1756-EWEB

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-EWEB

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

Special Features

Web Server

Sub Brand

ControlLogix

Type

Communication Module

Interface

1 Copper RJ45 (10/100 Mbps)

Number Of Channels

1

ATEX temp code

T4

Communication rate

10/100 Mbps

Conducted RF immunity

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

Current draw

700mA @ 5.1V DC, 3mA @ 24V DC

EFT/B immunity

±2kV @ 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

1 Ethernet RJ45 Category 5

Isolation voltage

30V (continuous), basic insulation type, Ethernet, network to backplane, Type tested @ 707V DC @ 60s

Module location

Chassis based, any slot

Operating temperature

0 °C <Ta <60 °C (32 °F <Ta <140 °F)

Power dissipation

3.7 W

Radiated RF immunity

10V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 1V/m with 1 kHz sine wave 80% AM from 2000...2700 MHz

Technical documents (1)

• Rockwell Automation technical data 1756-TD003

Key features

• Enhanced web server module for ControlLogix chassis
• Supports 64 TCP/IP connections
• One Category 5 RJ45 Ethernet port
• Chassis based, any slot, one slot wide
• Operating range 0 to 60 °C

About the Allen-Bradley 1756-EWEB

The Allen-Bradley 1756-EWEB is listed by Rockwell Automation as the ControlLogix ENET/IP Web Server Module, a communication module with a web server as its special feature. Rockwell describes it as an Ethernet/IP Enhanced Web Server Module supporting 64 TCP/IP connections. Rockwell's product data gives one copper RJ45 interface at 10/100 Mbps, chassis mounting in any slot, a slot width of 1, and a current draw of 700mA at 5.1V DC and 3mA at 24V DC. Rockwell lists the lifecycle status as Discontinued.

What is the 1756-EWEB used for?

It is a chassis-based communication module for a ControlLogix system, connecting over EtherNet/IP and TCP/IP through one Ethernet port. Rockwell lists the application as EtherNet/IP and the special feature as Web Server. When planning installation, note that Rockwell gives the enclosure as none (open-style) and the maximum surrounding air temperature as 60 °C.

Lifecycle and successor

Discontinued.

Before you order

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

Check that the catalog number on the module label reads 1756-EWEB, and note the series letter and firmware revision printed there. If you are unsure, send us a photo of the label and we will help confirm the part.