Allen-Bradley 1756-L74 可编程自动化控制器

【产品详情】

Allen-Bradley 1756-L74 是一款可编程自动化控制器 （PAC），用于实现工厂和过程自动化要求。该控制器采用现代设计，专门满足当今工业自动化要求的要求。

1756-L74 是一款单槽宽控制器，采用紧凑的组件设计。它是一种基于机箱的设备，由分配给机箱电子电路的背板电源在内部供电。该控制器兼容安装在为 ControlLogix 系统制造的所有可用机箱中，例如 1756-A4、1756-A4K、1756-A7、1756-A7K、1756-A10、1756-A10K、1756-A13、1756-A13K、1756-A17、1756-A17 K。 1756-L74 是一款环保型控制器，因为它利用储能模块而不是电池来保存随机存取存储器 （RAM） 的内容。

储能模块是基于电容器的，这意味着RAM存储器由存储在电容器内的能量保留。这些储能模块是可拆卸和可更换的。对于此控制器，预装了 1756-ESMCAP，而其他兼容模块包括 1756-ESMNSE、1756-ESMNSEK、1756-ESMNRM 和 1756-ESMNRMK。

1756-L74 配备 16MB 用户内存、0.98 MB I/O 内存，并通过 1784-SD1 配备 1GB 非易失性内存。通过替换现有单元 1784-SD2、2 GB 安全数字 （SD） 卡，非易失性存储器可扩展至 2GB。

1756-L74 通过内置的 USB 通信端口进行通信，但是，该端口不适合工业通信。出于上述目的，用户可以安装支持特定通信协议的附加通信适配器，例如 EtherNet/IP、ControlNet、DeviceNet、Data Highway Plus、远程 I/O、SynchLink 以及第三方过程和设备网络。

Allen-Bradley 1756-L74 可编程自动化控制器

【英文介绍】

The Allen-Bradley 1756-L74 is a programmable automation controller (PAC) for plant and process automation requirements. The controller is designed to meet the requirements of today's industrial automation requirements.

The 1756-L74 is a single slot width controller with a compact component design. It is a chassis based device that is powered internally by a backplane power supply assigned to the electronics circuitry in the chassis. The controller is compatible to be installed in all available cases manufactured for ControlLogix systems, Examples include 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K, 1756-A17, 1756-A17 K. The 1756-L74 is an environmentally friendly controller because it uses energy storage modules instead of batteries to store the contents of random access memory (RAM).

The energy storage module is capacitor based, which means that the RAM memory is retained by the energy stored inside the capacitor. These energy storage modules are removable and replaceable. For this controller, the 1756-ESMCAP is pre-installed, while other compatible modules include 1756-ESMNSE, 1756-ESMNSEK, 1756-ESMNRM, and 1756-ESMNRMK.

The 1756-L74 is equipped with 16MB of user memory, 0.98MB of I/O memory, and 1GB of non-volatile memory via the 1784-SD1. The non-volatile memory can be expanded to 2GB by replacing the existing unit 1784-SD2, 2GB secure digital (SD) card.

The 1756-L74 communicates via a built-in USB communication port, however, this port is not suitable for industrial communication. For the above purposes, users can install additional communication adapters that support specific communication protocols, such as EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, remote I/O, SynchLink, and third-party process and device networks.

Allen-Bradley 1756-L74 可编程自动化控制器

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