Communication Modules

ControlLogix Communication Modules Overview

Separate communication modules are available for different networks. Install multiple communication modules into the ControlLogix backplane to bridge or route control and information data between different networks. You can route a message through a maximum of four chassis (eight communication hops). You do not need a ControlLogix controller in the chassis.

ControlLogix-XT communication modules for extreme environments are available for EtherNet/IP, ControlNet, and Data Highway Plus and Remote I/O networks.

Networks

If your application requires	Use this network
• Plant management (material handling) • Configuration, data collection, and control on a single, high-speed network • Time-critical applications with no established schedule • Inclusion of commercial technologies (such as video over IP) • Internet/Intranet connection	EtherNet/IP network
• High-speed transfer of time-critical data between controllers and I/O devices • Deterministic and repeatable data delivery • Media redundancy • Intrinsic safety • Redundant controller systems	ControlNet network
• Connections of low-level devices directly to plant floor controllers, without interfacing them through I/O modules • Data sent as needed • More diagnostics for improved data collection and fault detection • Less wiring and reduced start-up time than a traditional, hard-wired system	DeviceNet network
• Plant-wide and cell-level data sharing with program maintenance • Data sent regularly • Transfer of information between controllers	Data Highway Plus network
• Connections between controllers and I/O adapters • Data sent regularly • Distributed control so that each controller has its own I/O and communicates with a supervisory controller	Remote I/O network
• Fieldbus transmitters and actuators • Closed-loop control • Process automation	Foundation Fieldbus network
• Modems • Supervisory control and data acquisition (SCADA)	Serial network
Connections to existing DH-485 networks	DH-485 network
SynchLink fiber-optic communication to: • controllers. • power distribution systems. • PowerFlex 700S drives.	SynchLink network

Environmentals and Certifications

ControlLogix Communication Modules Environmental Specifications

	ControlLogix Communication Modules	ControlLogix-XT Communication Modules	1757 Foundation Fieldbus Modules
Operating temperature	0…60 °C (32…140 °F)	-25…70 °C (-13…158 °F)	0…60 °C (32…140 °)
Storage temperature	-40…85 °C (-40…185 °F)	-40…85 °C (-40…185 °F)	-40…85 °C (-40…185 °F)
Relative humidity	5…95% noncondensing	5…95% noncondensing	5…95% noncondensing
Vibration	2 g at 10…500 Hz	2 g at 10…500 Hz	5 g at 10…500 Hz
Operating shock	30 g	30 g	15 g
Nonoperating shock	50 g	50 g	30 g

ControlLogix Communication Modules Certifications

Certifications: c-UL-us, CE, CSA, C-Tick, FM, ATEX, TÜV.
EtherNet/IP modules - ODVA-EtherNet/IP.
DeviceNet modules - ODVA.
ControlNet modules - CI.
Foundation Fieldbus modules - FF.

When product is marked. See the Product Certification link at www.ab.com for Declarations of Conformity, Certificates, and other certification details. For TÜV and SIL certification details, see the Safety Certifications and SIL link.

EtherNet/IP Network

The Ethernet Industrial (EtherNet/IP) network protocol is an open industrial-networking standard that supports both real-time I/O messaging and message exchange. The EtherNet/IP network uses off-the-shelf Ethernet communication chips and physical media.

EtherNet/IP Communication Modules

Specifications [PDF]

Cat. No.	Description	Communication Rate	TCP/IP Connections	Logix Connections
1756-EN2F	EtherNet/IP communication bridge module, fiber	100 Mbps	128	256
1756-EN2T	EtherNet/IP communication bridge module, copper	10/100 Mbps	128	256
1756-EN2TR	3-port EtherNet/IP communication bridge module, copper, with embedded switch technology	10/100 Mbps	128	256
1756-ENBT	EtherNet/IP communication bridge module, copper	10/100 Mbps	64	128
1756-EWEB	Ethernet web server module	10/100 Mbps	64	128
1756-EN2TXT	ControlLogix-XT, EtherNet/IP communication bridge module, copper	10/100 Mbps	64	256

Example Configurations—EtherNet/IP Network

Star Topology



Ring Topology



Linear Topology



Accessories—Ethernet Network

Cat. No.	Description	Specifications
1585J-M8PBJM-x	Ethernet RJ45 patchcord x = 2 (2 m), 5 (5 m) or 10 (10 m)	8-Conductor, Teal Riser PVC Cable (Flex Rated cable also available)
1585J-M8CC-H	RJ45 insulation displacement connector (IDC)	0.128...0.325 mm2 (26…22 AWG), Cat. 6, IDC, no tool required
1585J-M8CC-C	RJ45 crimp connector with boot, qty = 50 pieces	0.128...0.205 mm2 (26…24 AWG), Cat. 5e, requires crimp tool for assembly
1585A-Jcrimp	Crimp tool	—
9300-RADES	Remote access dial-in kit	56 Kbps modem connection to devices on an Ethernet network, includes: • pre-configured modem • communication module • DIN rail mounting hardware • associated cables

Switches

For real-time control and information flow throughout the manufacturing and IT enterprise, Rockwell Automation offers a full portfolio of industrial Ethernet switches and media, featuring a line of managed switches integrated with Cisco technology. The portfolio contains many popular features that are in use today by IT and Controls organizations that deploy standard, unmodified Ethernet, with settings optimized for use in EtherNet/IP applications.

Stratix switch products include Stratix 8000 Modular Managed Switches, Stratix 6000 Fixed Managed Switches, and Stratix 2000 Unmanaged Switches. Embedded Switch Technology is available in various Rockwell Automation products to enable ring and linear topologies.



ControlNet Network

The ControlNet network is an open, control network for real-time, high-throughput applications. The ControlNet network uses the Common Industrial Protocol (CIP) to combine the functionality of an I/O network and a peer-to-peer network providing high-speed performance for both functions. The ControlNet network gives you deterministic, repeatable transfers of all mission-critical control data in addition to supporting transfers of non-time-critical data. I/O updates and controller-to-controller interlocking always take precedence over program uploads and downloads and messaging.

ControlNet Communication Modules

Specifications [PDF]

Cat. No.	Description	Communication Rate	Logix Connections	Number of Nodes
1756-CN2	ControlNet communication bridge module, standard media	5 Mbps	100	99
1756-CN2R	ControlNet communication bridge module, redundant media	5 Mbps	100	99
1756-CNB	ControlNet communication bridge module, standard media	5 Mbps	40...48	99
1756-CNBR	ControlNet communication bridge module, redundant media	5 Mbps	40...48	99
1756-CN2RXT	ControlLogix-XT, ControlNet communication bridge module, redundant media	5 Mbps	100	99

Example Configuration—ControlNet Network



Example Configuration—Redundant ControlNet Media

Redundant ControlNet media requires these components:

• 1756-CN2R or 1756-CNBR ControlNet module
  
• Two identical ControlNet links
  

Accessories—ControlNet Network

Cat. No.	Description
Taps
1786-TPR	T-tap right angle
1786-TPS	T-tap straight
1786-TPYR	Y-tap right angle
1786-TPYS	Y-tap straight
Cables
1786-CP	Programming cable to ControlNet RJ45 port
1786-RG6	ControlNet network, shield high flex cable
1756-RG6F	ControlNet network, quad shield high flex coax cable
Other
1786-XT	ControlNet termination resistor
Repeaters
1786-RPA	ControlNet modular repeater adapter
1786-RPCD	ControlNet coaxial hub repeater
1786-RPFRL	ControlNet fiber ring repeater, long
1786-RPFRXL	ControlNet fiber ring repeater, extra long
1786-RPFS	ControlNet fiber ring repeater, short
1786-RPFM	ControlNet fiber ring repeater, medium

DeviceNet Network

The DeviceNet network is an open, low-level network that provides connections between simple industrial devices (such as sensors and actuators) and higher-level devices (such as controllers and computers). The DeviceNet network uses the proven Common Industrial Protocol (CIP) to provide the control, configure, and data collection capabilities for industrial devices.

DeviceNet Communication Module

Specifications [PDF]

Cat. No.	Description	Communication Rate	Number of Nodes
1756-DNB	DeviceNet communication bridge module	125 Kbps (500 m max) 250 Kbps (250 m max) 500 Kbps (100 m max)	64

Example Configuration—DeviceNet Network



Accessories—DeviceNet Network

For more information on selecting DeviceNet media, see the NetLinx Selection Guide, publication NETS-SG001.

Cat. No.	Description
KwikLink Lite flat media	KwikLink Lite flat media is a newer, ODVA-approved solution for wiring DeviceNet networks. Drop-lines for connecting nodes are added by using the KwikLink Lite two-piece connectors. This cable system supports the intermixing of DeviceNet cable types (thin-round with flat). All of the KwikLink Lite connectors provide insulation displacement technology with reduced assembly time.
KwikLink flat media	The KwikLink flat media system provides a modular cabling method with its flat 4-wire cable and Insulation Displacement Connectors (IDCs). The KwikLink system allows nodes to be added to the network without severing the trunkline. Cutting or stripping of the trunkline is eliminated, as is the need for predetermined cable lengths.
Round media	Round trunk cable is available in bulk spools or as pre-molded cordsets or patchcords in varying lengths. A wide variety of rugged, durable DeviceNet components is available for use in round trunk systems. Stainless steel versions of round cable system components are also available. • Thick trunk round media systems use thick cable for maximum DeviceNet trunk line length. • Round media thin trunk systems use thin cable to reduce maximum trunk line distances with a more compact and cost-effective installation for some applications. Thin cable outer jacket material is TPE for additional chemical resistance.

Data Highway Plus and Remote I/O Networks

The Data Highway Plus (DH+) network supports messaging between devices. The remote I/O link connects to remote I/O chassis and other intelligent devices.

The 1756-DHRIO module supports messaging between devices on DH+ networks. The Remote I/O functionality enables the module to act as a scanner for transferring digital and block-transfer data to and from remote I/O devices.

The 1756-RIO module can act as a scanner or adapter on a Remote I/O (RIO) network. In addition to digital and block-transfer data, the 1756-RIO module transfers analog and specialty data without message instructions.

Data Highway Plus and Remote I/O Communication Modules

Specifications [PDF]

Cat. No.	Description	Communication Rate	DH+ Connections	RIO Connections	Logix Connections
1756-DHRIO	Data Highway Plus/Remote I/O communication module	DH+: 57.6 Kbps RIO: 57.6 Kbps, 115.2 Kbps, 230.4 Kbps	32 DH+ messages per DH+ channel	32 logical rack connections per remote I/O 16 block-transfer connections per remote I/O channel	32
1756-RIO	Remote I/O communication module	RIO: 57.6 Kbps, 115.2 Kbps, 230.4 Kbps	—	32 physical racks (0...76), any combination of rack size and block transfers	10 scheduled I/O
1756-DHRIOXT	ControlLogix-XT, Data Highway Plus/Remote I/O communication module	DH+: 57.6 Kbps RIO: 57.6 Kbps, 115.2 Kbps, 230.4 Kbps	32 DH+ messages per DH+ channel	32 logical rack connections per remote I/O channel 16 block-transfer connections per remote I/O channel	32

Example Configuration—Data Highway Plus Network



Example Configuration—Remote I/O Network



Accessories—DH+ and Remote I/O Networks

Cat. No.	Description	Specifications
1770-CD	Cable to connect communication module to DH+ network	Belden 9463 twinaxial
9300-RADKIT	Remote access dial-in kit	56 Kbps modem connection to devices on a DH+ network, includes: • pre-configured modem • communication module • DIN rail mounting hardware • associated cables

Foundation Fieldbus Network

Foundation Fieldbus is a communication network created by the Fieldbus Foundation. It is a protocol designed for robust, distributed control of process control applications. Devices connected by a Foundation Fieldbus network can be used for sophisticated, highly distributed process control.

Foundation Fieldbus Linking Devices

Specifications [PDF]

Cat. No.	Description	Communication Rate	Number of H1 Ports	Number of Devices per H1 Link	Number of Devices per Linking Device
1757-FFLD2	Foundation Fieldbus linking device bridges from an Ethernet network	Foundation Fieldbus: 31.25 Kbps EtherNet/IP: 10/100 Mbps	2	16 (8…10 recommended)	32
1757-FFLD4			4		64
1757-FFLDC2	Foundation Fieldbus linking device bridges from a ControlNet network	Foundation Fieldbus: 31.25 Kbps ControlNet: 5 Mbps	2	16 (8…10 recommended)	32
1757-FFLDC4			4		64

Example Configuration—EtherNet/IP to Foundation Fieldbus Network



Example Configuration—ControlNet to Foundation Fieldbus Network



Accessories—Foundation Fieldbus Network

Cat. No.	Description
DIN rail	35 x 7.5 or 35 x 15 DIN (EN 50 022), zinc-plated yellow chromate steel

Serial Communication

The controller serial port is compatible with RS-232 serial communication. The serial port supports the DF1 protocol to communicate with other devices on the serial link.

Specifications [PDF]

Example Configuration—Serial Communication



Modbus Support

To use Logix5000 controllers on Modbus, you connect through the serial port and execute a specific ladder logic routine. The controller project is available with RSLogix 5000 Enterprise programming software. For more information, see Using Logix5000 Controllers as Masters or Slaves on Modbus Application Solution, publication CIG-AP129.

Accessories—Serial Communication

	1756-CP3	1747-CP3
Connector type	Female 9-pin D-shell
Connector angle	Right angle connector to controller, straight to serial port
Length	3 m (118 in.)

DH-485 Network

The controller serial port is compatible with DH-485 communication. The DH-485 connection does support remote programming and monitoring via RSLogix 5000 software.

DH-485 Communication Module

Specifications [PDF]

Cat. No.	Description	Communication Rate
1756-DH485	DH-485 communication bridge module	19.2 Kbps 9600 Kbps

Example Configuration—DH-485 Network



Accessories—DH-485 Network

Cat. No.	Description	Specifications
1747-CP3	9-pin D-shell, straight ; 9-pin D-shell, right angle	3 m (9.8 ft)
1761-CBL-AC00	9-pin D-shell, right angle; 9-pin D-shell, right angle	45 cm (17.7 in.)
1761-CBL-AP00	9-pin D-shell, right angle; 8-pin mini-DIN	45 cm (17.7 in.)
1761-CBL-PM02	9-pin D-shell, straight; 8-pin mini-DIN	2 m (6.5 ft)
1761-NET-AIC	Advanced Interface Converter (AIC+) connects each channel on the 1756-DH485 module to the DH-485 network	• 20.4…28.8V DC power source required • typical 120 mA 24V DC current draw
9300-RADKIT	Remote access dial-in kit	56 Kbps modem connection to devices on a DH+ network, includes: • pre-configured modem • communication module • DIN rail mounting hardware • associated cables

SynchLink Communication

The SynchLink module provides time synchronization and data broadcasting capabilities for distributed motion and coordinated drive control. The 1756-SYNCH SynchLink module connects a ControlLogix chassis to a SynchLink fiber-optic communication link. The module:

• coordinates Coordinated System Time across multiple ControlLogix chassis.
  
• moves a limited amount of data from one chassis to another at a high speed.
  
• lets one controller consume motion axes data from a controller in another chassis.
  

SynchLink Communication Module

Specifications [PDF]

Cat. No.	Description	Communication Rate
1756-SYNCH	SynchLink communication bridge module	5 Mbps

Example Configuration—1756-SYNCH Star Topology

Requires:
• 1751-SLBA base block
  
• 1751-SL4SP four-port splitter block
  
Supports:
• 2 layers of hubs
  
• 16 end nodes per hub
  
• 257 nodes (including master node) per star network
  

Example Configuration—1756-SYNCH Daisy-chain Topology

Optional:
• 1751-SLBP bypass switch block
  
Supports:
• 10 nodes (including master and end nodes) per daisy chain network
  

Example Configuration—1756-SYNCH Ring Topology

Optional:
• 1751-SLBP bypass switch block
  
Supports:
• 10 nodes (including master and end nodes) per ring network
  

Accessories—SynchLink Network

Cat. No.	Description
1403-CFxxx	Fiber optic cable assembly (Rockwell Automation)
HCP-M0200T V01RK	Lucent Technologies 200 mm simplex cable