Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
Basic Functions
1624
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
19.1.7
Signals from channel (DB21, ...)
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))
DB21, ...
DBX36.6
Channelspecific NCK alarm is active
Edge evaluation: no
Signal(s) updated: cyclic
Signal state 1 or
edge change 0 → 1
At least one NCK alarm is present for this channel.
Thus the following group interface signal is also set:
DB10 DBX109.0 (NCK alarm is present)
The PLC user program can interrogate whether processing for the channel in question has been
interrupted because of an NCK channel:
DB21, ... DBX36.7 (NCK alarm with processing stop present).
Signal state 0 or
edge change 1 → 0
No NCK alarm is active for this channel.
Corresponding to ....
DB21, ... DBX36.6 (NCK alarm with processing stop present)
DB10 DBX109.0 (NCK alarm pending)
Additional references /DA/ Diagnostics Guide
DB21, ...
DBX36.7
NCK alarm with processing stop present
Edge evaluation: No
Signal(s) updated: Cyclically
Signal state 1 or
edge change 0 → 1
At least one NCK alarm - which is causing a processing stop of the part program running in this
channel - is active.
Signal state 0 or
edge change 1 → 0
There is no alarm active in this channel that is causing a processing stop.
Application
example(s)
With this alarm a program interruption because of an NCK alarm can be recognized immediately by
the PLC user program and the necessary steps introduced.
Corresponding to ....
DB21, ... DBX36.6 (channelspecific NCK alarm pending)
Additional references /DA/ Diagnostics Guide
DB21, ...
DBX6.2
Delete distancetogo (channelspecific)