A-B 1756-EN2T Digital Controller

Product Detailed Description

• Function: The 1756-EN2T module enables the ControlLogix programmable automation controller (PAC) to communicate over an EtherNet/IP network. It acts as a bridge, allowing the ControlLogix system to:

• Exchange I/O data with remote EtherNet/IP devices (e.g., I/O modules, drives, sensors).

• Facilitate controller-to-controller communication within the ControlLogix system or with other EtherNet/IP-enabled controllers.

• Provide connectivity for HMI (Human Machine Interface) systems, SCADA (Supervisory Control and Data Acquisition) systems, and MES (Manufacturing Execution Systems) for data acquisition, monitoring, and control.

• Support CIP (Common Industrial Protocol) services over EtherNet/IP, including Explicit and Implicit Messaging.

• Key Features:

• EtherNet/IP Protocol: Supports EtherNet/IP, Rockwell Automation's open industrial network for real-time control and information exchange.

• High Performance: Designed for high-speed data exchange, making it suitable for demanding applications requiring fast I/O updates.

• Dual RJ45 Ports: Features two EtherNet/IP ports, supporting DLR (Device Level Ring) topology for network redundancy, which improves system availability by providing an alternative communication path in case of a cable break.

• ControlLogix Backplane Integration: Plugs directly into the ControlLogix chassis, leveraging the high-speed backplane for efficient data transfer to and from the ControlLogix processor.

• Web Server: Built-in web server for diagnostics, status monitoring, and basic configuration without requiring specialized software.

• CIP Sync (IEEE 1588): Supports CIP Sync for precise time synchronization across the network, crucial for applications requiring coordinated motion or high-speed data correlation.

• Support for Multiple Connections: Capable of handling numerous EtherNet/IP connections simultaneously.

• CIP Safety over EtherNet/IP: Can support CIP Safety with appropriate safety controllers and safety I/O, allowing standard and safety communication on the same network.

• Diagnostic Indicators: LEDs on the module provide visual indication of network status, module status, and I/O activity for easy troubleshooting.

Product Parameters

(Note: Specific parameters are derived from Rockwell Automation's official documentation for the 1756-EN2T.)

• Network Type: EtherNet/IP (IEEE 802.3 compliant)

• Data Rate: 10/100 Mbps (auto-negotiating), full-duplex

• Connections: 2 x RJ45 ports

• Network Topology Support: Star, Linear, Device Level Ring (DLR)

• CIP Services: Implicit Messaging (I/O connections), Explicit Messaging

• CIP Sync Support: Yes (IEEE 1588)

• CIP Safety Support: Yes (with appropriate safety controllers/I/O)

• Current Draw (5.1V DC): Max. 1200 mA

• Power Dissipation: Max. 6.15 W

• Thermal Dissipation: Max. 20.98 BTU/hr

• Isolation Voltage: 250V (continuous)

• Slot Width: 1 (occupies one slot in ControlLogix chassis)

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Storage Temperature: -40°C to 85°C (-40°F to 185°F)

• Relative Humidity: 5% to 95% non-condensing

• Vibration: 2 g @ 10...500 Hz

• Shock: 30 g (operating), 50 g (non-operating)

• Certifications: UL, c-UL, CE, C-Tick, KCC, GOST-R, Marine (ABS, DNV, GL, LR, BV, RINA)

• Firmware: Flash upgradable

Product Advantages

• High Performance and Scalability: Supports high-speed communication for large and complex automation systems, capable of handling significant data throughput.

• Network Redundancy (DLR): The dual-port DLR capability provides network fault tolerance, minimizing downtime in the event of a cable break and enhancing system reliability.

• Seamless Integration: Native integration with the ControlLogix platform and other EtherNet/IP devices simplifies system design, configuration, and maintenance.

• Real-time Control: EtherNet/IP and CIP Sync support enable deterministic control and precise synchronization for demanding applications like motion control.

• Information Integration: Facilitates easy data access for higher-level manufacturing execution systems (MES) and enterprise resource planning (ERP) systems, supporting the Connected Enterprise vision.

• Simplified Diagnostics: Built-in web server and diagnostic LEDs offer quick and easy troubleshooting, reducing commissioning and maintenance time.

• Standard-Based: Based on open industrial Ethernet standards (IEEE 802.3 and CIP), promoting interoperability with a wide range of devices.

• Future-Proof: Supports evolving industrial communication needs, including integration with IT networks and cloud services.

Precautions

• Proper Network Design: Adhere to EtherNet/IP network design best practices, including proper cabling (shielded if necessary), switch selection (managed industrial Ethernet switches), and IP address planning.

• Environmental Conditions: Ensure the module is installed within its specified operating temperature and humidity ranges. Protect it from excessive vibration and shock.

• Firmware Compatibility: Verify firmware compatibility between the 1756-EN2T module, ControlLogix processor, and other connected devices to avoid communication issues. Regularly check for firmware updates.

• Power Supply: Ensure the ControlLogix chassis and its power supply are adequately sized to provide stable and sufficient power to all modules, including the 1756-EN2T.

• Grounding: Proper grounding of the ControlLogix chassis and network cables is crucial for reliable operation and EMC compliance.

• Security: Implement network security measures (e.g., firewalls, access controls, network segmentation) to protect the EtherNet/IP network from unauthorized access and cyber threats.

• Configuration Software: Use the correct version of Rockwell Software Studio 5000 Logix Designer for configuration and programming.

• ESD Protection: Always observe electrostatic discharge (ESD) precautions when handling the module to prevent damage to sensitive electronic components.

Product Applications

The Rockwell Automation 1756-EN2T is widely used in various demanding industrial automation applications across different industries due to its high performance and robust communication capabilities.

• Process Control: Control and monitoring of continuous and batch processes in chemical, oil and gas, pharmaceutical, food and beverage, and water/wastewater treatment plants.

• Discrete Manufacturing: Control of assembly lines, packaging machinery, material handling systems (conveyors, robotics), and machine tools.

• Motion Control: Coordinated motion applications requiring precise synchronization between multiple axes, such as in printing, packaging, and converting industries.

• Building Automation: Integration of industrial control systems with building management systems for facility-wide control and energy management.

• Power Generation & Distribution: Control and monitoring of turbines, generators, switchgear, and protective relays.

• Automotive Industry: Control of body shops, paint shops, and final assembly lines.

• Mining & Metals: Control of heavy machinery, material handling, and processing plants.

• Any application requiring high-speed, reliable, and scalable industrial Ethernet communication for ControlLogix systems.

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