Channel-Specific Frames ($P_Chbfr, $P_Ubfr) - Siemens SINUMERIK 840D sl Programming Manual

Coordinate transformation (FRAMES)
5.7 NCU global frames
NCU-global settable frames $P_UIFR[n]
All settable frames G500, G54...G599 can be configured NCU globally or channel-
specifically.
Machine manufacturer
All settable frames can be reconfigured as global frames with the aid of machine data
$MN_MM_NUM_GLOBAL_USER_FRAMES.
Channel axis identifiers and machine axis identifiers can be used as axis identifiers in frame
program commands. Programming of geometry identifiers is rejected with an alarm.
5.7.1

Channel-specific frames ($P_CHBFR, $P_UBFR)

Function
Settable frames or basic frames can be read and written by an operator action or from the
PLC:
● via the parts program, or
● via the operator panel interface.
The fine offset can also be used for global frames. Suppression of global frames also takes
place, as is the case with channel-specific frames, via G53, G153, SUPA and G500.
Machine manufacturer
The number of basic frames can be configured in the channel via MD 28081
MM_NUM_BASE_FRAMES. The standard configuration is designed for at least one basic
frame per channel. A maximum of eight basic frames are supported per channel. In addition
to the eight basic frames, there can also be eight NCU-global basic frames in the channel.
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Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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