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Allen-Bradley 20-750-ENETR


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Warranty Information

All products (new, surplus, and refurbished) are covered by Chief Automation's 1 Year Warranty. The Manufacturer's Warranty does NOT apply.

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Product Specifications

brand name Allen-Bradley

Part Number 20-750-ENETR is a component used in various electronic devices, particularly in industrial automation and control systems. It is a network interface card designed to provide reliable and secure communication over Ethernet networks. Here's an overview of the key aspects of this part number:

Technical Specifications

The 20-750-ENETR network interface card is designed to operate in a variety of industrial environments. It supports Ethernet protocols such as TCP/IP, UDP, and HTTP, and is compatible with various industrial communication protocols like Modbus TCP and EtherNet/IP. The card features a 10/100Base-TX Ethernet interface and supports half-duplex and full-duplex operation. It also includes a variety of status indicators, such as link and activity LEDs, to help monitor the network connection.

Alarm/Error Codes

The 20-750-ENETR card is designed to provide robust communication and error handling. It includes a range of alarm and error codes that can be used to diagnose and troubleshoot issues with the network connection. These codes are typically displayed on the card's status indicators or can be accessed through a software interface. Some common error codes include:

  • Link down: Indicates a loss of network connection.
  • Link up: Indicates a successful network connection.
  • Activity: Indicates data transmission over the network.
  • Collision: Indicates a collision between data packets on the network.

User Manuals

The user manual for the 20-750-ENETR card provides detailed information on its installation, configuration, and operation. It includes instructions for mounting the card, connecting it to a network, and setting up communication protocols. The manual also covers troubleshooting procedures and error handling.


Troubleshooting the 20-750-ENETR card typically involves checking the network connection and the card's status indicators. If the link light is off, it may indicate a loss of network connection. If the activity light is flashing rapidly, it could indicate a high level of network traffic. If the card is not responding to commands, it may be due to a configuration issue or a hardware problem.


The 20-750-ENETR card is designed to be easily integrated into industrial control systems. It can be programmed using a variety of software tools and programming languages, such as C++ or Python. The card's firmware can be updated to support new protocols or features, and it can be configured to operate in different modes, such as master or slave.


The installation of the 20-750-ENETR card typically involves mounting it in a suitable enclosure, connecting it to a network, and configuring the communication protocols. The card should be installed in a location that is easily accessible for maintenance and troubleshooting. It is also important to ensure that the card is properly grounded to prevent electrical shock or damage.

In summary, the 20-750-ENETR network interface card is a reliable and secure component designed for use in industrial automation and control systems. Its technical specifications, alarm/error codes, user manuals, troubleshooting procedures, programming capabilities, and installation requirements make it a versatile and effective tool for industrial communication.

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