Siemens sinumerik 840D sl Function Manual page 754

Functionality
The following modes are available for starting/stopping/resetting the RESU function:
• CC_PREPRE(1)
• CC_PREPRE(0)
• CC_PREPRE(-1)
RESET response
When resetting:
• NCK POWER ON RESET (warm start)
• NC-RESET
• End of program (M30)
CC_PREPRE(-1) is executed implicitly.
Fault messages
The following programming errors are detected and displayed with alarms:
• Invalid mode programmed:
• More than one parameter programmed:
Special functions: Retrace Support (TE7)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Starts logging the traversing blocks.
The information required for reverse travel is logged on a block-specific basis in a RESU-
internal block buffer. The traversing information refers to the 1st and 2nd geometry axes
of the channel:
MD20050 $MC_AXCONF_GEOAX_ASSIGN_TAB[x]; with x = 0 and 1 (assignment of
geometry axis to channel axis)
Or, if transformation is active:
MD24120 $MC_TRAFO_GEOAX_ASSIGN_TAB[x]; with x = 0 and 1 (assignment of GEO
axes to channel axes for transformation 1)
Stops logging the traversing blocks.
Thus irrelevant contour areas can be excluded from the log.
These excluded contour areas are bridged by a straight line between the starting point
and end point during reverse travel.
Deactivates logging of the traversing blocks and deletes the function-internal block buffer.
Contour areas located before the instant of deactivation of the part program are therefore
no longer available to RESU.
– RESU alarm "75601 Channel
CC_PREPRE( )"
– Alarm "12340 Channel
number number
Block
number number
Block
Detailed description
Invalid parameter for
Too many parameters"
2.3 Programming
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