1756-CNBR D  网桥冗余 进行通信的接口模块

【产品详情】

Allen-Bradley 1756-CNBR 或 ControlNet 网桥冗余是用于在 ControlNet 网络内进行通信的接口模块。它与 1756-CNB 相同，但最大的区别是 1756-CNBR 有一个额外的 ControlNet 端口，它将支持冗余媒体。该模块有 2 个 ControlNet BNC 端口，而 1756-CNB 只有一个，尽管它们都有 1 个 ControlNet RJ45 端口。

与非冗余模块一样，1756-CNBR 还与 Logix5550 控制器一起控制计划数据，并在 ControlLogix 背板和 ControlNet 网络之间桥接计划外数据。

为防止分流器或干线断开时通信丢失，可以使用冗余的 ControlNet 介质。对于该连接，您可以使用的唯一模块是 1756-CNBR。

该模块的技术规格也与非冗余模块类似。它还可以处理多达 64 个与其他 ControlNet 设备的双向计划和计划外连接。除此之外，该模块最多可以支持 20 个用于未连接消息的缓冲区。此外，如果您的应用程序每个通信模块有 40 到 48 个 Logix 通信连接，并且通信速率为每秒 5 兆字节，则这是所需的模块。它还具有 99 个可用节点。

1756-CNBR 的电流消耗在 970.5 V DC 时为 1 毫安，在 1 V DC 时为 7.24 毫安。

在进行连接之前，请务必检查分接器电缆上是否有指示连接段的标签。这是为了确保分接器连接不会意外反转。否则，这些反转将需要进行故障排除，并且状态将显示不正确。

Allen-Bradley 1756-CNBR是一款ControlNet桥接模块.该模块是 ControlLogix 产品系列的一部分，用于连接 ControlLogix 控制器或通过高速 ControlNet 网络实现分布式 I/O 架构。该模块具有两 （2） 个 ControlNet 端口，可连接到标准（单工）和冗余 ControlNet 网络。

1756-CNBR支持5Mbps的传输速率，这是ControlNet协议的标准传输速率。它使用四屏蔽 RG-6 同轴电缆作为干线电缆，并使用 ControlNet 抽头与干线电缆建立连接。该模块支持 40-48 个逻辑通信连接，最多支持 64 个连接。1756-CNBR 支持的最大节点数为 99 个节点。

1756-CNBR 可以作为本地通信模块安装在 ControlLogix 处理器上，也可以作为头部通信模块安装在任何分布式 I/O 机架上。它与各种 ControlLogix 机架兼容，例如 1756-A4、1756-A7、1756-A10、1756-A13 和 1756-A17。它可以安装到任何可用的插槽上，并且只需要机箱中的单个插槽。它还可用于标准和冗余电源，例如 1756-PA72/C、1756-PA75/B、1756-PB72/C、1756-PB75/B、1756-PC75/B、1756-PH75/B 和 1756-PA75R、1756-PB75R、1756-PSCA2。

1756-CNBR 具有额外的一 （1） 个用于本地编程的网络访问端口 （NAP），这是一个 8 针 RJ45 物理端口。

1756-CNBR 通信模块采用背板供电，在 970.5VDC 时消耗 1 mA 电流，在 1VDC 时消耗 7.24 mA 电流。它的功耗为 5.1 瓦，散热为 17.4 BTU/小时。

1756-CNBR 的常见问题

1756-CNBR使用的通信电缆是什么？

1756-CNBR 使用 1786-RG6 四屏蔽 RG6 同轴电缆。

1756-CNBR支持的通信速率是多少？

1756-CNBR 支持 5Mbps 通信速率。

1756-CNBR支持的最大节点数是多少？

1756-CNBR 最多支持 99 个节点。

1756-CNBR D  网桥冗余 进行通信的接口模块

【英文介绍】

Allen-Bradley 1756-CNBR or ControlNet Bridge redundancy is an interface module for communication within the ControlNet network. It is the same as the 1756-CNB, but the biggest difference is that the 1756-CNBR has an additional ControlNet port, which will support redundant media. The module has 2 ControlNet BNC ports, while the 1756-CNB has only one, although they both have 1 ControlNet RJ45 port.

Like the non-redundant module, the 1756-CNBR also controls schedule data with the Logix5550 controller and Bridges unscheduled data between the ControlLogix backplane and the ControlNet network.

To prevent communication loss when the shunt or trunk is disconnected, redundant ControlNet media can be used. The only module you can use for this connection is 1756-CNBR.

The technical specifications of this module are also similar to those of non-redundant modules. It can also handle up to 64 two-way planned and unplanned connections to other ControlNet devices. In addition, the module can support up to 20 buffers for unconnected messages. Also, if your application has 40 to 48 Logix communication connections per communication module and a communication rate of 5 megabytes per second, this is the module you need. It also has 99 nodes available.

The current consumption of the 1756-CNBR is 1 MA at 970.5 V DC and 7.24 Ma at 1 V DC.

Before making a connection, be sure to check that there is a label on the adapter cable indicating the connection segment. This is to ensure that the taper connection does not accidentally reverse. Otherwise, these inversions will need to be troubleshooting, and the status will display incorrectly.

The Allen-Bradley 1756-CNBR is a ControlNet bridge module. This module is part of the ControlLogix product family and is used to connect ControlLogix controllers or to implement a distributed I/O architecture over a high-speed ControlNet network. The module has two (2) ControlNet ports for connection to both standard (simplex) and redundant ControlNet networks.

The 1756-CNBR supports a transfer rate of 5Mbps, which is standard for the ControlNet protocol. It uses four-shielded RG-6 coaxial cable as the trunk cable and uses ControlNet taps to establish connections to the trunk cable. The module supports 40-48 logical communication connections up to 64 connections. 1756-CNBR supports a maximum of 99 nodes.

The 1756-CNBR can be installed as a local communication module on the ControlLogix processor or as a head communication module on any distributed I/O rack. It is compatible with various ControlLogix racks, such as the 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17. It can be installed into any available slot and requires only a single slot in the case. It can also be used with standard and redundant power supplies, Examples include 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B, and 1756-PA75R, 1756-PB75R, 1756-PSCA2.

The 1756-CNBR has an additional one (1) Network access port (NAP) for local programming, which is an 8-pin RJ45 physical port.

The 1756-CNBR communication module is powered by a backplane that consumes 1 mA at 970.5VDC and 7.24 mA at 1VDC. It has a power consumption of 5.1 watts and a heat dissipation of 17.4 BTU/ hour.

1756-CNBR Frequently Asked questions

What is the communication cable used by the 1756-CNBR?

The 1756-CNBR uses a 1786-RG6 four-shielded RG6 coaxial cable.

1756-What is the communication rate supported by CNBR?

The 1756-CNBR supports a communication rate of 5Mbps.

1756- What is the maximum number of nodes supported by CNBR?

1756-CNBR supports a maximum of 99 nodes.

1756-CNBR D  网桥冗余 进行通信的接口模块

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