Detailed Description
2.1 Various interface signals and functions (A2)
Basic logic functions: NC/PLC interface signals (Z1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
27
DB19
DBX41.0 - DBX41.7
Channel number (FC9: ChanNo)
Edge evaluation: no
Signal(s) updated: cyclic
Meaning
This byte contains the channel number (FC9: ChanNo).
DB19
DBX42.0
FC9: Start (measuring in Jog mode)
Edge evaluation: no
Signal(s) updated: cyclic
Signal state 1 or
edge change 0 → 1
Start active
Signal state 0 or
edge change 1 → 0
Start inactive
2.1.6
Signals to channel (DB21, ...)
DB21, ...
DBX6.2
Delete distancetogo (channelspecific)
Edge evaluation: no
Signal(s) updated: cyclic
Signal state 1 or
edge change 0 → 1
Delete distancetogo (channelspecific):
IS "Delete distancetogo (channelspecific)" for path axes is only active in AUTOMATIC mode.
The rising edge of the interface signal is only effective for the axes involved in the geometry
grouping. These are also stopped with a ramp stop and their distancetogo deleted (setpoint - actual
value difference). Any remaining following error is not removed. The next program block is then
started.
IS "Delete distancetogo (channelspecific)" is therefore ignored by positioning axes.
Note:
IS "Delete distancetogo" does not influence the running dwell time in a program block with dwell
time.
Signal state 0 or
edge change 1 → 0
No effect
Signal irrelevant for
...
Positioning axes
Application
example(s)
To terminate motion because of an external signal (e.g. measuring probe)
Special cases,
errors, ....
Delete distancetogo (channelspecific)
When the axes have been stopped with IS "Delete distancetogo" the next program block is
prepared with the new positions. After a "Delete distance-to-go", geometry axes thus follow a
different contour to the one originally defined in the part program.
If
G90
is programmed in the block after "Delete distancetogo" it is at least possible to approach the
programmed absolute position. On the other hand, with
G91
, the position originally defined in the
part program is no longer reached in the following block.
Corresponding to .... DB21, ... DBX6.2 (delete distance-to-go (axis-specific))
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...