1756-EN2TR

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-EN2TR

Type

EtherNet/IP communication module

Application

Communication module

Used with

ControlLogix 1756 chassis

Application

EtherNet/IP

Communication

Ethernet/IP

Display

Digital

Enclosure

None (open-style)

Mounting

Chassis

Sub Brand

ControlLogix

Type

Communication Module

Interface

2 Copper RJ45 (10/100 Mbps)

Number Of Channels

2

ATEX temp code

T4

CIP unconnected messages

128 + 128 (backplane + Ethernet)

Communication rate

10/100 Mbps

Conducted RF immunity

10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz

Connections supported, max

TCP: 128, CIP: 256 (CIP connections can be used for all explicit or all implicit applications. for exAle, a 1756-ENBT module has a total of 128 CIP connections that can be used for any combination of connections.)

Current draw

1A @ 5.1V DC, 3mA @ 24V DC

EFT/B immunity

±3kV @ 5kHz on Ethernet ports

Emissions

CISPR 11: Class A

Enclosure type rating

None (open-style)

ESD immunity

6 kV contact discharges, 8 kV air discharges

Ethernet cable

802.3 compliant shielded or unshielded twisted pair

Ethernet ports

2 Ethernet RJ45 Category 5

Isolation voltage

30V (continuous), Basic Insulation Type, Ethernet to Backplane, USB to Backplane, and USB to Ethernet(Applies only to these modules/series: 1756-EN2T/D, 1756-EN2TR/C,1756-EN3TR/B), Type tested at 980V AC @ 60s

Module location

Chassis based, any slot

Operating temperature

0 °C <Ta <60 °C (32 °F <Ta <140 °F)

Power dissipation

5.1 W

Technical documents (1)

• Rockwell Automation technical data 1756-TD003

Key features

• Two RJ45 Category 5 Ethernet ports
• Supports EtherNet/IP and TCP/IP protocols
• Chassis based, fits any slot, one slot wide
• Redundancy listed as supported by Rockwell
• Operating temperature 0 to 60 °C

About the Allen-Bradley 1756-EN2TR

The Allen-Bradley 1756-EN2TR is a ControlLogix communication module, listed by Rockwell Automation as CLX ENet/IP 100M DLR. Rockwell describes it as an EtherNet/IP communication module, dual port, 10/100M twisted pair, 128 TCP connections. Rockwell's product data gives a maximum of 128 TCP and 256 CIP connections, a current draw of 1A at 5.1V DC and 3mA at 24V DC, and power dissipation of 5.1 W. Rockwell lists its lifecycle status as Active.

What is the 1756-EN2TR used for?

It connects a ControlLogix chassis to an EtherNet/IP network through its two RJ45 ports. Rockwell lists the application as EtherNet/IP, with support for both EtherNet/IP and TCP/IP protocols. The module is chassis based and can be fitted in any slot.

Lifecycle and successor

Active.

Before you order

What to photograph or confirm so the right unit is quoted.

Check that the catalog number 1756-EN2TR appears on the module label, together with the series letter and firmware revision. Send us a photo of the label and we will check the details against your requirement.