1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
    1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
    1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
    1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors
1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors

1785-ENET | Allen-Bradley EtherNet/IP Expansion Module for PLC-5 Processors

Part #: 1785-ENET Manufactured by: Allen-Bradley
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$975.00
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$975.00
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Condition: New-Surplus Original Box
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Product Overview
Allen Bradley PLC 5 Communication Module, EtherNet/IP Communication Port Protocol, Process Messages Operation, Direct Conn...  Read more
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Product Description P/N: 1785-ENET

Description / Specifications

Description 

The Allen-Bradley 1785-ENET is an Allen-Bradley PLC5 Ethernet Interface module. This module installs to a 1785 Backplane to provide a PLC5 controller Ethernet connectivity. It has One (1) RJ45 Ethernet communication interface supporting 10/100 Mbps transmission speed.

 

Technical Specifications 

 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1785-ENET
Backplane Current 1.0 A @ 5V dc
Power Dissipation 5 W
Heat Dissipation 17.06 BTU/hr
No. of Ports One (1) RJ45 Ethernet interface
Transmission speed 10/100 Mbps
Module Type Communication Module
Description PLC-5 EtherNet/IP Interface Module
Communication Port Protocol EtherNet/IP
Status Indicators STAT 10M 100M
Operation Process Messages
Communication w/ PLC Processor Direct Connection to Channel 3 of PLC-5 Processor
LEDs 1 Diagnosis/Status Per Channel
Max Modules Per System 4
Coating Conformal Coat
Required External Power None
Typical AC Signal Delay (Off) 29 (+/- 8) ms
Typical DC Signal Delay (Off) 30 (+/- 7) ms
Wiring Arm 1771-WN
Dimensions 4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm)
Series A, B and C

  

 

Information About 1785-ENET

The Allen-Bradley 1785-ENET is a PLC5 Ethernet Interface module. This module is used to provide Ethernet connectivity to a PLC5 controller for implementation of Distributed I/O system, communication to visualization systems such as Human Machine Interface (HMI). Supervisory Control and Data Acquisition (SCADA) and Distributed Control Systems (DCS). It may also be used to communicate with programming devices for downloading of user programs and establishing online connection to the controller.

This Ethernet interface module has One (1) RJ45 Port supporting Ethernet TCP I/P protocol. It supports data transmission speed of 10/100 Mbps with auto-negotiation capability. It has built-in status indicators such as STAT, 100M and 10M. The STAT indicator display the module’s Ethernet link activity. 100M depicts connection to a 100 Mbps network while 10M pertain to link activity in 10Mbps network.

the Ethernet communication interface directly attaches to the 1785 backplane via a 1771 PLC5 chassis. It is compatible for use with Enhanced PLC5 controllers, PLC5 controller with ControlNet communication port, and PLC5 controller with Ethernet communication port as well. Installing this Ethernet interface module together with a PLC5 Ethernet controller enables dual link capability.

The 1785-ENET is available in multiple series and revisions. Series A with Revision K module is compatible with PLC-5/11, PLC-5/20, PLC-5/26; Series A revision L is compatible with PLC-5/30. Series B revision L is compatible with PLC-5/40, PLC-5/40L, PLC-5/46, PLC-5/60, PLC-5/60L. Series C revision K is compatible with PLC-5/11, PLC-5/20, PLC-5/26, PLC-5/30, PLC-5/40, PLC-5/40L, PLC-5/46, PLC-5/60, PLC-5/60L, PLC-5/80, PLC-5/86 PLC-5/20E, PLC-5/40E, PLC-5/80E PLC-5/20C, PLC-5/40C, PLC-5/80C. Series D revision B is compatible with PLC-5/11, PLC-5/20, PLC-5/26, PLC-5/30, PLC-5/40, PLC-5/40L, PLC-5/46, PLC-5/60, PLC-5/60L, PLC-5/80, PLC-5/86 PLC-5/20E, PLC-5/40E, PLC-5/80E PLC-5/20C, PLC-5/40C, PLC-5/80C. Finally, Series E and later, regardless of the revision, is compatible with All Enhanced, Ethernet, and ControlNet PLC-5 controllers.

This module has a backplane rating of 1.0 A at 5 Volts DC and dissipates 5 Watts power. When used with an enhanced PLC-5 controller, the 1785-ENET enables EtherNet connectivity without disabling the DH+/RIO ports and conveniently provides Ethernet connectivity with a ControlNet PLC-5 controller. It can also run dual Ethernet links with the Ethernet PLC-5 controller. This unit weighs approximately 0.77 kg (1.7 pounds) and has dimensions of 273.05 x 31.75 x 146.05 millimeters (10.75 x 1.25 x 5.75 inches).

The module provides a 50 Volt circuit isolation using basic insulation type tested for 60 seconds at 500 Volts AC between communications to systems and uses the Ethernet 802.3 compliant (TCP/IP) shielded or unshielded twisted wire pair for connections. It supports Ethernet TCP/IP protocol via the 8-pin RJ45 port embedded in the module’s front panel. The module is tested to operate without derating at a temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) at 5% to 95% non-condensing relative humidity. It is also tested to withstand a 2.0 G operational vibration at 10 to 500 Hertz and to maintain the standard specified functionality at an operational shock of 30 G. 



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1785-ENET
Question: What is the 1785-ENET module?
Date Update:28/05/2025
Answer:

The 1785-ENET is an Ethernet communication interface module used with PLC-5 controllers. It allows the PLC-5 to communicate over an Ethernet/IP network, enabling data exchange with other devices such as HMIs, SCADA systems, remote I/O modules, and other Ethernet-enabled devices. The module supports high-speed communication, making it ideal for industrial automation systems.

Question: What is the maximum cable length for the 1785-ENET module?
Date Update:28/05/2025
Answer:

The 1785-ENET module supports Ethernet cabling standards. The maximum cable length for Cat 5 Ethernet cables (standard twisted pair cables) is 100 meters (328 feet) for reliable communication. For longer distances, additional networking equipment like Ethernet repeaters or switches may be required.

Question: How do I monitor network traffic for the 1785-ENET module?
Date Update:28/05/2025
Answer:

You can monitor network traffic using Ethernet diagnostic tools or network analyzers such as Wireshark. These tools allow you to capture Ethernet packets and analyze communication between devices on the network, including the 1785-ENET module. You can also use RSLogix 5 or Studio 5000 to check the communication status and error logs for the module.

Question: Can I use the 1785-ENET with a wireless network?
Date Update:28/05/2025
Answer:

The 1785-ENET module supports Ethernet/IP communication, but it is designed for wired Ethernet connections. To use it in a wireless network, you would need to use a wireless Ethernet bridge or access point to convert the wired Ethernet communication into wireless signals. However, keep in mind that using wireless networks may introduce latency and potential communication reliability issues in real-time control applications.

Question: Can the 1785-ENET module be used for remote I/O applications?
Date Update:28/05/2025
Answer:

Yes, the 1785-ENET module can be used to communicate with remote I/O devices over the Ethernet/IP network. It can enable data exchange between the PLC-5 controller and remote I/O systems, allowing for flexible and scalable automation systems that can be spread across large facilities or connected to various devices.

IQElectro is not an authorized distributor.
QElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1785-ENET is an Allen-Bradley PLC5 Ethernet Interface module. This module installs to a 1785 Backplane to provide a PLC5 controller Ethernet connectivity. It has One (1) RJ45 Ethernet communication interface supporting 10/100 Mbps transmission speed.

 

Technical Specifications 

 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1785-ENET
Backplane Current 1.0 A @ 5V dc
Power Dissipation 5 W
Heat Dissipation 17.06 BTU/hr
No. of Ports One (1) RJ45 Ethernet interface
Transmission speed 10/100 Mbps
Module Type Communication Module
Description PLC-5 EtherNet/IP Interface Module
Communication Port Protocol EtherNet/IP
Status Indicators STAT 10M 100M
Operation Process Messages
Communication w/ PLC Processor Direct Connection to Channel 3 of PLC-5 Processor
LEDs 1 Diagnosis/Status Per Channel
Max Modules Per System 4
Coating Conformal Coat
Required External Power None
Typical AC Signal Delay (Off) 29 (+/- 8) ms
Typical DC Signal Delay (Off) 30 (+/- 7) ms
Wiring Arm 1771-WN
Dimensions 4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm)
Series A, B and C

  

 

Information About 1785-ENET

The Allen-Bradley 1785-ENET is a PLC5 Ethernet Interface module. This module is used to provide Ethernet connectivity to a PLC5 controller for implementation of Distributed I/O system, communication to visualization systems such as Human Machine Interface (HMI). Supervisory Control and Data Acquisition (SCADA) and Distributed Control Systems (DCS). It may also be used to communicate with programming devices for downloading of user programs and establishing online connection to the controller.

This Ethernet interface module has One (1) RJ45 Port supporting Ethernet TCP I/P protocol. It supports data transmission speed of 10/100 Mbps with auto-negotiation capability. It has built-in status indicators such as STAT, 100M and 10M. The STAT indicator display the module’s Ethernet link activity. 100M depicts connection to a 100 Mbps network while 10M pertain to link activity in 10Mbps network.

the Ethernet communication interface directly attaches to the 1785 backplane via a 1771 PLC5 chassis. It is compatible for use with Enhanced PLC5 controllers, PLC5 controller with ControlNet communication port, and PLC5 controller with Ethernet communication port as well. Installing this Ethernet interface module together with a PLC5 Ethernet controller enables dual link capability.

The 1785-ENET is available in multiple series and revisions. Series A with Revision K module is compatible with PLC-5/11, PLC-5/20, PLC-5/26; Series A revision L is compatible with PLC-5/30. Series B revision L is compatible with PLC-5/40, PLC-5/40L, PLC-5/46, PLC-5/60, PLC-5/60L. Series C revision K is compatible with PLC-5/11, PLC-5/20, PLC-5/26, PLC-5/30, PLC-5/40, PLC-5/40L, PLC-5/46, PLC-5/60, PLC-5/60L, PLC-5/80, PLC-5/86 PLC-5/20E, PLC-5/40E, PLC-5/80E PLC-5/20C, PLC-5/40C, PLC-5/80C. Series D revision B is compatible with PLC-5/11, PLC-5/20, PLC-5/26, PLC-5/30, PLC-5/40, PLC-5/40L, PLC-5/46, PLC-5/60, PLC-5/60L, PLC-5/80, PLC-5/86 PLC-5/20E, PLC-5/40E, PLC-5/80E PLC-5/20C, PLC-5/40C, PLC-5/80C. Finally, Series E and later, regardless of the revision, is compatible with All Enhanced, Ethernet, and ControlNet PLC-5 controllers.

This module has a backplane rating of 1.0 A at 5 Volts DC and dissipates 5 Watts power. When used with an enhanced PLC-5 controller, the 1785-ENET enables EtherNet connectivity without disabling the DH+/RIO ports and conveniently provides Ethernet connectivity with a ControlNet PLC-5 controller. It can also run dual Ethernet links with the Ethernet PLC-5 controller. This unit weighs approximately 0.77 kg (1.7 pounds) and has dimensions of 273.05 x 31.75 x 146.05 millimeters (10.75 x 1.25 x 5.75 inches).

The module provides a 50 Volt circuit isolation using basic insulation type tested for 60 seconds at 500 Volts AC between communications to systems and uses the Ethernet 802.3 compliant (TCP/IP) shielded or unshielded twisted wire pair for connections. It supports Ethernet TCP/IP protocol via the 8-pin RJ45 port embedded in the module’s front panel. The module is tested to operate without derating at a temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) at 5% to 95% non-condensing relative humidity. It is also tested to withstand a 2.0 G operational vibration at 10 to 500 Hertz and to maintain the standard specified functionality at an operational shock of 30 G. 



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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