Overview
The Allen-Bradley 1756-ENBT is a ControlLogix EtherNet/IP bridge module designed to provide seamless Ethernet connectivity for distributed automation systems. This module is part of the Allen-Bradley ControlLogix family and is designed to provide seamless Ethernet connectivity for automation systems. The module can handle up to 64 TCP and 128 CIP connections, allowing efficient data exchange between controllers, I/O modules, and other devices on an EtherNet/IP network.
Key Features
- Supports 10/100 Mbps communication rates in half or full duplex mode through a single RJ45 port and includes a USB 1.1 port for configuration.
- Meets the common industry protocol (CIP) for safety in data transmission.
- Supports real-time I/O messaging, information exchange, and general messaging.
- Up to 5000 I/O packets/sec can be and 900 HMI/MSG packets/sec can be transacted with this device.
- Web-enabled, providing diagnostic tools and configuration access via a standard web browser, making it easier to manage networked devices.
- This module occupies a single slot in the chassis and may also be used in stand-alone applications.
Technical Specifications
- Communication Rate: 10/100 Mbps
- Network Type: Ethernet/IP
- Connections: 64 TCP and 128 CIP connections
- Current Draw: 700 mA at 5.1V DC, 3 mA at 24V DC
- Power Dissipation: 3.7 Watts
- Port Type: RJ-45, 8-pin Ethernet
- 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
- Dimensions: 140 x 40 x 118 mm (5.51 x 1.57 x 4.65 inches)
- Weight: 0.23 kg (0.51 lbs)
- Isolation Voltage: 30 Volts from the Ethernet network to the backplane
- Certifications: UL Listed, CSA Certified, CE Marked, ATEX Certified
- Series: ControlLogix Communication Modules
Typical Applications
- Used in ControlLogix systems to facilitate high-speed data exchange between controllers, I/O modules, HMIs, and SCADA systems over Ethernet.
- Inter-controller communication over Ethernet networks
- Connect control I/O and drives and communicate with other Ethernet/IP devices, acting as a bridge to send messages to devices on other networks and as an adapter for I/O on remote links.
- Distributed I/O control and remote I/O adapter applications
- Complex industrial automation networks requiring multiple device communication
Compatibility & Replacements
Compatible With
- Allen-Bradley ControlLogix chassis (1756-A10, 1756-A13, 1756-A16, 1756-A4)
- EtherNet/IP networks and devices supporting Common Industrial Protocol (CIP)
- Industrial controllers requiring Ethernet connectivity
- SCADA systems and HMI platforms
- Remote I/O modules and drives on EtherNet/IP networks
Replaces / Drop-In Replacement For
The 1756-ENBT lifecycle status is Discontinued. For newer installations, verify compatibility with your system integrator, as this module has been superseded by later-generation Ethernet communication modules. The 1756-ENBT /A revision shown is compatible with firmware versions 8.02.00 and later of RSLogix 5000 software.
Works With
- RSLogix 5000 software version 8.02.00 or later
- Studio 5000 (successor to RSLogix 5000)
- EtherNet/IP protocol stack
- PROFINET and industrial Ethernet devices (through gateway configuration)
- Web-based diagnostic tools via standard browser interface
- SNMP management and Duplicate IP Detection (Revision 3.3+)
