Siemens SINUMERIK 828D - System Versions Horizontal and Vertical

System description
2.2 System versions horizontal and vertical
Hardware and Software
Service Manual, 03/2011, 6FC5397-5DP40-0BA0
15
2.2 System versions horizontal and vertical
Front of the PPU versions 26x.2 and 28x.2
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① Protective cover for user interfaces
② Menu back key
③ Alphabetic key group
④ Control key group
⑤ Hotkey group
⑥ Cursor key group