During the retrofit, the existing Sinumerik PCU50 and MMC103 hardware and software components are removed and replaced with a Simatic IPC 427D industrial PC with Windows 10 and up-to-date HMI Advanced (human-machine interface) operating software.
Source URL: Siemens introduces "PCU Retrofit for Sinumerik 840D" service
Source Website: Factory Automation – Automation.com
