The SINUMERIK operator panel front OP 019 can be used for:

• SINUMERIK 840D sl:
  SINUMERIK PCU 50.5

For the USB 2.0 port at the front, there is a USB extension available for installation in control desks.

The optional SINUMERIK direct key module provides an additional connection of the 2 ? 8 vertical softkeys as direct keys to the PROFIBUS DP if no SINUMERIK Machine Push Button Panel or machine control panel with connection of the direct keys is available or if the direct key commands cannot be transferred over the Thin Client.