1756-CN2R ControlLogix 通信模块  网络拓扑中建立连接

【产品详情】

Allen-Bradley 1756-CN2R 是 ControlLogix 通信模块，是 Logix 控制器平台的一部分。该模块主要用于在冗余 ControlNet 网络拓扑中建立连接，因为它具有两 （2） 个 BNC ControlNet 端口。该模块占用黑箱的单个插槽，可以安装到标准机箱的任何可用插槽中，例如 1756-A4、1756-A7、1756-A10、1756-A13、1756-A17，并与标准 ControlLogix 电源一起使用，特别是 1756-PA72/C、1756-PA75/B、1756-PB72/C、1756-PB75/B、1756-PC75/B、1756-PH75/B 和冗余电源，例如 1756-PA75R， 1756-PB75R，1756-PSCA2。ControlNet 网络是一种利用同轴电缆干线的多节点通信网络，节点使用引入电缆在干线处连接。该特定模块使用 1786-RG6 四屏蔽 RG6 同轴电缆连接到网络。1756-CN2R 支持高达 5 Mbps 的传输速度。除了双 ControlNet 端口外，1756-CN2R 还配备了一 （1） 个 USB 端口，支持全速 12 Mbps 的传输速率。它不能用于数据通信目的。该模块适用于实现分布式 I/O 拓扑，因为它每段最多可覆盖 1000 米，通过使用中继器作为长度超过 1000 米的 ControlNet 网段的信号增强器，可以轻松扩展。它还可以与人机界面 （HMI） 设备以及监控和数据采集 （SCADA） 系统进行通信。它最多支持 128 个 Logix 连接和最多 131 个通信连接。

Allen-Bradley 的 1756-CN2R ControlNet Connections per Communication Module 是一个连接到 ControlLogix 机箱插槽的通信模块，通过通用工业协议 （CIP） 提供 ControlNet 网络，并通过点对点网络提供增强功能。它具有冗余配置类型，在最多 5 个节点上以 99Mbps 的速率进行通信。1756-CN2R 最多有 128 个 Logix 通信连接。它在 5.1V DC 时具有 1300mA 的消耗电流，在 24V DC 时具有 3mA 的消耗电流，并以 22.5 BTU/hr 的速度散发 6.6W 热量。它具有 30V 直流隔离电压，在 ControlNet 和系统之间以 500V 测试基本绝缘一分钟。1756-CN2R 具有双 ControlNet BNC、一个 ControlNet RJ45 和一个 USB 1.1 端口，用于与其他设备连接和通信。它采用开放式外壳类型，符合 T4 IEC 温度规范和 T4A 北美温度规范。1756-CN2R 的工作温度范围为 0 至 60 摄氏度（32 至 140 华氏度），相对湿度为 5-95%，在 10-500Hz 时，其工作冲击率为 30G，最大振动为 2G。

1756-CN2R ControlLogix 通信模块  网络拓扑中建立连接

【英文介绍】

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 single slot in the black box, can be installed into any available slot in a standard chassis, such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17, and is 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 coaxial cable trunks, with nodes connected at 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 transfer rate of 12 Mbps. It cannot be used for data communication purposes. This module is suitable for implementing distributed I/O topologies because it covers up to 1000 meters per 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 99Mbps on up to 5 nodes. The 1756-CN2R has up to 128 Logix communication connections. It has a consumption current of 1300mA at 5.1V DC and 3mA at 24V DC, and emits 6.6W of heat at 22.5 BTU/hr. It has a 30V DC isolation voltage and tests basic insulation 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 that complies with the T4 IEC temperature specification and the T4A North American Temperature specification. The 1756-CN2R operates in a temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit), with a relative humidity of 5-95%, an operating shock rate of 30G and a maximum vibration of 2G at 10-500Hz.

1756-CN2R ControlLogix 通信模块  网络拓扑中建立连接

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