Allen-Bradley 1785-ENET PLC-5 Ethernet Interface Communication Module
Allen-Bradley 1785-ENET PLC-5 Ethernet Interface Communication Module
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Brand:Allen Bradley PLC Item No.:Allen-Bradley 1785-ENET Product Origin:USA Product Dimensions:115 × 317 × 160 mm Product Weight:0.79 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen-Bradley 1785-ENET is a legacy PLC-5 Ethernet interface communication module designed to provide Ethernet connectivity for PLC-5 control systems in industrial automation environments. Developed by Rockwell Automation, this module enables reliable communication between PLC-5 processors, HMIs, SCADA systems, engineering workstations, and plant-wide industrial networks.
Widely deployed in legacy manufacturing facilities, the 1785-ENET became one of the most recognized Ethernet communication solutions for PLC-5 platforms, helping industrial plants transition from traditional DH+ networking to Ethernet-based automation architectures.
PLC-5/11, PLC-5/20, PLC-5/30, PLC-5/40, PLC-5/60 and others
Backplane Current
1.0 A @ 5V DC
Power Dissipation
5 W
Heat Dissipation
17.06 BTU/hr
Installation
1771 PLC-5 Chassis
Operating Function
Process Messaging / Ethernet Connectivity
Status Indicators
STAT, 10M, 100M LEDs
Physical Dimensions & Weight
Item
Value
Size (L × W × H)
115 × 317 × 160 mm
Weight
~0.79 kg
Recommended Related Models
1785-L40B – PLC-5 processor module
1785-L80B – high-capacity PLC-5 controller
1784-PCIC – PCI communication interface module
1784-PKTX – DH+/DH-485 communication card
1756-EN2T – modern ControlLogix EtherNet/IP module
Popular Allen-Bradley Models
1756-L81E ControlLogix Processor Module
1769-L33ER CompactLogix Controller
1756-EN2T EtherNet/IP Communication Module
1734-AENT POINT I/O Adapter
1794-ACN Flex I/O Communication Adapter
Applications
The 1785-ENET is commonly used in:
PLC-5 industrial Ethernet communication systems
SCADA and HMI integration networks
Factory automation data exchange
Legacy control system modernization projects
Industrial workstation-to-PLC communication
Manufacturing process monitoring systems
Its Ethernet capability made it an important migration bridge for facilities moving from DH+ infrastructure toward Ethernet-based industrial networking.
Advantages
Provides Ethernet connectivity for PLC-5 systems
Supports industrial EtherNet/IP and TCP/IP communication
Enables integration with SCADA and HMI platforms
Stable and reliable industrial communication performance
Simplifies migration from legacy DH+ architectures
Compatible with a wide range of PLC-5 processors
Rugged industrial construction for long-term operation
Proven reliability in legacy manufacturing environments
Technical FAQs
1. What is the main purpose of the 1785-ENET?
It provides Ethernet communication capability for PLC-5 systems.
2. Which protocol does it support?
EtherNet/IP and TCP/IP industrial Ethernet communication.
3. How many Ethernet ports does it have?
One RJ45 Ethernet communication port.
4. Is the 1785-ENET still in production?
No, it has been officially discontinued by Rockwell Automation.
5. Which PLC systems are compatible?
Multiple PLC-5 families including PLC-5/20, PLC-5/40, PLC-5/60, and others.
6. What Ethernet speed does it support?
10/100 Mbps communication speed.
7. Can it be used in modern ControlLogix systems?
No, it is specifically designed for PLC-5 architectures.
8. What replaced the 1785-ENET in newer systems?
Modern EtherNet/IP modules such as the 1756-EN2T.
9. Why is it still used today?
Many factories continue operating legacy PLC-5 automation systems.
10. What is its biggest advantage in legacy plants?
It enables Ethernet integration without requiring full PLC replacement.
