Allen Bradley 1788-EN2PAR Redundant EtherNet/IP to Profibus PA Gateway

Applications

The Allen Bradley 1788-EN2PAR Redundant EtherNet/IP to PROFIBUS PA Gateway is designed for industrial automation architectures that need to connect EtherNet/IP-based control systems with PROFIBUS PA field instrumentation. It supports communication between different industrial network environments, helping integrate process instruments into a broader control and monitoring system.

Typical application areas include:

• Process automation: Connecting compatible PROFIBUS PA field devices with EtherNet/IP-based automation systems.

• Distributed control systems: Supporting communication between process instrumentation and control-system infrastructure.

• Industrial network integration: Bridging compatible fieldbus and Ethernet-based control networks.

• Instrumentation modernization: Helping integrate existing PROFIBUS PA devices into an automation architecture that uses EtherNet/IP.

• Chemical and pharmaceutical facilities: Supporting network integration for process instrumentation when the selected configuration meets site requirements.

• Oil, gas, and energy installations: Providing a potential communication interface for compatible field instruments in appropriately engineered systems.

• Industrial maintenance and upgrades: Supporting replacement planning and network architecture reviews for existing automation installations.

Before deployment, confirm compatibility with the installed controller, network topology, PROFIBUS PA segment design, gateway configuration, and applicable hazardous-area requirements.

Advantages

1. Integration Between Industrial Networks

The 1788-EN2PAR is intended to bridge EtherNet/IP and PROFIBUS PA communication environments, helping automation engineers connect compatible control equipment and process instrumentation.

2. Support for Process Instrumentation

PROFIBUS PA is commonly used for process field devices such as transmitters and other instruments. A suitable gateway can help make compatible device information available to the control system.

3. Reduced Network Integration Complexity

Using an appropriate protocol gateway can simplify communication between network technologies that would otherwise require separate interfaces or a different integration approach.

4. Suitable for Industrial Automation Architectures

The gateway can be evaluated for applications involving PLC-based control, process instrumentation, and industrial network infrastructure, subject to confirmed configuration and compatibility.

5. Useful for System Upgrades

When modernizing an existing control system, engineers can assess whether a gateway-based architecture offers a practical way to retain compatible field devices while integrating them with an EtherNet/IP environment.

6. Compact Installation Footprint

The supplied dimensions of 152 × 80 × 136 mm help engineers estimate mounting space and plan cabinet layouts. Actual clearances, mounting requirements, and wiring access should be checked before installation.

7. Easier Spare-Parts Identification

Using the complete Allen Bradley model number, 1788-EN2PAR, helps maintenance teams and procurement specialists identify the intended product when requesting quotations or planning replacements.

Technical FAQs

Q1: What is the Allen Bradley 1788-EN2PAR used for?

It is identified as a redundant EtherNet/IP-to-PROFIBUS PA gateway. Its intended role is to support communication between compatible EtherNet/IP control infrastructure and PROFIBUS PA field-device networks. Confirm the supported functions and architecture in the product documentation.

Q2: What is the difference between EtherNet/IP and PROFIBUS PA?

EtherNet/IP uses standard Ethernet technology with the Common Industrial Protocol (CIP) for industrial communication. PROFIBUS PA is a fieldbus technology commonly used to connect process instruments. A compatible gateway helps bridge the two communication environments.

Q3: Does the 1788-EN2PAR support redundant communication?

The model is identified as a redundant gateway, but the exact redundancy architecture, supported operating modes, and required external components should be confirmed from the product's technical documentation. Do not assume that every network path or fieldbus segment is automatically redundant.

Q4: Which controllers can communicate with this gateway?

Controller compatibility depends on the supported EtherNet/IP implementation, firmware, configuration, and system architecture. Confirm compatibility with the specific Allen Bradley controller and engineering software used in the installation.

Q5: Can it connect directly to PROFIBUS PA instruments?

It is intended for PROFIBUS PA integration, but the fieldbus segment must follow the gateway's interface requirements. Verify segment power, wiring, termination, device addressing, and any required couplers or accessories before connecting instruments.

Q6: What configuration is required before commissioning?

The setup may involve configuring the EtherNet/IP connection, assigning network parameters, defining the PROFIBUS PA segment and devices, and mapping process data into the control system. Follow the configuration procedures for the exact hardware and software versions.

Q7: What should I check if the controller cannot communicate with the gateway?

Check power, status indicators, Ethernet cabling, IP settings, network switches, controller configuration, and communication diagnostics. Also confirm that the gateway's configuration matches the controller project and that no network addressing conflicts exist.

Q8: Why might PROFIBUS PA field devices fail to appear in the control system?

Possible causes include incorrect fieldbus wiring, segment power issues, addressing errors, configuration mismatches, unsupported device descriptions, or faults in the fieldbus segment. Review gateway diagnostics and verify each field device against the approved configuration.

Q9: What should be considered when installing the gateway in a control cabinet?

Confirm the mounting method, environmental limits, grounding and bonding requirements, wiring separation, ventilation, and access for maintenance. Follow the manufacturer's installation instructions and the site's electrical and hazardous-area standards where applicable.

Q10: What information is needed when ordering a replacement gateway?

Provide the complete model number, nameplate details, product condition requirements, required quantity, and any available hardware or firmware information. For an operating system, document the network topology and configuration before replacement so the new unit can be evaluated for compatibility.