Allen-Bradley 1756 ControlLogix User Manual
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Allen-Bradley 1756 ControlLogix User Manual

Allen-Bradley 1756 ControlLogix User Manual

Controlnet network configuration
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User Manual
ControlNet Network Configuration
1756 ControlLogix, 1756 GuardLogix, 1769 CompactLogix,
1769 Compact GuardLogix, 1789 SoftLogix, Studio 5000 Logix Emulate

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Summary of Contents for Allen-Bradley 1756 ControlLogix

  • Page 1 User Manual ControlNet Network Configuration 1756 ControlLogix, 1756 GuardLogix, 1769 CompactLogix, 1769 Compact GuardLogix, 1789 SoftLogix, Studio 5000 Logix Emulate...
  • Page 2 Personal Protective Equipment (PPE). Follow ALL Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE). Allen-Bradley, Rockwell Software, Rockwell Automation, and TechConnect are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.
  • Page 3 Summary of Changes This manual includes new and updated information. Use these reference tables to locate changed information. Grammatical and editorial style changes are not included in this summary. Global changes This table identifies changes that apply to all information about a subject in the manual and the reason for the change.

  • Page 5: Table Of Contents

    Table of contents Preface Studio 5000 environment ................7 Additional Resources ..................8 Legal notices ....................8 Chapter 1 ControlNet Overview Use ControlNet Communication Modules in a Control System ....11 Bridge Across Networks ................13 Exchange Information on a ControlNet Network ......... 16 Network Update Time (NUT) ..............
  • Page 6 Table of contents Chapter 4 Set Up the Hardware ..................60 Control I/O Requested Packet Interval (RPI) ..............60 Communication Format ................60 Direct or Rack-optimized Connections ..........62 Direct Connections for I/O Modules ..........63 Rack-optimized Connections for I/O Modules ........ 64 Ownership ....................

  • Page 7: Preface

    Preface This manual describes how you can use ControlNet communication modules with your Logix 5000™ controller. Use this manual if you program applications that use a ControlNet network with one of these Logix 5000 controllers: • CompactLogix controller • ControlLogix controller •...

  • Page 8: Additional Resources

    Preface These documents contain additional information concerning related products Additional from Rockwell Automation. Resources Resource Description ControlNet Modules Installation Describes how to install 1756-CN2, 1756- Instructions, publication CNET-IN005 CN2R, 1756-CN2RXT, 1756-CNB, 1756- CNBR, 1768-CNB, and 1768-CNBR ControlNet modules. Industrial Automation Wiring and Provides general guidelines for installing a Grounding Guidelines, publication Rockwell Automation industrial system.
  • Page 9 Apache License, OpenSans License Version 2.0 Trademark Notices Allen-Bradley, ControlBus, ControlFLASH, Compact GuardLogix, Compact I/O, ControlLogix, CompactLogix, DCM, DH+, Data Highway Plus, DriveLogix, DPI, DriveTools, Explorer, FactoryTalk, FactoryTalk Administration Console, FactoryTalk Alarms and Events, FactoryTalk Batch, FactoryTalk Directory, FactoryTalk Security, FactoryTalk Services Platform,...
  • Page 10 Preface factors. Rockwell Automation is not responsible for these intervening factors. The instructions in this document do not cover all the details or variations in the equipment, procedure, or process described, nor do they provide directions for meeting every possible contingency during installation, operation, or maintenance.

  • Page 11: Controlnet Overview

    Chapter 1 ControlNet Overview The ControlNet network provides high-speed transmission of time-critical I/O and interlocking data and messaging data. This data transfer capability enhances I/O performance and peer-to-peer communication in any system or application. The ControlNet network is highly deterministic and repeatable and remains unaffected as devices are connected or disconnected from it.
  • Page 12 Chapter 1 ControlNet Overview Figure 1 - ControlNet Modules and the Control System Overview Item Description Personal computer running SoftLogix5800 controller with 1784-PCICS card 1756-CNB module (as an adapter) with 1756 I/O modules PowerFlex 700S drive 1794-ACN15 adapter with 1794 I/O modules 1734-ACNR adapter with 1734 I/O modules PanelView terminal CompactLogix 1769-L35CR controller with local 1769 I/O modules...

  • Page 13: Bridge Across Networks

    ControlNet Overview Chapter 1 Some ControlNet modules support the ability to bridge or route Bridge Across communication to and from different networks, depending on the capabilities Networks of the platform and communication devices. Important: You can only bridge across networks to communicate with devices. You cannot bridge across networks to control I/O, even though Logix Designer software can accept such a configuration in the I/O Configuration folder.
  • Page 14 Chapter 1 ControlNet Overview Item Description Item Description PanelView terminal DeviceNet network Bridge ControlNet network Important: The performance of a CompactLogix controller on a ControlNet network degrades significantly if you use the controller as a bridge. Target bridging over a CompactLogix controller on a ControlNet network toward applications that are not real-time dependent, such as Logix Designer software program downloads.
  • Page 15 ControlNet Overview Chapter 1 SoftLogix virtual chassis, see the SoftLogix5800 System User Manual, publication 1789-UM002. Table 2 - Bridges from a ControlNet Network Destination Modules for a 1768 CompactLogix Modules for a 1769 Modules for a ControlLogix Network System CompactLogix System Chassis •...

  • Page 16: Exchange Information On A Controlnet Network

    Chapter 1 ControlNet Overview ControlNet communication modules use a message-based protocol that Exchange implements a relative path to send a message from the producing module in a Information on a system to the consuming modules. This protocol also lets you communicate ControlNet Network between devices on a ControlNet, DeviceNet, or EtherNet/IP network without writing additional application code.

  • Page 17: Network Update Time (Nut)

    ControlNet Overview Chapter 1 Media access to the network is controlled by a time-slice access algorithm, Concurrent Time Domain Multiple Access (CTDMA), which regulates a node’s opportunity to transmit in each network update interval (NUI). You configure how often the NUI repeats by selecting a network update time (NUT) in milliseconds.

  • Page 18: Requested Packet Interval (Rpi)

    Chapter 1 ControlNet Overview Item Description Scheduled traffic. Each device transmits only once Start The RPI is the update rate specified for a particular piece of data on the Requested Packet network. By using a rack-optimized connection, the RPI can specify the rate Interval (RPI) for an entire rack of I/O.

  • Page 19: Schedule The Network

    ControlNet Overview Chapter 1 Multiple Rate at Which Module Can Send Data 10 ms 20 ms 40 ms 80 ms 160 ms 320 ms 640 ms In this example, if you specify an RPI of 25 ms, then the network produces an API of 20 ms, which is the next fastest rate at which the module can send data.

  • Page 20: Understand The Network Keeper

    Chapter 1 ControlNet Overview In this case, the ControlLogix controller and the 1756-CN2 module in the local chassis together act as a scanner, while the 1756-CN2 module in the remote chassis with the I/O plays the role of an adapter. Every ControlNet network requires at least one module to store programmed Understand the parameters for the network and configures the network with those parameters...

  • Page 21: Default Parameters

    ControlNet Overview Chapter 1 1. From the Network menu, choose Keeper Status. 2. Review the keeper devices on the Keeper Status dialog box. On a typical network, the following must be true: • There must be only one active valid keeper. •...

  • Page 22: Controlnet Network Capacity And Topology

    Chapter 1 ControlNet Overview The UMAX is the highest network address of a node that can communicate on a ControlNet network. The UMAX must be set equal to or higher than the SMAX. • Assumed maximum cable lengths and maximum number of repeaters With this default ControlNet network, you can have unscheduled communication between the various devices on the network by using Logix Designer application and RSLinx software.
  • Page 23 ControlNet Overview Chapter 1 Figure 6 - Example ControlNet Network Star Topology Item Description Node Tap with 1 m (3.28 ft) dropline Coaxial repeater Rockwell Automation Publication CNET-UM001F-EN-P - February 2018...

  • Page 24: Number Of Nodes

    Chapter 1 ControlNet Overview Tip: Coax repeaters are typically used in trunkline and star topologies. See the ControlNet Coax Media Planning and Installation Guide, publication CNET-IN002, for more specific information on coax topologies you can create. With fiber media, you can configure your network in trunkline, star, and ring topologies. Only the 1786-RPFRL and 1786-RPFRXL repeaters support a ring topology.
  • Page 25 ControlNet Overview Chapter 1 Figure 8 - Maximum Length of a ControlNet Network Maximum Allowable Segment Length = 1000 m (3280 ft) - 16.3 m (53.4 ft) X [Number of Taps - 2] This graph assumes that a 1786-RG6 cable is being used. Rockwell Automation Publication CNET-UM001F-EN-P - February 2018...

  • Page 27: Connect A Computer To The Controlnet Network

    Chapter 2 Connect a Computer to the ControlNet Network This chapter explains how to set up a computer to operate on a ControlNet network. Topic Page Configure the ControlNet Communication Driver in RSLinx page 28 Classic Software page 28 You need to load a ControlNet communication driver for a computer to communicate with other devices on a ControlNet network.

  • Page 28: Configure The Controlnet Communication Driver In Rslinx Classic Software

    Chapter 2 Connect a Computer to the ControlNet Network To configure a ControlNet communication driver, perform this procedure in Configure the RSLinx Classic software. ControlNet Communication Driver in RSLinx Classic Software Important: If you are using a 1794-U2CN cable to connect to the network, you are not required to configure the driver. 1.
  • Page 29 Connect a Computer to the ControlNet Network Chapter 2 The Configure Device dialog box appears. The appearance of this screen varies, depending on the type of card used. 6. If your computer contains multiple cards, from the Serial Number (hex) field, choose the correct card. 7.

  • Page 31: Configure A Controlnet Module

    Chapter 3 Configure a ControlNet Module This chapter explains how to configure a ControlNet communication module to operate on a ControlNet network. Topic Page Use Logix Designer Software page 31 page 31 Use RSNetWorx for ControlNet Software page 46 page 46 Important: The example configuration process shown in this chapter uses a 1756-CN2R/B ControlLogix ControlNet bridge module in a ControlLogix controller project.
  • Page 32 Chapter 3 Configure a ControlNet Module Important: When you create a new Logix Designer project with the CompactLogix 1769-L32C or 1769-L35CR controller, the Controller Organizer creates a ControlNet port in the local chassis. In this case, you do not need to add a separate local communication module.
  • Page 33 Configure a ControlNet Module Chapter 3 Important: This procedure shows the New Module dialog box for a 1756- CN2R/B. However, various dialogs appear during configuration depending on the ControlNet module you select. For help configuring a module, refer to the online help in the Logix Designer application.
  • Page 34 Chapter 3 Configure a ControlNet Module 4. On the Module Properties dialog box, configure the connection properties and then click Apply. Connection Property Action If the module does not need to communicate with Inhibit Module the controller, check the checkbox. If the module needs to communicate with the controller, leave the checkbox cleared.

  • Page 35: Add And Configure A Remote Controlnet Module

    Configure a ControlNet Module Chapter 3 After you have added the local ControlNet communication module, you must Add and Configure a add remote ControlNet communication modules. A remote ControlNet Remote ControlNet module is a module that resides in a chassis separate from the controller. Module To add a remote ControlNet module, perform this procedure.

  • Page 36: Communication Format

    Chapter 3 Configure a ControlNet Module Important: This procedure shows the New Module dialog box for a 1756-CN2. However, various dialogs appear during configuration depending on the ControlNet module you select. For help configuring a module, refer to the online help in the Logix Designer application. 3.
  • Page 37 Configure a ControlNet Module Chapter 3 • What tags are generated when configuration is complete • The type of connection between the owner-controller and the I/O connected via the communication module The communication format setting also affects the RPI rate. Table 7 - Communication Formats Communication Format Function Effect on RPI...

  • Page 38: Download The Project To The Logix 5000 Controller

    Chapter 3 Configure a ControlNet Module Connection Property Action Use Scheduled Connection over ControlNet Check the box if you want to explicitly schedule the network connection. Note the following: • The checkbox is enabled when the connection for the module crosses ControlNet and the module supports unscheduled connections.
  • Page 39 Configure a ControlNet Module Chapter 3 1. Because you must schedule the ControlNet network before by using the new configuration, switch your Logix 5000 controller to Program mode using one of these methods: • Turn the controller keyswitch to PROG. •...

  • Page 40: Electronic Keying

    Chapter 3 Configure a ControlNet Module Electronic Keying reduces the possibility that you use the wrong device in a Electronic Keying control system. It compares the device defined in your project to the installed device. If keying fails, a fault occurs. The following attributes are compared: Attribute Description...

  • Page 41: Exact Match

    Configure a ControlNet Module Chapter 3 Important: Changing Electronic Keying parameters online interrupts connections to the device and any devices that are connected through the device. Connections from other controllers can also be broken. If an I/O connection to a device is interrupted, the result can be a loss of data. Exact Match Exact Match keying requires all keying attributes, that is, Vendor, Product Type, Product Code (catalog number), Major Revision, and Minor Revision,...

  • Page 42: Compatible Keying

    3.1. The physical module is a 1756-IB16D module with module revision 3.2. In this case, communication is prevented because the Minor Revision of the module does not match precisely. Module Configuration: Vendor = Allen-Bradley Product Type = Digital Input Module Catalog Number = 1756-IB16D Major Revision = 3 Minor Revision = 1 Communication is prevented.
  • Page 43 3.3. The physical module is a 1756-IB16D module with module revision 3.2. In this case, communication is prevented because the minor revision of the module is lower than expected and may not be compatible with 3.3. Module Configuration: Vendor = Allen-Bradley Product Type = Digital Input Module Catalog Number = 1756-IB16D...

  • Page 44: Disabled Keying

    In this case, communication is allowed because the major revision of the physical module is higher than expected and the module determines that it is compatible with the prior major revision. Module Configuration: Vendor = Allen-Bradley Product Type = Digital Input Module Catalog Number = 1756-IB16D...
  • Page 45 1756-IF16 analog input module. In this case, communication is prevented because the analog module rejects the data formats that the digital module configuration requests. Module Configuration: Vendor = Allen-Bradley Product Type = Digital Input Module Catalog Number = 1756-IA16...

  • Page 46: Use Rsnetworx For Controlnet Software

    The module configuration is for a 1756-IA16 digital input module. The physical module is a 1756-IB16 digital input module. In this case, communication is allowed because the two digital modules share common data formats. Module Configuration: Vendor = Allen-Bradley Product Type = Digital Input Module Catalog Number = 1756-IA16...

  • Page 47: Schedule The Network Offline

    Configure a ControlNet Module Chapter 3 • 1784-PCICS and 1784-PKTCS cards If you configure a keeper on one network and then use it on another network, the conflicting information can make it difficult to use RSNetWorx for ControlNet software to schedule the new network. In extreme cases, it may be difficult to go online: •...
  • Page 48 Chapter 3 Configure a ControlNet Module 1. In your Logix Designer software project, right-click your local ControlNet module and choose Properties. 2. From the Module Properties dialog box, click the RSNetWorx tab. 3. In the ControlNet file field, type a name for a new ControlNet file. 4.
  • Page 49 Configure a ControlNet Module Chapter 3 This action creates the file that RSNetWorx for ControlNet software uses offline to browse and schedule the network. 6. Select Schedule the ControlNet network. 7. Click the icon circled below to launch RSNetWorx for ControlNet software.
  • Page 50 Chapter 3 Configure a ControlNet Module 9. To change the network properties from default settings to those that best fit your network, from the Network menu, choose Properties. 10. On the Network Parameters tab, configure the network parameters, as described in the table below, and click OK. Parameter Description Network Update...
  • Page 51 Configure a ControlNet Module Chapter 3 11. Click the Media Configuration tab. Generally, you can use the default media configuration. 12. Adjust the configuration if your network is longer or uses repeaters. If the media configuration does not accurately represent the maximum propagation delay between any two nodes, your network may experience errors.

  • Page 52: Schedule The Network Online

    Chapter 3 Configure a ControlNet Module 14. On the Save Configuration dialog box, select Optimize and rewrite the schedule for all connections. 15. Click OK. 16. Return to your Logix Designer software project. a. Save your project to update the network file in your Logix Designer project.
  • Page 53 Configure a ControlNet Module Chapter 3 3. From the Network menu, choose Online. 4. From the Browse for Network dialog box, expand the tree to find and select a communication path to the ControlNet network and click This example uses a previously configured communication path to the controller.
  • Page 54 Chapter 3 Configure a ControlNet Module When you enable edits, RSNetWorx for ControlNet software reads data in the ControlNet modules and builds a schedule for the network. 7. To change the network properties from default settings to those that best fit your network, from the Network menu, choose Properties. 8.
  • Page 55 Configure a ControlNet Module Chapter 3 9. Click the Media Configuration tab, modify the settings if needed, and click OK. Generally, you can use the default media configuration. Adjust the configuration if your network is longer or uses repeaters. Important: If the media configuration does not accurately represent the maximum propagation delay between any two nodes, your network may experience errors.

  • Page 56: Reschedule A Controlnet Network That Has Previously Been Scheduled

    Chapter 3 Configure a ControlNet Module 11. From the Save Configuration dialog box, select Optimize and rewrite the schedule for all connections. 12. Click OK. Important: It is better to optimize connections. However, in some cases involving multiple controllers, the Merge changes into existing schedule option is available.
  • Page 57 Configure a ControlNet Module Chapter 3 3. From the Network menu, choose Online. 4. Check Edits Enabled. When you enable edits, RSNetWorx for ControlNet software reads data in the ControlNet modules and builds a schedule for the network. 5. Save the file. 6.

  • Page 59: Control I/O

    Chapter 4 Control I/O This chapter explains how a controller controls distributed I/O over a ControlNet network. Topic Page Set Up the Hardware page 95 page 95 Requested Packet Interval (RPI) page 60 page 60 Communication Format page 60 page 60 Add a Remote Adapter page 66 page 66...

  • Page 60: Requested Packet Interval (Rpi)

    Chapter 4 Control I/O In this example, the Logix 5000 controller uses a ControlNet communication Set Up the module in the local chassis to connect to the ControlNet network. The Hardware distributed (remote) I/O has a ControlNet adapter to connect it to the ControlNet network.
  • Page 61 Control I/O Chapter 4 Table 9 - Communication Formats Communication Format Criteria for Use with a Remote ControlNet Communication Module • When all of the remote I/O communicating with a controller via the remote ControlNet None communication module use a Direct Connection communication format •...

  • Page 62: Direct Or Rack-Optimized Connections

    Chapter 4 Control I/O Logix 5000 controllers use connections to transmit I/O data. These Direct or Rack- connections can be direct or rack-optimized connections. optimized Connections Term Definition Direct connection A direct connection is a real-time, data-transfer link between the controller and an analog or digital I/O module that enables your controller to collect more data from an I/O module.

  • Page 63: Direct Connections For I/O Modules

    Control I/O Chapter 4 Direct Connections for I/O In this example, assume that each distributed I/O module is configured for a direct connection to the controller. Modules The table below calculates the connections in this example. Table 11 - Connection Calculations System Connections Amount Controller to local ControlNet communication...

  • Page 64: Rack-Optimized Connections For I/O Modules

    Chapter 4 Control I/O Rack-optimized In this example, assume that each digital I/O module is configured for a rack- optimized connection to the controller. Analog modules must be configured Connections for I/O for direct connections. Modules This table calculates the connections in this example. Table 12 - Connection Calculations System Connections Amount...

  • Page 65: Ownership

    Control I/O Chapter 4 In a Logix 5000 system, modules multicast data. This means that multiple Ownership controllers can receive the same data at the same time from a single module. When you choose a communication format, you have to choose whether to establish an owner or listen-only relationship with the module.

  • Page 66: Add A Remote Adapter

    Add and Configure a Remote ControlNet Module on page 33 page Table 15 - Remote Adapter Options Type of Distributed I/O Required Remote Configuration Method Adapter 1756 ControlLogix I/O 1756-CN2, 1756-CN2R Logix Designer application 1756-CNB, 1756-CNBR 1768 CompactLogix I/O 1768-CNB, 1768-CNBR 1794 FLEX I/O...

  • Page 67: Add Distributed I/O

    Control I/O Chapter 4 To communicate with I/O modules in your system, you add a bridge, Add Distributed I/O adapter, and I/O modules to the I/O Configuration folder of the controller. Within the folder, you organize modules into a hierarchy of tree/branch and parent/child.

  • Page 68: Distributed I/O Communication Formats

    Chapter 4 Control I/O Important: This procedure shows the Module Properties dialog box for a 1794-IB16XOB16P/A digital combo module. However, various dialogs appear during configuration depending on the type of distributed I/O. For help configuring a module, refer to the online help in Logix Designer application.

  • Page 69: Access Distributed I/O

    Control I/O Chapter 4 I/O information is presented as a structure of multiple fields dependent on Access Distributed the specific features of the I/O module. The name of the structure is based on the location of the I/O module in the system. Each I/O tag is automatically created when you configure the I/O module in Logix Designer software.
  • Page 70 Chapter 4 Control I/O The Controller Tags dialog box appears. This example contains a tag named Remote_FLEX_CNET_adapter:1:C.Filter_0. Address Variable Definition Location Remote_FLEX_CNET_adapter SlotNumber Type Configuration MemberName Filter_0 This example shows an I/O tree configured with a remote FLEX I/O adapter and two remote FLEX I/O modules.

  • Page 71: Validate Connections

    Control I/O Chapter 4 Example: Table 16 - Example Tag Names Example Example Tag Module Example Tag Names Created by Logix Designer Software Example 1 Remote 1794-ACN15 FLEX_adapter:I adapter FLEX_adapter FLEX_adapter:I.SlotStatusBits FLEX_adapter:I.Data FLEX_adapter:O FLEX_adapter:O.Data Example 2 Remote 1794-IA16 FLEX_adapter:1:C Input_module in slot 1 FLEX_adapter:1:C.Config rack-optimized connection FLEX_adapter:1:C.DelayTime_0...
  • Page 72 Chapter 4 Control I/O 2. Identify any faults in communication modules by working down through the I/O configuration tree. In this example, faults occurred at the remote 1756-CN2/A module and the I/O modules added below it. 3. Identify the fault codes, specifically the fault at the module that is highest in the I/O tree.
  • Page 73 Control I/O Chapter 4 5. From the Module Properties dialog box, click the Connection tab. 6. Identify the fault in the Module Fault area. 7. To interpret the fault codes, return to the Logix Designer application and from the Help menu, choose Contents. 8.

  • Page 75: Produce And Consume Tags (Interlock Controllers)

    Chapter 5 Produce and Consume Tags (interlock controllers) This chapter explains how to interlock (produce and consume tags) controllers via a ControlNet network. Topic Page Terminology page 75 page 75 Set Up the Hardware page 95 page 95 Determine Connections for Produced and Consumed Tags page 77 page 77 Organize Tags for Produced or Consumed Data...

  • Page 76: Set Up The Hardware

    Figure 11 - Interlocking Controllers Example Item Description Chassis 1 can contain any of these combinations: • 1756 ControlLogix controller with a 1756-CN2 or 1756-CN2R communication module in the chassis. • 1756 ControlLogix controller with a 1756-CNB or 1756-CNBR communication module in the chassis.

  • Page 77: Determine Connections For Produced And Consumed Tags

    Chapter 5 Produce and Consume Tags (interlock controllers) Make sure of the following: • The ControlNet communication modules are connected to a scheduled ControlNet network. • All wiring and cabling are properly connected. • The communication driver is configured for the programming workstation.

  • Page 78: Organize Tags For Produced Or Consumed Data

    Chapter 5 Produce and Consume Tags (interlock controllers) Communication Card Available Connections Connections Used by Connections Used a Produced Tag by a Consumed ControlNet port on the Number of consumers CompactLogix controller 1768-CNB and 1768-CNBR CompactLogix ControlNet modules 1788-CNx card in PowerFlex 32 total ControlNet connections, 22 of which 700S with DriveLogix can be scheduled and used for producing and...

  • Page 79: Adjust For Bandwidth Limitations

    Produce and Consume Tags (interlock controllers) Chapter 5 Function Guidelines Use one of these data types: • DINT To share other data types, create a user-defined data type that contains the required data. Use the same data type for the produced tag and corresponding •...

  • Page 80: Produce A Tag

    Chapter 5 Produce and Consume Tags (interlock controllers) Depending on system size, your ControlNet network may lack the bandwidth for large tags. If a tag is too large for your ControlNet network, make one or more of these adjustments. Table 20 - Tag Adjustments Adjustment Description Increase the requested packet interval...
  • Page 81 Produce and Consume Tags (interlock controllers) Chapter 5 Important: You can create produced tags only when your Logix Designer project is offline. 2. In the Controller Organizer of the Logix Designer application, right- click Controller Tags and choose Edit Tags. 3.
  • Page 82 Chapter 5 Produce and Consume Tags (interlock controllers) 5. On the Tag Properties dialog box, from the Type menu, choose Produced. 6. In the Data Type field, type a data type that the controller can produce. A controller cannot produce a tag by using MSG or INT data types. 7.

  • Page 83: Consume A Tag

    Produce and Consume Tags (interlock controllers) Chapter 5 If you are unsure of the maximum number of consumers, use a number higher than the actual number of consumers. Unused connections are deducted from the number of available controller connections. 9. Click OK. Important: When your controller produces a tag, any device that interfaces with a ControlNet network can consume the tag.
  • Page 84 Chapter 5 Produce and Consume Tags (interlock controllers) 4. In the Controller Organizer of the Logix Designer application, right- click Controller Tags and choose Edit Tags. 5. From the Controller Tags dialog box, type the name of the new tag in an available Tag Name field.
  • Page 85 Produce and Consume Tags (interlock controllers) Chapter 5 • From the Type pull-down menu, choose Consumed. • In the Data Type field, type a data type that the controller can produce. A controller cannot produce a tag by using the MSG or INT data types.
  • Page 86 Chapter 5 Produce and Consume Tags (interlock controllers) 9. From the Consumed Tag Connection dialog box, complete these fields: • From the Producer pull-down menu, choose Producing_controller. This menu contains all possible paths to previously configured controllers in the I/O tree. •...

  • Page 87: Messaging

    Chapter 6 Messaging This chapter explains how to use MSG instructions to send data to and receive data from other modules on a ControlNet network. Topic Page Set Up the Hardware page 95 page 95 Guidelines for MSG Instructions page 88 page 88 Determine Connections for Messages page 89...

  • Page 88: Guidelines For Msg Instructions

    Programming terminal Local chassis with any of these combinations: • 1756 ControlLogix controller with a 1756-CN2 or 1756-CN2R communication module in the chassis • 1756 ControlLogix controller with a 1756-CNB or 1756-CNBR communication module in the chassis • 1768-L43 CompactLogix controller with a 1768-CNB or 1768-CNBR communication module in the chassis •...

  • Page 89: Determine Connections For Messages

    Messaging Chapter 6 Function Guidelines If your MSG is to a module that uses 16-bit If your message is to a module that uses 16-bit integers, such as an SLC 500 integers, use a buffer of INTs in the MSG controller, and it transfers integers, not REALs, use a buffer of INTs in the and DINTs throughout the project.

  • Page 90: Guidelines For Caching Message Connections

    Chapter 6 Messaging Follow these guidelines to determine whether to cache a connection. Guidelines for Caching Message Connections Message Execution Appropriate Action Repeated Cache the connection. This keeps the connection open and optimizes message completion time. Opening a connection during the execution of each message increases execution time.

  • Page 91: Enter A Message

    Messaging Chapter 6 Item Description Remote communication module for the remote controller Remote controller For more information on how to add ControlNet modules and remote devices to the local controller’s I/O configuration, see Chapter 4. Use relay ladder logic to enter a MSG instruction. Click to configure the Enter a Message MSG instruction, as shown in the example below.

  • Page 92: Configure A Message Instruction

    Chapter 6 Messaging To configure a MSG instruction, perform this procedure. Configure a Message Instruction 1. Click in the MSG box. The Module Configuration dialog box appears. 2. From the Message Type pull-down menu, choose a message type. 3. In the Source Element field, type the appropriate information. 4.

  • Page 93: Stagger The Messages

    Messaging Chapter 6 6. Click the Communication tab. 7. Specify the path of the module for which you sent the message instruction to the I/O configuration tree: • If the module has been added, click Browse to the choose the path. •...
  • Page 94 Chapter 6 Messaging Rockwell Automation Publication CNET-UM001F-EN-P - February 2018...

  • Page 95: Communicate With Panelview Terminals

    Chapter 7 Communicate with PanelView Terminals This chapter explains how a controller uses a ControlNet communication module to communicate with PanelView software products over a ControlNet network. Topic Page Set Up the Hardware page 95 page 95 Determine Connections to PanelView Terminals page 96 page 96 Add a PanelView Terminal...

  • Page 96: Determine Connections To Panelview Terminals

    Communicate with PanelView Terminals Item Description Local controller in any of these combinations: • 1756 ControlLogix controller with a 1756-CN2 or 1756-CN2R communication module in the chassis • 1756 ControlLogix controller with a 1756-CNB or 1756-CNBR communication module in the chassis •...

  • Page 97: Add A Panelview Terminal

    Communicate with PanelView Terminals Chapter 7 PanelView Plus terminals are requesting data from a single Logix 5000 controller, few unconnected buffers remain for anything else. For scheduled connected communication, you must add the PanelView or PanelView Plus terminal to the I/O configuration tree for the controller project.
  • Page 98 Chapter 7 Communicate with PanelView Terminals Logix 5000 Local ControlNet Communication Modules Controller 1769 CompactLogix 1769-L32C, 1769-L35CR (built-in ControlNet port) ControlLogix 1756-CN2, 1756-CN2R, 1756-CNB, 1756-CNBR SoftLogix 1784-PCIC (unscheduled data only) or 1784-PCICS (unscheduled data only) 4. From Module Properties dialog box, configure the local ControlNet module.
  • Page 99 Communicate with PanelView Terminals Chapter 7 6. From the Select Module dialog box, select the PanelView terminal and click OK. 7. From the Module Properties dialog box, configure the terminal. For information on configuring local ControlNet communication modules, refer to Configure a ControlNet Module on page 29 page Rockwell Automation Publication CNET-UM001F-EN-P - February 2018...

  • Page 100: Organize Controller Data For A Panelview Terminal

    Chapter 7 Communicate with PanelView Terminals Organize data for a PanelView or PanelView Plus terminal based on how the Organize Controller data is used. Data for a PanelView Terminal Data Type Required Actions Time-critical scheduled Use the I/O tags of the terminal. The terminal supports a maximum of 32 input tags and 32 output tags.
  • Page 101 Index creating in Logix Designer software 81 defined 73 determine connections 75 access guidelines 76 access data 66 organize tag data 76 produced and consumed data 16 control I/O 57 scheduled I/O tags 98 ControlNet module actual packet interval 18 bridge across networks 13 adjust configure 31...
  • Page 102 Index consumed tags 81 direct or rack-optimized connections 59 rack-optimized communication format 61 local ControlNet module 31 remote ControlNet module 34 produced tags 78 requested packet interval 58 remote ControlNet module 34 RPI. See requested packet interval 58 Logix Designer software RSLinx Classic software 28 add PanelView terminal 95 RSNetWorx for ControlNet software...
  • Page 103 Rockwell Automation support Rockwell Automation provides technical information on the web to assist you in using its products. At http://www.rockwellautomation.com/support you can find technical and application notes, sample code, and links to software service packs. You can also visit our Support Center at https://rockwellautomation.custhelp.com for software updates, support chats and forums, technical information, FAQs, and to sign up for product notification updates.

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