Boundary Conditions; Block Search - Siemens SINUMERIK 840D sl Function Manual

16.6

Boundary conditions

16.6.1

Block search

Switching signal output for block search
If a block search is on a part program block which lies after a CC_FASTON() procedure call
for activating the technology function, then the switching signal is activated with the next
traversing motion. One of the specific consequences of this is to initiate travel along the
contour from the start position of the geometry axes back to the program continuation point
with an activated switching signal.
Example
Normal process:
In the normal process of the part program machining, the switching signal is activated for the
first time at the beginning of part program block N60.
Figure 16-4
Process sequence after block search:
If a block search is executed for the block end point of part program block N60 the switching
signal is activated on reaching the start position of the geometry axes.
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
TE8: Cycle-independent path-synchronous switching signal output
Switching signal for part program machining operation
16.6 Boundary conditions
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