1756-CN2R Bridging module Support full speed 12 Mbps transmission rate

Manufacturer: Rockwell Automation
Brand: Alan Bradley
Manufacturer: Rockwell Automation
Manufacturer: Rockwell Automation
Part Number/Catalog Number 1756-CN2R type
The Allen-Bradley 1756-CN2R is a ControlLogix communication module that is part of the Logix controller platform. This module is primarily used to establish connections in a redundant ControlNet network topology, as it has two (2) BNC ControlNet ports. The module occupies a housing that can be fitted into any available slot in a standard chassis, such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17, and used with a standard ControlLogix power supply. In particular, 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B and redundant power supplies such as 1756-PA75R, 1756-PB75R, 1756-PSCA2. The ControlNet network is a multi-node communication network that utilizes a coaxial cable trunk, with nodes connected in the trunk using lead-in cables. This particular module is connected to the network using 1786-RG6 four-shielded RG6 coaxial cable. The 1756-CN2R supports transfer speeds of up to 5 Mbps. In addition to the dual ControlNet ports, the 1756-CN2R is equipped with one (1) USB port that supports a full speed 12 Mbps transfer rate. It cannot be used for data communication purposes. The module is suitable for implementing distributed I/O topologies because it can cover up to 1000 meters per network segment and can be easily extended by using Repeaters as signal enhancers for ControlNet segments longer than 1000 meters. It can also communicate with human machine interface (HMI) devices and supervisory control and data acquisition (SCADA) systems. It supports up to 128 Logix connections and up to 131 communication connections.

Allen-Bradley's 1756-CN2R ControlNet Connections per Communication Module is a communication module that connects to a slot in the ControlLogix chassis. The ControlNet network is provided through the Universal Industrial Protocol (CIP) and enhanced functionality is provided through the peer-to-peer network. It has a redundant configuration type and communicates at a rate of 5Mbps on up to 99 nodes. The 1756-CN2R has up to 128 Logix communication connections. It has 1300mA of consumption current at 5.1V DC, 3mA of consumption current at 24V DC, and 6.6W of heat dissipation at 22.5 BTU/hr. It has a 30V DC isolation voltage and performs a basic insulation test at 500V between ControlNet and the system for one minute. The 1756-CN2R features dual ControlNet BNC, a ControlNet RJ45, and a USB 1.1 port for connecting and communicating with other devices. It has an open housing type, designated as the T4 IEC temperature specification and the T4A North American Temperature Specification. The 1756-CN2R has an operating temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit), a relative humidity of 5-95%, an operating shock rate of 30G at 10-500Hz, and a maximum vibration of 2G.