ControlLogix EtherNet IP Communication Module 1756-EN2TR 100M DLR

Overview

1756-EN2TR is a dual-port Ethernet communication module of the ControlLogix series. It supports the EtherNet/IP industrial protocol, is compatible with CIP (Common Industrial Protocol), has dual RJ45 ports (10/100 Mbps adaptive), built-in switch, supports line, star and ring topologies, supports up to 256 CIP connections and 128 TCP/IP connections, and supports 8-axis integrated motion control in EtherNet/IP run on the network.

Specification

FAQ:

1.What network topologies can the 1756-EN2TR’s dual RJ45 port built-in switch functionality support?

1. Linear topology (Daisy Chain/Linear): Module ports are cascaded to form a link network, suitable for long-distance, dispersed node wiring scenarios;
2. Star topology (Star): With the switch as the center, the module’s dual ports can be used as central nodes or branch nodes to connect multiple terminal devices to facilitate centralized management and fault isolation;
3. Ring topology (Ring): Combined with device-level ring network (DLR) technology, dual ports are connected end to end to form a ring network. The fault recovery time is <3ms. It is a high-availability topology choice for critical control systems;
4. Hybrid topology: The above topologies (such as star + ring, line + star) can be combined to adapt to the partitioned network planning of complex factories.

2.What are the maximum number of CIP connections and the maximum number of TCP/IP connections for 1756-EN2TR?

1. Maximum 256 CIP connections (including explicit/implicit connections)
2. Maximum 128 TCP/IP connections

3.What are the core differences between the 1756-EN2TR and the 1756-EN2T and 1756-ENBT modules?

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