Operator components: An operator and visualization system for SINUMERIK 810D/840Di/840D comprises a SINUMERIK PCU, a SINUMERIK operator panel front and supplementary operator components
URL: http://www.automation.siemens.com/mc/mc-sol/en/43129d1a-eb12-4d4b-a8b8-54e1569a9ce8/index.aspx
URL: http://www.automation.siemens.com/mc/mc-sol/en/a2bd1b49-5d71-49c4-a3a3-4c97faca2916/index.aspx?mode=fulltextsearch&searchfortext=visualization