系统冗余模块 1757-SRC1  具有一个光纤端口

1757-SRM

描述： Allen-Bradley 1757-SRM 是 ProcessLogix 和 ControlLogix 系统冗余模块。该模块通过与另一个 ControlLogix 机箱中的另一个 1756-SRM 配对来实现控制器冗余。该模块是一个两 （2） 插槽模块，带有集成光纤端口，兼容带 SC 连接器的 62.5/125 微米多模光纤电缆。

实施冗余控制器系统时，必须安装两 （2） 个相同的 ControlLogix 机箱。机箱尺寸、安装的模块和位置、系统电源和模块版本应相互匹配。这符合冗余控制器设置的条件。其中一个机箱称为主机箱，而另一个机箱称为辅助机箱。

1757-SRM 具有一个光纤端口，其中连接了带有 SC 连接器的 62.5/125 微米多模光纤电缆。电缆的另一端连接到安装在另一个 ControlLogix 机箱上的合作伙伴 1757-SRM。该电缆用作模块和整个辅助机架的同步链路。

冗余模块是一种用于提高系统可靠性的模块，它通常用于工业自动化、通信、航空航天等领域。

1757-SRM 冗余模块的原理是通过提供多个相同或类似的模块来实现冗余，当其中一个模块出现故障时，其他模块可以自动接管其工作，从而保证系统的正常运行。冗余模块通常包括电源冗余、控制器冗余、通信冗余等。

冗余模块的优点包括：

1. 提高了系统的可靠性：1757-SRM 冗余模块可以保证系统在单个模块出现故障时仍能正常运行，减少了系统停机时间和故障损失。

2. 提高了系统的可用性：1757-SRM 冗余模块可以提高系统的可用性，保证系统在需要时能够正常工作。

3. 提高了系统的可维护性：1757-SRM 冗余模块可以方便地进行维护和更换，减少了系统停机时间和维护成本。

常见的冗余模块包括电源冗余模块、控制器冗余模块、通信冗余模块等。它们具有不同的特点和应用场景，适用于不同的系统可靠性需求。

 系统冗余模块 1757-SRC1  具有一个光纤端口

1757-SRM

Description: Allen-Bradley 1757-SRM is a redundant module for ProcessLogix and ControlLogix systems. This module enables controller redundancy by pairing with another 1756-SRM in another ControlLogix chassis. The module is a two (2) slot module with an integrated fiber port that is compatible with 62.5/125 micron multimode fiber cables with SC connectors.

When implementing a redundant controller system, two (2) identical ControlLogix enclosures must be installed. The chassis dimensions, installed modules and positions, and system power supply and module versions must match each other. This meets the conditions set by the redundant controller. One of the enclosures is called the main box, while the other is called the auxiliary box.

The 1757-SRM has a fiber optic port where a 62.5/125 micron multimode fiber cable with SC connector is connected. The other end of the cable connects to the partner 1757-SRM mounted on another ControlLogix chassis. This cable serves as a synchronous link between the module and the entire auxiliary frame.

Redundancy module is a kind of module used to improve the reliability of the system, which is usually used in industrial automation, communication, aerospace and other fields.

The principle of the 1757-SRM redundancy module is to achieve redundancy by providing multiple identical or similar modules, and when one module fails, the other modules can automatically take over its work, thus ensuring the normal operation of the system. Redundant modules usually include power supply redundancy, controller redundancy, communication redundancy, etc.

Advantages of redundant modules include:

1. Improved system reliability: The 1757-SRM redundancy module can ensure that the system can still operate normally when a single module fails, reducing system downtime and failure losses.

2. Improves the availability of the system: The 1757-SRM redundancy module can improve the availability of the system and ensure that the system can work normally when needed.

3. Improve the maintainability of the system: The 1757-SRM redundancy module can be easily maintained and replaced, reducing system downtime and maintenance costs.

Common redundant modules include power supply redundant modules, controller redundant modules, and communication redundant modules. They have different characteristics and application scenarios, and are suitable for different system reliability requirements.