1756-CNBR 通信模块

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 网络之间桥接非计划数据。
为了防止在分路器或干线断开连接时丢失通信，可以使用冗余的 ControlNet 介质。对于该连接，您唯一可以使用的模块是 1756-CNBR。
该模块的技术规格也类似于非冗余模块。它还可以处理多达 64 个与其他 ControlNet 设备的双向计划和非计划连接。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 MB，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 伏直流时为 1 毫安，在 1 伏直流时为 7.24 毫安。
在进行连接之前，请确保检查分接线的标签，以指示所连接段。这是为了确保分接头连接不会意外反转。否则，这些反转将需要故障排除，并且状态将显示不正确。
Allen-Bradley 1756-CNBR是一个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。

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

Like non redundant modules, the 1756-CNBR also controls planned data together with the Logix5550 controller and bridges unplanned data between the ControlLogix backplane and the ControlNet network.

To prevent communication loss when the splitter 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 non redundant modules. It can also handle up to 64 bidirectional planned and unplanned connections with other ControlNet devices. In addition, the module can support up to 20 buffers for unconnected messages. In addition, if your application has 40 to 48 Logix communication connections per communication module and a communication rate of 5 MB per second, then this is the required module. It also has 99 available nodes.

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

Before connecting, make sure to check the label of the branch wire to indicate the connected segment. This is to ensure that the tap connection does not accidentally reverse. Otherwise, these reversals will require troubleshooting and the status will display incorrectly.

Allen Bradley 1756-CNBR is a ControlNet bridging module. This module is part of the ControlLogix product family and is used to connect ControlLogix controllers or implement a distributed I/O architecture through a high-speed ControlNet network. This module has two (2) ControlNet ports that can be connected to both standard (simplex) and redundant ControlNet networks.