- Two 10/100 Mbps copper ports support DLR and linear EtherNet/IP layouts
- Provides controller messaging, distributed I/O, and integrated-motion connectivity
- Combines high connection capacity with temporary USB local programming
1756-EN3TR is built for ControlLogix networks that need two embedded switch ports rather than an external switch at the chassis. The topology can continue as a line or close as a DLR ring.
Capacity planning should consider connections, packet rate, and motion traffic together. Chassis series also changes the permitted upper operating temperature, so mechanical fit alone is not sufficient.
Before commissioning, verify the chassis series, power budget, DLR supervisor, IP plan, firmware, electronic keying, cabling, and saved Studio 5000 module definition.
Availability, condition, price, and shipping time for 1756-EN3TR are confirmed during quotation.
Allen-Bradley 1756-EN3TR ControlLogix EtherNet/IP Communication Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Use both RJ45 ports for the engineered DLR or linear topology
- Assign and document the intended DLR supervisor before commissioning
- Preserve IP addressing and module-definition data during replacement
- Plan within 128 TCP and 256 CIP connection limits
- Evaluate the 25,000-packet-per-second module capacity against the application
- Coordinate controller, update-rate, and network-load limits for integrated motion
- Install 1756-EN3TR in any compatible ControlLogix chassis slot with an adequate power budget
- Apply the documented 0 to 60°C operating-temperature range
- Use the USB connection only for temporary local programming and maintenance
- Device Level Ring EtherNet/IP control networks
- Linear EtherNet/IP communication between ControlLogix and distributed devices
- Integrated-motion architectures engineered for the documented axis capacity