Siemens SINUMERIK 840Di Function Manual page 730

Brief Description
1.3 Frames
Properties of the NCU global basic frames:
• Can be read and written from all channels.
• Can only be activated in the channels.
• Up to 16 NCU global basic frames are available.
Global frames can be used to apply offsets, scale factors and mirroring operations to
channel and machine axes.
All basic frames (up to 16 global and 16 channel-specific) are chained to produce the total
basic frame. The standard configuration is designed for at least one basic frame per channel.
Settable frames can be defined as either NCU global or channel-specific.
Channel coordination
With NCU global frames, the user must ensure channel coordination and activation of the
frames (e.g., using the WAITMC command), to allow the frames to be calculated at the
desired point in the program.
Cross-channel activation of frames is not supported.
1-8
Axis Types, Coordinate Systems, Frames (K2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0