Rockwell Automation Allen-Bradley ControlLogix DeviceNet 1756-DNB User Manual
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Rockwell Automation Allen-Bradley ControlLogix DeviceNet 1756-DNB User Manual

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Summary of Contents for Rockwell Automation Allen-Bradley ControlLogix DeviceNet 1756-DNB

  • Page 1 ControlLogix DeviceNet Interface Module 1756-DNB User Manual...
  • Page 2 Identifies information that is critical for successful IMPORTANT application and understanding of the product. Allen-Bradley, ControlLogix, and Data Highway Plus are trademarks of Rockwell Automation. ControlNet is a trademark of ControlNet International, Ltd. DeviceNet is a trademark of Open DeviceNet Vendor Association, Inc.
  • Page 3 European Communities (EC) If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been designed and tested Directive Compliance to meet the following directives. EMC Directive This product is tested to meet the Council Directive 89/336/EC Electromagnetic Compatibility (EMC) by applying the following standards, in whole or in part, documented in a technical construction file:...
  • Page 5 Preface About This User Manual Introduction This user manual is designed to provide you enough information to get a small example application up and running. Use this manual if ™ ™ you are knowledgeable about DeviceNet and ControlLogix products, but may not have used the products in conjunction. The information provided is a base;...
  • Page 6 About This User Manual Contents This user manual contains the following chapters: Before You Begin Configuring the go to Chapter 1 DeviceNet Network go to Chapter 4 Planning Your Configuration Configuring DeviceNet go to Chapter 2 From Another Network go to Chapter 5 Setting Up the Creating and Running Hardware...
  • Page 7 About This User Manual The Example Application This manual describes how to set up an example application. The manual provides examples of each step of the setup, with references to other manuals for more details. System Components We used the following devices and software for the example application.
  • Page 8 About This User Manual Common Techniques The following conventions are used throughout this manual: Used in This Manual • Bulleted lists provide information, not procedural steps. • Numbered lists provide sequential steps. • Information in bold contained within text identifies menu windows, or screen options, screen names and areas of the screen, such as dialog boxes, status bars, radio buttons and parameters.
  • Page 9 About This User Manual Where to Find Refer to the following publications as needed for additional help More when setting up and using your DeviceNet network: More Information For information about See this publication Publication Number the ControlLogix DeviceNet interface module ControlLogix DeviceNet Scanner Module Installation Instructions 1756-5.66 the ControlLogix Chassis ControlLogix Chassis Installation Instructions...
  • Page 10 About This User Manual Terminology This term Means Bridge The interface module’s support of explicit message transfer. Change of State A type of I/O data communication. The interface module can send and receive data with slave devices that have the change of state feature. Data is sent whenever a data change occurs.
  • Page 11 • warranty support • support service agreements Technical Product Assistance If you need to contact Rockwell Automation for technical assistance, call your local Rockwell Automation representative, or call Rockwell directly at: 1 440 646-6800. For presales support, call 1 440 646-3NET.
  • Page 12 About This User Manual Publication 1756-6.5.19 - May 2000...

  • Page 13: Table Of Contents

    Table of Contents Chapter 1 Before You Begin What This Chapter Contains ..... . . 1-1 What You Need to Know ......1-1 What Your 1756-DNB Module Does.
  • Page 14 Table of Contents Chapter 4 (continued) Verifying the Photoeye Configuration ....4-12 Verifying the RediSTATION Configuration ... 4-14 AutoMapping the Devices into the Scanlist .

  • Page 15: What This Chapter Contains

    Chapter Before You Begin What This Chapter Contains This chapter provides an overview of communication between a Logix5550 controller and DeviceNet devices via a 1756-DNB module. The data tables and the RSNetWorx for DeviceNet screens and windows used to configure data tables are also described. The following table identifies what this chapter contains and where to find specific information.

  • Page 16: What Your 1756-Dnb Module Does

    Before You Begin What Your 1756-DNB In a typical configuration, the 1756-DNB module acts as an interface between DeviceNet devices and the Logix5550 controller. Module Does DeviceNet Network PC with RSNetWorx ControlLogix for DeviceNet software Chassis 1770-KFD Logix5550 1756-DNB Interface Controller Module Module...
  • Page 17 Before You Begin A controller to I/O DeviceNet configuration is shown in the following figure. See the referenced chapters for information on a particular topic. Controller to I/O PC running Input Read by Controller (Chapter 2) RSNetWorx for DeviceNet Configure DNB module (Chapter 4) Mapping Table (Chapters 2 and 4) Output Write by Output Data to Devices...

  • Page 18: Communicating With Your Devices

    Before You Begin Communicating with The 1756-DNB module communicates with a device via strobe, poll, change of state, and/or cyclic messages. It uses these messages to solicit Your Devices data from or deliver data to each device. Data received from the devices, or input data, is organized by the 1756-DNB module and made available to the controller.

  • Page 19: What 1756-Dnb Module Data Tables Are And What They Do

    Before You Begin What 1756-DNB Module To manage the flow of data between your controller and the network devices, the 1756-DNB module uses the following data tables. Data Tables Are and What They Do • 1756-DNB Module Configuration Table • Scanlist Table •...

  • Page 20: The Scanlist Table (Slt)

    Before You Begin The Scanlist Table (SLT) The SLT supports I/O updating for each of your devices on the network. It also makes it possible for your 1756-DNB module to make device data available to your controller. The SLT tells your 1756-DNB module: •...

  • Page 21: Rsnetworx For Devicenet Configuration Screen Map

    Before You Begin The configuration screen map below shows the RSNetWorx for DeviceNet screens used to configure the 1756-DNB module and the navigation paths between them. The use of these screens is described in Chapter 4. RSNetWorx for DeviceNet Configuration Screen Map The main RSNetWorx for DeviceNet screen.

  • Page 22: What's Next

    Before You Begin What’s Next? The remaining sections of this manual provide the following information: • Chapter 2 covers the configuration process planning stage through a data mapping example. • Chapter 3 describes the hardware setup for the example application. •...

  • Page 23: What You Need To Know

    Chapter Planning Your Configuration and Data Mapping Your Devices This chapter introduces questions you should ask before configuring your 1756-DNB interface module. In addition, it presents an example DeviceNet network and I/O data mapping scheme for a photoeye and a RediSTATION operator interface. The following table identifies what this chapter covers and where to find specific information.

  • Page 24: The Example Network

    Planning Your Configuration and Data Mapping Your Devices You should also ask “how might this network appear in the future?” At this point in your planning, it is advantageous for you to have some idea of how the network could be expanded. I/O data mapping can be performed automatically by the RSNetWorx software.
  • Page 25 Planning Your Configuration and Data Mapping Your Devices The system you will set up is shown below: PC running Windows NT 4.0 with RSNetWorx, RSLinx, and RSLogix 5000 Series 9000 software. Photoelectric Sensor 1770-KFD Node 62 Communication Node 9 Module ∗...

  • Page 26: Redistation Operator Interface Data Mapping

    Planning Your Configuration and Data Mapping Your Devices RediSTATION Operator Interface Data Mapping The RediSTATION has both inputs and outputs that must be mapped. The input byte is mapped to the 1756-DNB module’s input data file and then to the Logix5550 controller’s input image table. The output byte is mapped to the 1756-DNB module’s output data file and then to the Logix5550 controller’s output image table.

  • Page 27: Redistation Input Data Mapping Example

    Planning Your Configuration and Data Mapping Your Devices RediSTATION Input Data Mapping Example The following is an example of input data mapping for the RediSTATION. RediSTATION Input Byte What’s Happening? R = bit for red button (STOP) The bits for the RediSTATION 1 byte G = bit for green button (START) operator interface’s red and green...

  • Page 28: Redistation Output Data Mapping Example

    Planning Your Configuration and Data Mapping Your Devices RediSTATION Output Data Mapping Example The RediSTATION’s output is mapped to the 1756-DNB module’s output data file. Within the output byte is a bit for the indicator light. The output data file is then transferred from the Logix5550 controller application to turn the light on or off.

  • Page 29: Photoeye Input Data Mapping

    Planning Your Configuration and Data Mapping Your Devices Photoeye Input Data Mapping The photoelectric sensor (photoeye) inputs are mapped to the 1756-DNB module’s input data file and then to the Logix5550 controller’s input image table. The procedure for doing this using RSNetWorx for DeviceNet software is described on pages 4-15 to 4-17.

  • Page 30: Photoeye Input Data Mapping Example

    Planning Your Configuration and Data Mapping Your Devices Photoeye Input Data Mapping Example Photoeye Input Byte What’s Happening? The status and data bits from 1 byte each photoelectric sensor are mapped into the 1756-DNB module’s input data file. = unused bits The input data file is then transferred to the Logix5550 controller’s input image table.

  • Page 31: What This Chapter Contains

    Chapter Hardware Setup What This Chapter Contains This chapter describes how to set up the hardware for the example application. The following table describes what this chapter contains and where to find specific information. For information about See page Installing the 1770-KFD Communication Module Installing the Logix5550 Controller Installing the 1756-DNB Interface Module Installing a ControlNet, Ethernet, or DH+ Interface Module...

  • Page 32: Installing The Logix5550 Controller

    Hardware Setup Installing the Logix5550 Refer to the following illustration as you install the Logix5550 controller in the ControlLogix chassis. Controller Align the circuit board with top and bottom guides in the chassis. Important: For the example application, make sure you put the controller in slot 0 (the first slot from the left).

  • Page 33: Installing A Controlnet, Ethernet, Or Dh+ Interface Module

    Hardware Setup Refer to the following illustration as you connect the 1756-DNB module to the network. 10-position linear plug 1787-PLUGIOR DeviceNet port connector DeviceNet drop line or trunk line For additional information about how to connect the 1756-DNB More module to the network, see the ControlLogix DeviceNet Scanner Module Installation Instructions, publication 1756-5.66.
  • Page 34 Hardware Setup Refer to the following publications for more information on installing More these modules: Publication Publication Number ControlLogix ControlNet Bridge Installation Instructions 1756-5.32 ControlLogix DHRIO Module Installation Instructions 1756-5.4 ControlLogix Ethernet Module Installation Instructions 1756-5.3 When you have completed installation, your ControlLogix chassis should resemble the following illustration: Logix5550 Controller CNB, DHRIO, or ENET...

  • Page 35: Installing The Redistation Operator Interface

    Hardware Setup Installing the RediSTATION Begin installing the RediSTATION by removing the six screws fastening the cover and setting the DIP switches inside as follows: Operator Interface Set this position To this value: On (node Off address Off (data On rate The DeviceNet address is 000111 (node 7).

  • Page 36: Installing The Series 9000 Photoeye

    Hardware Setup Installing the Series 9000 Connect the photoeye to the network and configure the photoeye as follows: Photoeye • Node Address: 9 • Operating Mode: Light Operate (default) • Baud Rate: 500 kb Top View of Series 9000 Photoeye Programming Pushbutton Sensitivity...

  • Page 37: How Your Example System Will Look

    Hardware Setup How Your Example When you have finished installing all the devices, your example system should appear similar to the one shown below. System Will Look PC running Windows NT 4.0 with RSNetWorx RSLinx, and RSLogix 5000 Series 9000 software Photoelectric Sensor...
  • Page 38 Hardware Setup Publication 1756-6.5.19 - May 2000...

  • Page 39: What This Chapter Contains

    Chapter Configuring the DeviceNet Network What This Chapter Contains This chapter describes how to configure the DeviceNet network using RSLinx and RSNetWorx for DeviceNet software. The following table describes what this chapter contains and where to find specific information. For information about See page Installing the Software Using RSLinx to Configure the DeviceNet Driver...

  • Page 40: Using Rslinx To Configure The Devicenet Driver

    Configuring the DeviceNet Network Using RSLinx to Configure After you install the software, you use RSLinx to configure your DeviceNet driver and RSNetWorx for DeviceNet to configure the the DeviceNet Driver network. 1. Start RSLinx. The RSLinx main window will appear. 2.
  • Page 41 Configuring the DeviceNet Network The 1770-KFD Driver Configuration window will appear. Your driver setup will vary according to your particular system setup (COM port, Data Rate, Node Address). Choose the appropriate settings for your system. We set the Serial Port Setup Data Rate to 500K for the example application.

  • Page 42: Using Rsnetworx To Configure The 1756-Dnb Module Scanlist

    Configuring the DeviceNet Network Using RSNetWorx to Setting Up an Online Connection Configure the 1756-DNB Follow the procedure below to set up the DeviceNet network using Module Scanlist the 1770-KFD driver. 1. Start RSNetWorx. 2. From the File menu, select New. If you have RSNetWorx for ControlNet installed on your computer you may see the following window.
  • Page 43 Configuring the DeviceNet Network A list of the available drivers in RSLinx will appear. (Your list may appear different from that shown below, depending upon the drivers you have installed on your system.) 5. Select the 1770-KFD-1, DeviceNet driver and click on OK. You will be prompted to upload or download devices before going online.

  • Page 44: Setting The 1756-Dnb Node Address

    Configuring the DeviceNet Network RSNetWorx for DeviceNet performs a one-shot browse when you go online or choose the browse feature. The software will poll for devices once and display the results. If a node which was online later goes offline, there will be no “live” indication in RSNetWorx.
  • Page 45 Configuring the DeviceNet Network To change the node address of a device perform the following steps: 1. From the Tools menu select Node Commissioning. You will see the Node Commissioning window. Note: You can also use the Manual Configuration button on the front of the 1756-DNB module to change its node address and data rate.
  • Page 46 Configuring the DeviceNet Network The devices on the network will appear in the right panel. 4. Select the device from the right panel. 5. Click on OK. You will see the Node Commissioning window with the current settings for the device. Your window will look similar to the one shown below.

  • Page 47: Configuring The Scanlist

    Configuring the DeviceNet Network Configuring the Scanlist 1. Double-click on the 1756-DNB module icon. The following window will appear: 2. Select the Module tab. You will be prompted to upload or download the configuration. 3. Click on Upload. Publication 1756-6.5.19 - May 2000...
  • Page 48 4-10 Configuring the DeviceNet Network After uploading the following window will appear: 4. Make sure the 1756-DNB module’s Slot number is correct. We used Slot 1 for the example application. We used the Module Defaults for the other parameters. For an explanation of these parameters click on the Help button.
  • Page 49 Configuring the DeviceNet Network 4-11 You will see Scanlist window with the RediSTATION and photoeye in the list of Available Devices. 6. For this example, uncheck the Automap on Add box, as shown above. You will do the mapping later. 7.

  • Page 50: Verifying The Photoeye Configuration

    4-12 Configuring the DeviceNet Network 8. Click on OK. You will be prompted to download the changes to the device (i.e., the scanner). 9. Click on Yes. Verifying the Photoeye Configuration 1. Double-click on the 1756-DNB module icon and again select the Scanlist tab.
  • Page 51 Configuring the DeviceNet Network 4-13 The Edit I/O Parameters window will appear for the photoeye. The I/O parameters define the configuration for the device in terms of how much and what data the device will exchange with the 1756-DNB module. By default, the photoeye will send 1 byte when it receives the strobe request.

  • Page 52: Verifying The Redistation Configuration

    4-14 Configuring the DeviceNet Network Verifying the RediSTATION Configuration 1. Double-click on the RediSTATION in the Scanlist window. The Edit I/O Parameters window will appear for the RediSTATION. 2. Make sure that the Polled box is checked and that the Rx Size and Tx Size are each 1 byte.

  • Page 53: Automapping The Devices Into The Scanlist

    Configuring the DeviceNet Network 4-15 AutoMapping the Devices into the Scanlist Follow the procedure below to automatically map the photoeye and RediSTATION to the Logix5550 controller. If you want to know how to map the devices manually, click on the Help button at the bottom of the screen and select “Map device input data manually".
  • Page 54 4-16 Configuring the DeviceNet Network The resulting device mapping will appear in the lower panel: Slot 1 Double word 0 Photoeye RediSTATION inputs inputs I = Input In chapter 3 the 1756-DNB module was installed in slot 1 in the ControlLogix chassis.
  • Page 55 Configuring the DeviceNet Network 4-17 You will see the following window: 5. Highlight the RediSTATION and click on the AutoMap button. The output mapping of the RediSTATION will appear in the lower panel of the window. Slot 1 Double word 0 After mapping, the RediSTATION’s output address will appear...

  • Page 56: Saving The Devicenet Configuration

    4-18 Configuring the DeviceNet Network 7. Click on OK. You will be prompted to download the changes to the device (the scanner): 8. Click on Yes. Saving the DeviceNet Configuration 1. From the File menu, select Save As. 2. Save your DeviceNet configuration using an appropriate file name e.g., 1756-DNB).

  • Page 57: What This Chapter Contains

    Chapter Configuring DeviceNet From Another Network What This Chapter Contains This chapter describes how to configure a DeviceNet network remotely from another network. It provides examples of configuring the DeviceNet network from ControlNet, Ethernet, and Data Highway Plus networks. We assume that you have previously set up the network you will use to communicate with the DeviceNet network and that you have installed the appropriate interface hardware.

  • Page 58: Where To Find More Information

    Configuring DeviceNet From Another Network Where to Find Refer to the following publications as needed for information on More configuring other ControlLogix networks: More Information For information about: See this publication: Publication number: the ControlLogix ControlNet interface module ControlLogix ControlNet Scanner Installation Instructions 1756-5.32 ControlLogix ControlNet Interface Module User Manual 1756-6.5.3...
  • Page 59 Configuring DeviceNet From Another Network If you have RSNetWorx for ControlNet installed on your computer you may see the following window. Otherwise, proceed to step 4. 3. Highlight DeviceNet Configuration and click on OK. 4. Click on the Online button on the toolbar.
  • Page 60 Configuring DeviceNet From Another Network Your window should appear similar to the following one: 7. Select the OK button to accept the path. You will be prompted to upload or download devices before going online. 8. Click on OK to go online. RSNetWorx will begin browsing for network devices.

  • Page 61: Configuring Devicenet From An Ethernet Network

    Configuring DeviceNet From Another Network Configuring DeviceNet from Before performing this example the Ethernet network must be configured and running. A 1756-ENET module must be in the an Ethernet Network ControlLogix chassis with the 1756-DNB module. In this example the 1756-ENET module is in slot 4 of the ControlLogix chassis and is configured with an IP address of 130.130.130.1.
  • Page 62 Configuring DeviceNet From Another Network The Browse for network window will appear with the available drivers. (Your window may appear different from that shown below, depending upon the drivers you have configured on your system.) 5. Select the “+” next to your Ethernet driver (TCP-1 above) to expand it.
  • Page 63 Configuring DeviceNet From Another Network You will be prompted to upload or download devices before going online. 8. Click on OK to go online. RSNetWorx for DeviceNet will begin browsing for network devices. Note that this will take longer than in chapter 4 since you are doing a remote browse.

  • Page 64: Configuring Devicenet From A Data Highway Plus Network

    Configuring DeviceNet From Another Network Configuring DeviceNet Before performing this example the Data Highway Plus network must be configured and running. A 1756-DHRIO module must be in the From a Data Highway Plus ControlLogix chassis with the 1756-DNB module. In this example, the Network 1756-DHRIO module is in slot 2 of the ControlLogix chassis and channel A is configured for DH+ as node 3.
  • Page 65 Configuring DeviceNet From Another Network The Browse for network window will appear with the available drivers. (Your window may appear different from that shown below, depending upon the drivers you have configured on your system.) 5. Select the “+” next to the Data Highway Plus driver (AB_KT-1 above) to expand it.

  • Page 66: What's Next

    5-10 Configuring DeviceNet From Another Network You will be prompted to upload or download devices before going online. 8. Click on OK to go online. RSNetWorx for DeviceNet will begin browsing for network devices. Note that this will take longer than in chapter 4 since you are doing a remote browse.

  • Page 67: What This Chapter Contains

    Chapter The Example Application Program What This Chapter Contains This chapter describes the procedure to create, download, and run an example ladder logic program to test the DeviceNet network. When the program is running, pressing the START button on the RediSTATION will cause the red indicator light to come on and stay on until the STOP button is pressed.

  • Page 68: Installing The Software

    The Example Application Program Installing the Software To install the RSLogix 5000 software: 1. Insert the CD in the CD-ROM drive. Note: The CD-ROM supports Windows Autorun. Once inserted into the CD-ROM drive, if you have Autorun configured, the installation will automatically start at the first setup screen.

  • Page 69: Creating The Controller Tags

    The Example Application Program 2. Select File from the main menu bar, and then select New from the dropdown menu. The New Controller window will appear. Enter a controller Name of your choice Select from the pull-down list. For the example program, controller is in Slot Number 0 Optional Description...
  • Page 70 The Example Application Program The Controller Tags window will appear: 2. Select the Edit Tags tab at the bottom of the Controller Tags window. 3. Create the following tag: Tag Name Type counter_1 COUNTER Enter the name in the Tag Name field, then click on the button in the Type field.

  • Page 71: I/O Configuration

    The Example Application Program I/O Configuration Use the following procedure to configure the 1756-DNB module as an I/O device for the application: 1. Select the I/O Configuration folder in the project window. 2. Click the right mouse button. The following pop-up window will appear: 3.
  • Page 72 The Example Application Program 4. Select the 1756 DeviceNet Scanner from the list and click on OK. The Module Properties window will appear. For the example program the 1756-DNB is in Slot 1. Enter a Name of your choice. Description is optional Select Compatible Module 5.

  • Page 73: Creating The Ladder Logic

    The Example Application Program Creating the Ladder Logic Create the following ladder logic for the example application: 1. Double-click on the Main Routine folder in the project window to bring up the ladder logic diagram. 2. Put an output on the first rung. Assign it the tag “Local:1:O.CommandRegister.Run”.
  • Page 74 The Example Application Program 3. Add the rungs to communicate to the RediSTATION and cause the photoeye to increment a counter. Your completed program should look like this: 4. Save this program using an appropriate name (e.g., “DeviceNet_Controller.ACD.”) Publication 1756-6.5.19 - May 2000...

  • Page 75: Downloading And Running The Example Application Program

    The Example Application Program Downloading and Running You cannot go online to the controller directly over the DeviceNet network. The following sections provide examples of downloading the Example Application and running the program using the following networks: Program • ControlNet (page 6-9) •...
  • Page 76 6-10 The Example Application Program 4. Navigate down the tree through the backplane until you reach the Logix5550 Controller (1756-L1). Your window should appear similar to the following one: 5. Highlight the controller as shown above and click on the Download button.

  • Page 77: Downloading And Running The Program From An Ethernet Network

    The Example Application Program 6-11 Downloading and Running the Program from an Ethernet Network Follow the procedure below to download and run the example program from an Ethernet network. 1. Click on the RSLogix 5000 Communications menu and select Who Active. 2.
  • Page 78 6-12 The Example Application Program 5. Highlight the controller as shown above and click on the Download button. The status bar should increment, and the RS-232 LED indicator on the controller should blink green to indicate communication between the PC and the controller. 6.

  • Page 79: Downloading And Running The Program From A Dh+ Network

    The Example Application Program 6-13 Downloading and Running the Program from a DH+ Network Follow the procedure below to download and run the example program from a DH+ network. 1. Click on the RSLogix 5000 Communications menu and select Who Active. The Who Active window will appear (Your window may look different depending upon the drivers and other devices you have installed):...

  • Page 80: What's Next

    6-14 The Example Application Program 4. Highlight the controller as shown above and click on the Download button. The status bar should increment, and the RS-232 LED indicator on the controller should blink green to indicate communication between the PC and the controller. 5.

  • Page 81: What This Chapter Contains

    Chapter Troubleshooting What This Chapter Contains This chapter describes the diagnostics provided by the LED diagnostic indicators on the 1756-DNB module’s front panel. For information about See page: Power-Up Cycle Diagnostics Node Address/Status Indicator Interpreting the Three LED Status Indicators MOD/NET Status Indicator IO Status Indicator OK Status Indicator...

  • Page 82: Node Address/Status Indicator

    Troubleshooting Node Address/Status After power up the 1756-DNB interface module uses the alphanumeric display as a node address/status indicator that displays numeric codes Indicator providing diagnostic information about the module. The display flashes at approximately 1 second intervals. The following table summarizes the meanings of the numeric codes.
  • Page 83 Troubleshooting Node Address/Status Indicator Numeric Description Action Code Slave device is returning error Check accuracy of scan list table entry. responses when module attempts to Check slave device configuration. communicate with it (node number Slave device may be in another alternately flashes).

  • Page 84: Interpreting The Three Led Status Indicators

    Troubleshooting Interpreting the Three LED The three LED status indicators on the module provide information about the network and its connections. The tables on pages 7-4 Status Indicators through 7-6 outline the indicator condition and the corresponding status, and explain what each condition means. MOD/NET Status Indicator This bi-color (green/red) LED provides limited device and communication status.

  • Page 85: Io Status Indicator

    Troubleshooting Status Indicator This bi-color (green/red) LED indicates the status of the communication link. IO Status Indicator Condition Status Indicates not powered, Device is not online. not online The device has not completed the Dup_MAC_ID test yet. The device may not be powered; look at the Module Status LED.

  • Page 86: Ok Status Indicator

    Troubleshooting OK Status Indicator This bi-color (green/red) LED provides device status in the ControlLogix chassis. It indicates whether the device has power and is operating properly. OK Status Indicator Condition Status Indicates no power No power applied to device. Apply chassis power.

  • Page 87: Module Status Structure

    Appendix 1756-DNB Status Structure Module Status Structure The controller receives status information concerning the 1756-DNB module’s ability to exchange DeviceNet messages with other nodes by reading from a Status Structure in the 1756-DNB module. The module periodically updates the contents of the Status Structure and copies its contents to the controller.
  • Page 88 1756-DNB Status Structure The Status Structure consists of these data regions: Status Structure Element Description Data Type DINTs Scan_Counter counter incremented each I/O scan 32-bit Device_Failure_Register device failed bit table; 1 = failed 64-bit Autoverify_Failure_Register device I/O size does not match scanner’s 64-bit internal table;...
  • Page 89 1756-DNB Status Structure For ControlLogix, the available sizes are: • 10 DINTs (32-bit value) • 11 DINTs • 16 DINTs • 24 DINTs • 32 DINTs (Default) For example, if the user selects a status size of 10 DINTs in RSLogix 5000, the Status Structure would consist of fields Scan-Counter through Reserved_Array.
  • Page 90 1756-DNB Status Structure Publication 1756-6.5.19 - May 2000...
  • Page 91 4-12 to 4-18 photoeye RediSTATION 4-18 saving the DeviceNet configuration help 4-4 to 4-18 scanlist configuration Rockwell Automation support 4-4 to 4-6 setting up an online connection how your network will look software installation 4-2 to 4-3 using RSLinx 4-4 to 4-18...
  • Page 92 Index output data support and technical assistance DIP switch setting system components 4-14 to 4-18 scanlist configuration Rockwell Automation support RSLinx terminology 4-2 to 4-3 configuring DeviceNet 7-1 to 7-6 troubleshooting installation IO status indicator RSLogix5000 software installation MOD/NET status indicator...
  • Page 93 Allen-Bradley Publication Problem Report If you find a problem with our documentation, please complete and return this form. Pub. Name ControlLogix DeviceNet Interface Module User Manual Cat. No. 1756-DNB Pub. No. 1756-6.5.19 Pub. Date May 2000 Part No. 955134-55 Check Problem(s) Type: Describe Problem(s) Internal Use Only Technical Accuracy...
  • Page 94 Other Comments PLEASE FOLD HERE NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST-CLASS MAIL PERMIT NO. 18235 CLEVELAND OH POSTAGE WILL BE PAID BY THE ADDRESSEE 1 ALLEN BRADLEY DR MAYFIELD HEIGHTS OH 44124-9705...
  • Page 96 Publication 1756-6.5.19 - May 2000 PN 955134-55 Supersedes Publication 1756-6.5.15 - July 1998 © 2000 Rockwell International Corporation. Printed in the U.S.A.

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