounts in drive.

PowerFlex 700 Drive

Frames 0 and 1:

Adapter mounts on door.

PowerFlex 70 Drive

Frames 2 and Larger:

Adapter mounts in drive.

+ 53 hidden pages

Rockwell Automation 20-COMM-B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Summary of Changes

Table of Contents

Preface

About This Manual

Related Documentation

Rockwell Automation Support

Local Product Support

Technical Product Assistance

Conventions Used in This Manual

Chapter 1

Getting Started

Components

Features

Compatible Products

Required Equipment

Equipment Shipped with the Adapter

User-Supplied Equipment

Safety Precautions

Quick Start

Status Indicators

Chapter 2

Installing the Adapter

Preparing for an Installation

Commissioning the Adapter

Setting the MAC Address

Setting the TERM, -BIAS, and +BIAS Switches

Connecting the Adapter to the Drive