1756-L72 控制器模块

Allen-Bradley 1756-L72 是一款 ControlLogix 系列可编程自动化控制器 （PAC）。它具有用于数据和逻辑的 4 MB 用户存储器和 0.98 MB I/O 存储器。控制器随附 1 GB SD 卡 1784-SD1，可用作可选的非易失性存储器存储。如果存储空间不足以供您使用，您也可以通过 1784-SD2 卡将其升级到 2 GB。建议将 SD 卡安装到控制器上，并且仅使用罗克韦尔自动化销售的 SD 卡，因为这些卡已经过全面测试，可与控制器配合使用。使用其他SD卡会带来数据丢失或损坏的风险。SD 卡主要用于存储发生故障时自动写入的诊断数据。罗克韦尔自动化将这些数据用于故障排除目的。1756-L72控制器还配备了三个电容储能模块。1756-ESMCAP/1756-ESMCAPK 是每个控制器中可用的可拆卸模块。另一个可移动模块是1756-ESMNSE / 1756-ESMNSEK，它没有剩余的WallClockTime电源备份。唯一不可拆卸的模块是 1756-ESMNRM/1756-ESMNRMK，它有助于防止 USB 连接和 SD 卡的使用，以帮助保护控制器。

Allen Bradley 1756-L72 is a ControlLogix series Programmable Automation Controller (PAC). It has 4 MB user memory and 0.98 MB I/O memory for data and logic. The controller comes with a 1 GB SD card 1784-SD1, which can be used as optional non volatile memory storage. If there is not enough storage space for you to use, you can also upgrade it to 2 GB using a 1784-SD2 card. It is recommended to install SD cards on the controller and only use SD cards sold by Rockwell Automation, as these cards have been fully tested and can be used in conjunction with the controller. The use of other SD cards poses a risk of data loss or damage. SD cards are mainly used to store diagnostic data that is automatically written when a fault occurs. Rockwell Automation uses this data for troubleshooting purposes. The 1756-L72 controller is also equipped with three capacitor energy storage modules. 1756-ESMCAP/1756-ESMCAPK are detachable modules available in each controller. Another movable module is 1756-ESMNSE/1756-ESMNSEK, which does not have any remaining WallClockTime power backup. The only non detachable module is 1756-ESMNRM/1756-ESMNRMK, which helps prevent USB connections and SD card usage to help protect the controller.