2711P-K4M20A8 显示终端
Allen-Bradley 2711P-K4M20A8是PanelView Plus 6 400单色操作终端的一部分。该操作终端或人机界面（HMI）设备非常适合微型和小型自动化要求。它是一种紧凑型电子设备，允许根据工艺要求添加组件。
2711P-K4M20A8 由 100-240V AC 的外部电源电压和 50-60 Hz 的频率供电。它的大功耗为35VA，典型功耗为20VA。该操作终端配有电池备份时钟，每月准确±2分钟为关键数据加时间戳。当电池在 4 °C （25 °F） 的低温度下运行时，预计可持续使用长达 77 年。该电池可使用目录号 2711P-RY2032 或任何等效的 CR2032 纽扣锂电池进行现场更换。
2711P-K4M20A8 的系统内存为 256 个随机存取存储器 （RAM） 和 512 个非易失性存储器，以及大约 73 MB 的可用用户存储器。此系统内存可以通过安装安全数字 （SD） 卡进行扩展。USB 闪存驱动器也可以通过插入任何可用的 USB 端口来用作可移动存储。
Allen Bradley 2711P-K4M20A8 is part of the PanelView Plus 6 400 monochrome operating terminal. This operating terminal or human-machine interface (HMI) device is very suitable for micro and small automation requirements. It is a compact electronic device that allows components to be added according to process requirements.
The 2711P-K4M20A8 is powered by an external power supply voltage of 100-240V AC and a frequency of 50-60 Hz. Its maximum power consumption is 35VA, with a typical power consumption of 20VA. This operating terminal is equipped with a battery backup clock, which accurately stamps critical data by ± 2 minutes per month. When the battery is operated at a minimum temperature of 4 ° C (25 ° F), it is expected to last for up to 77 years. This battery can be replaced on-site using catalog number 2711P-RY2032 or any equivalent CR2032 button lithium battery.
The system memory of 2711P-K4M20A8 consists of 256 random access memory (RAM) and 512 non-volatile memory, as well as approximately 73 MB of available user memory. This system memory can be expanded by installing a Secure Digital (SD) card. USB flash drives can also be used as removable storage by plugging into any available USB port.
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