1756-ENT2R

Overview of Allen-Bradley 1756-ENT2R

The Allen-Bradley 1756-ENT2R is a dual-port Ethernet/IP communication module designed for the ControlLogix platform. It supports 10/100 Mbps Ethernet communication with two RJ45 copper ports, enabling implementation of redundant or ring network topologies to increase network availability and reliability. The module features advanced networking capabilities suitable for real-time control, information exchange, and integrated motion applications.

Key Features

• Dual 10/100 Mbps Ethernet ports for redundant network or ring topology
• Supports up to 256 Logix and 128 TCP/IP communication connections
• Designed for high network availability and uptime in industrial environments
• Integrated USB 1.1 port for local configuration and diagnostics
• Supports Device Level Ring (DLR) network for fast ring recovery
• Compatible with ControlLogix, CompactLogix, and various Allen-Bradley controllers and third-party devices
• Operates in any slot of ControlLogix chassis
• Power consumption: approximately 1 A at 5.1 V DC, 3 mA at 24 V DC
• Power dissipation: 5.1 W, thermal dissipation 17.4 BTU/hr
• Operating temperature range: 0 to 60 °C (32 to 140 °F)
• Supports common Ethernet protocols including CIP, TCP/IP, and UDP

Technical Specifications

Applications

The 1756-ENT2R Ethernet/IP communication module is used to enhance ControlLogix system connectivity with high-speed and redundant Ethernet solutions. It is ideal for distributed control systems, motion control networks, and SCADA applications requiring robust, real-time Ethernet communications with minimal downtime.