Function Description; Function - Siemens SINUMERIK 840D sl Function Manual

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TE7: Continue machining at the contour (retrace support) - 840D sl only

19.2 Function description

compensation) are mapped as straight lines through the start and end points of the

corresponding contour element, thereby preventing precise retracing of contours.

Function code

The code for the "Continue Machining - Retrace support" technological function for function-

specific identifiers of program commands, machine data, etc. is:

RESU (= REtrace SUpport)

Restrictions

The use of the "Continue Machining Retrace support" technological function is subject to the

following restrictions:

● The technological function is available only in the 1st channel of NC.

● Program continuation or reverse travel is only possible for part program blocks that contain

traversing blocks in the configured RESU working plane (e.g. 1st and 2nd geometry axis

of the channel, see Section "Definition of the RESU working plane (Page 706)").

The "Continue Machining - Retrace support" technological function is a compile cycle. For the

handling of compile cycles, see Section "TE01: Installation and activation of loadable compile

cycles (Page 549)".

Function description

Block search with calculation on contour

To be able to resume interrupted machining at a specific point in a part program, a block search

can be carried out using the "Block search with calculation on contour" standard function.

However, detailed knowledge of the part program is required to be able to enter the block

number of the part program block required for the block search (i.e. the number of the block

the search needs to locate).

Continue machining - Retrace support

The "Continue machining - Retrace support" technological function supports the continuation

of the machining operation by means of an implicit block search with calculation on the contour

without the machine operator needing to know the part program block required.

Function Manual, 01/2015, 6FC5397-2BP40-5BA2

Special functions

Sinumerik 828d Sinumerik 840de sl