使用初级和备份适配器为1756-EN4TR Controllogix以太网/IP通信模块，可以使工业生产商提高其网络弹性。通过最近对通信模块的固件更新提供了这种新的冗余适应器功能。
In addition to helping users improve network redundancy, the module’s firmware enhancement also offers more advantages:
- No single point of failure: When used with ControlLogix controllers and redundant switches, the communication module is no longer a single point of failure, which improves uptime and productivity in continuous process applications like oil and gas
- Architecture options: The firmware enhancement can be used with a single ControlLogix controller or redundant controllers, or with star or Device Level Ring (DLR) architectures, giving users design flexibility
- 易于修改：现有的1756 I/O底盘可以使用插槽0和1修改冗余适配器
1756-EN4TR通信模块在1756 Controllogix机箱中为用户，设备和网络实现基于网络的访问控制。该模块可以通过1 Gbit/sec的通信速度以及支持将来的网络或基础架构扩展的能力来提高网络操作的性能。
有关更多信息，请访问www.rockwellautomation.com。
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