01.99 4 Machine
© Siemens AG 1999 All Rights Reserved 6FC5198-6AA60-0BP1
SINUMERIK 840C, OEM Version for Windows (BA)
4-67
Table 4-6 How SINGLE BLOCK and DEC SINGLE BLOCK work
Block type Single block Decoding single
block
Traversing blocks
X
1
)X
1
)
Blocks without position data
X
1
)X
1
)
Arithmetic blocks
X
1
)
Switching and auxiliary function blocks
X
1
)X
1
)
Blocks generated within the circuit / CRC .3)
X
1
)X
1
)
Blocks generated within the control / CRC... 3)
2
)X
1
)
Threading blocks without dry run feedrate
X
1
)X
1
)
1) Single block
2) Single block: A stop comes into effect only at the end of a current block without thread.
3) With tool radius compensation.
• Blocks can no longer be stopped if they have been preprocessed in the buffer memory but not yet
executed without the "Decoding single block" being present.
• A "Decoding single block" can be modified by "Overstore".
Note
With some functions (e.g. contour definition, tool radius compensation, soft
approach to contour) additional blocks are inserted by the control. Depending
on the number of insertions, the NC START key may have to be pressed
several times.
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