Siemens SINUMERIK 840D sl Function Manual page 719

For all frame types except the programmable frame, one or more frames exist in the data
management (data management frames) in addition to the frame active in the channel. For
the programmable frame, only the frame active in the channel exists.
Writing frames
Data management frames and active frames can be written from the part program. Only data
management frames can be written via the user interface.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
K2: Axis Types, Coordinate Systems, Frames
10.5 Frames
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