Allen Bradley 1756-ENBT ControlLogix EtherNet/IP Module
The Allen Bradley 1756-ENBT is a single-slot ControlLogix communication bridge module that establishes high-speed EtherNet/IP connectivity for 1756 chassis-based control systems. Featuring one 10/100 Mbps copper RJ45 port, it supports real-time I/O message routing, explicit CIP messaging, distributed I/O control, and remote adapter functionality. The module manages up to 64 TCP/IP connections and 128 explicit CIP connections, allowing seamless data integration between ControlLogix controllers, operator interfaces, and enterprise networks.
Network Capacity and Socket Integration
The 1756-ENBT module operates at auto-negotiated 10/100 Mbps data rates over Category 5e/6 copper media. It supports up to 32 multicast tags to optimize network bandwidth when distributing produce/consume data across multiple controllers or nodes. Integrated socket services allow custom application protocols to communicate directly with TCP or UDP endpoints. Front-panel diagnostics include three bi-color LED indicators for module status, network status, and activity, alongside a 4-character alpha-numeric display for IP address and diagnostic message scrolling.
Electrical and Chassis Specifications
The module installs into any available slot in a standard 1756 ControlLogix chassis and draws operating power directly from the backplane. It draws 700 mA at 5.1V DC and 3 mA at 24V DC, with a maximum backplane power dissipation of 3.65 W. Continuous functional isolation is rated at 30V between the Ethernet network port and the system backplane.
The 1756-ENBT offers reliable 10/100 Mbps EtherNet/IP bridging, supporting 64 TCP connections and 32 multicast tags for ControlLogix chassis integration.
| Parameter | Specification |
|---|---|
| Model | 1756-ENBT |
| Brand | Allen Bradley |
| Series | ControlLogix |
| Product Type | Communication Modules |
| Slot Width | 1 slot |
| Communication Ports | 1 x 10/100 Mbps RJ45 copper |
| Network Media | Shielded/Unshielded Twisted-Pair (Category 5e/6) |
| Max TCP/IP Connections | 64 |
| Max CIP Connections | 128 |
| Multicast Tags | 32 max |
| Backplane Current Draw | 700 mA @ 5.1 VDC / 3 mA @ 24 VDC |
| Power Dissipation | 3.65 W max |
| Isolation Voltage | 30 V continuous (Ethernet port to backplane) |
| Operating Temperature | 0 to 60 deg C (32 to 140 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Relative Humidity | 5–95% non-condensing |
| Status Display | 4-character alpha-numeric display + 3 bi-color LEDs |
| Module Weight | 0.40 kg (0.88 lbs) |
Installation Guidelines
Mount the module into any slot of the ControlLogix chassis before powering up the backplane. Connect the RJ45 cable to an unmanaged or managed industrial Ethernet switch using standard copper media. Network parameters—such as IP address, Subnet Mask, and Gateway—must be assigned via BOOTP/DHCP utilities or RSLogix 5000 / Studio 5000 environment prior to online deployment.
Frequently Asked Questions
Q: How many TCP/IP connections and multicast tags can the 1756-ENBT handle simultaneously? A: The 1756-ENBT supports a maximum of 64 TCP/IP connections and up to 32 multicast tags for efficient network data distribution.
Q: What front-panel diagnostic indicators are available on the 1756-ENBT? A: The module features a 4-character scrolling alpha-numeric display alongside three bi-color LEDs (Module Status, Network Status, and Link/Activity) for rapid fault diagnosis.
Allen Bradley 1756-ENBT ControlLogix EtherNet/IP Module
Allen Bradley 1756-ENBT ControlLogix EtherNet/IP Module
The Allen Bradley 1756-ENBT is a single-slot ControlLogix communication bridge module that establishes high-speed EtherNet/IP connectivity for 1756 chassis-based control systems. Featuring one 10/100 Mbps copper RJ45 port, it supports real-time I/O message routing, explicit CIP messaging, distributed I/O control, and remote adapter functionality. The module manages up to 64 TCP/IP connections and 128 explicit CIP connections, allowing seamless data integration between ControlLogix controllers, operator interfaces, and enterprise networks.
Network Capacity and Socket Integration
The 1756-ENBT module operates at auto-negotiated 10/100 Mbps data rates over Category 5e/6 copper media. It supports up to 32 multicast tags to optimize network bandwidth when distributing produce/consume data across multiple controllers or nodes. Integrated socket services allow custom application protocols to communicate directly with TCP or UDP endpoints. Front-panel diagnostics include three bi-color LED indicators for module status, network status, and activity, alongside a 4-character alpha-numeric display for IP address and diagnostic message scrolling.
Electrical and Chassis Specifications
The module installs into any available slot in a standard 1756 ControlLogix chassis and draws operating power directly from the backplane. It draws 700 mA at 5.1V DC and 3 mA at 24V DC, with a maximum backplane power dissipation of 3.65 W. Continuous functional isolation is rated at 30V between the Ethernet network port and the system backplane.
The 1756-ENBT offers reliable 10/100 Mbps EtherNet/IP bridging, supporting 64 TCP connections and 32 multicast tags for ControlLogix chassis integration.
| Parameter | Specification |
|---|---|
| Model | 1756-ENBT |
| Brand | Allen Bradley |
| Series | ControlLogix |
| Product Type | Communication Modules |
| Slot Width | 1 slot |
| Communication Ports | 1 x 10/100 Mbps RJ45 copper |
| Network Media | Shielded/Unshielded Twisted-Pair (Category 5e/6) |
| Max TCP/IP Connections | 64 |
| Max CIP Connections | 128 |
| Multicast Tags | 32 max |
| Backplane Current Draw | 700 mA @ 5.1 VDC / 3 mA @ 24 VDC |
| Power Dissipation | 3.65 W max |
| Isolation Voltage | 30 V continuous (Ethernet port to backplane) |
| Operating Temperature | 0 to 60 deg C (32 to 140 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Relative Humidity | 5–95% non-condensing |
| Status Display | 4-character alpha-numeric display + 3 bi-color LEDs |
| Module Weight | 0.40 kg (0.88 lbs) |
Installation Guidelines
Mount the module into any slot of the ControlLogix chassis before powering up the backplane. Connect the RJ45 cable to an unmanaged or managed industrial Ethernet switch using standard copper media. Network parameters—such as IP address, Subnet Mask, and Gateway—must be assigned via BOOTP/DHCP utilities or RSLogix 5000 / Studio 5000 environment prior to online deployment.
Frequently Asked Questions
Q: How many TCP/IP connections and multicast tags can the 1756-ENBT handle simultaneously? A: The 1756-ENBT supports a maximum of 64 TCP/IP connections and up to 32 multicast tags for efficient network data distribution.
Q: What front-panel diagnostic indicators are available on the 1756-ENBT? A: The module features a 4-character scrolling alpha-numeric display alongside three bi-color LEDs (Module Status, Network Status, and Link/Activity) for rapid fault diagnosis.
