SINUMERIK PCU 20 不需要硬盘，并已内置有 MPI/PROFIBUS DP 通讯功能。以太网接口和软驱作为选件提供。SINUMERIK PCU 20 标准安装有 HMI-Embedded 用户界面（简体中文/英语/法语/德语/意大利语/西班牙语）其它语言的 HMI-Embedded 用户界面可单独订货（请参见“数控系统 HMI 软件”）。
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