Allen-Bradley 1756-CN2RB ControlNet communication module

Specific parameters
hardware interface
Control network port: It has two BNC control network ports for establishing connections in redundant control network topologies, and is also equipped with a control network RJ45 interface.
USB port: A USB 1.1 port that supports a full speed transfer rate of 12Mbps, used for temporary local programming, etc.
Electrical parameters
Input current: 1300mA at 5.1V DC and 3mA at 24V DC.
Isolation voltage: 30V DC, basic insulation can be tested for one minute between the control network and the system at 500V.
Dissipative power: 6.6W, corresponding to 22.5BTU/hour.
Environmental parameters
Working temperature: 0 ℃ to 60 ℃.
Storage temperature: -20 ℃ to+60 ℃.
Other
Chassis compatibility: Can be installed in any available slot of standard chassis such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17, etc.
Power compatibility: Can be used with standard ControlLogix power supplies such as 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B.

Product Performance
communication performance
High speed communication: Supports ControlNet communication protocol, with a communication speed of up to 5Mbps, which can meet the high real-time requirements of industrial application scenarios and achieve fast data exchange and control instruction transmission between devices.
Connectivity: Supports up to 128 Logix connections and 131 communication connections, capable of connecting multiple automation devices and building complex industrial automation systems.
Network function
Redundancy function: It has two control network ports, supports redundant media, and can achieve redundancy between ControlNet nodes by running a second trunk cable, improving the reliability and fault tolerance of the system. When one line fails, it can automatically switch to another line to ensure the continuity of data communication.
Topology flexibility: It can be connected to the ControlNet network using 1786-RG6 quad shielded RG6 coaxial cables, supporting a coverage range of 1000 meters per segment, and can be extended to over 1000 meters through repeaters. It is suitable for implementing distributed I/O topologies and can flexibly construct network topology structures according to actual application scenarios.
Protocol support: Provide control network through Common Industrial Protocol (CIP) and enhance functionality through peer-to-peer network, enabling seamless communication and interaction with other devices that support CIP protocol, achieving control, configuration, and data collection of industrial grade equipment.

application area
Industrial automation: As a data communication component of control systems, it can connect various automation equipment such as PLCs, sensors, actuators, robots, etc., achieve data exchange and management between equipment, build complex automated production lines, and achieve automation control and monitoring of production processes.
Process control: In process industries such as chemical, petroleum, power, metallurgy, etc., it is used to achieve real-time monitoring and regulation of parameters such as temperature, pressure, flow rate, and liquid level in the production process, helping workers to timely grasp the status of the production process, make adjustments and optimizations, and ensure the stable operation of the production process and product quality.
Safety control: By utilizing its redundant functions and high reliability, it ensures the reliability of the system in various emergency situations in industries with high safety requirements, such as chemical, power, mining, etc., ensuring the normal operation of safety related equipment, realizing safety interlock control and emergency shutdown functions.
Human Machine Interface and Monitoring System: It can communicate with Human Machine Interface (HMI) devices and Supervisory Control and Data Acquisition (SCADA) systems to achieve centralized monitoring and management of the entire industrial system. Operators can view real-time equipment operation status, production data, and other information through HMI devices or SCADA systems, and remotely control and adjust parameters.