The Allen-Bradley 1756-ENBT is a critical EtherNet/IP bridge module designed for the ControlLogix platform, enabling deterministic communication between controllers, I/O modules, and HMI systems. As a native EtherNet/IP device, the 1756-ENBT supports both implicit (real-time I/O) and explicit (messaging) connections, making it ideal for distributed control architectures. It operates at 10/100 Mbps with auto-negotiation and features dual RJ45 ports for flexible network topologies, including daisy-chain and star configurations. The module includes a built-in web server for remote diagnostics, CIP Sync for time synchronization, and support for up to 128 TCP/IP connections. With a robust metal enclosure and compliance with industrial standards (CE, UL, CSA), the 1756-ENBT ensures reliable performance in harsh factory floor environments.
| Parameter |
Specification |
| Product Type |
EtherNet/IP Bridge Module |
| Compatible Platform |
ControlLogix (1756 chassis) |
| Ethernet Speed |
10/100 Mbps, auto-negotiating |
| Duplex Modes |
Full-duplex and half-duplex |
| Number of RJ45 Ports |
2 (copper, 10/100Base-TX) |
| Network Topology |
Star, daisy-chain, ring (via DLR) |
| Maximum TCP/IP Connections |
128 |
| Maximum CIP Connections |
128 (implicit + explicit) |
| I/O Data Size |
Up to 500 bytes per connection |
| Supported Protocols |
EtherNet/IP, TCP/IP, UDP, ICMP, IGMP, SNMP, HTTP |
| Web Server |
Built-in for diagnostics and configuration |
| CIP Sync (IEEE 1588) |
Supported for time synchronization |
| Power Supply |
5V DC from backplane (via 1756 chassis) |
| Power Consumption |
3.5 W typical |
| Operating Temperature |
0 to 60°C (32 to 140°F) |
| Storage Temperature |
-40 to 85°C (-40 to 185°F) |
| Relative Humidity |
5 to 95% non-condensing |
| Vibration Resistance |
2 g Standard Models 10–500 Hz |
| Shock Resistance |
30 g, 11 ms half-sine |
| Enclosure Type |
Open-style, metal housing |
| Certifications |
CE, UL 508, CSA C22.2 No. 142, FCC Part 15 |
| Weight |
0.4 kg (0.88 lb) |
| Dimensions (H x W x D) |
144 x 35 x 118 mm (5.67 x 1.38 x 4.65 in) |
| LED Indicators |
Module status (OK), network activity (LINK/ACT), I/O status |
| Warranty |
1 year standard (extended options available) |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22