
NCK alarms/ISO alarms
06/2007 Overview of alarms
2-239
" Siemens AG 2007 All Rights Reserved
SINUMERIK 802D sl, Diagnostics Manual, 06/2007Edition
Program Con-
tinuation:
Clear alarm with the RESET key. Restart part program
21701 Channel %1 block %3 axis %2 measurement not possible
Parameters: %1 = channel number
%2 = axis name, spindle number
%3 = block number
Definitions: Measurement level 2 (MEASA, MEAWA, MEAC)
There is an error in the programmed measurement task.
Possible causes:
Invalid measuring mode
Invalid probe
Invalid encoder
Invalid number of measuring edges
Identical measurement signal edges are only programmable in mode 2
Invalid FIFO number
Mismatch between the number of FIFOs programmed and the number of probes used in the measure-
ment task.
Further causes
A measurement task is already active (e.g. from a synchronized action).
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Correct measurement tasks.
Program Con-
tinuation:
Clear alarm with the RESET key. Restart part program
21702 Channel %1 block %3 axis %2 measurement aborted
Parameters: %1 = channel number
%2 = axis name, spindle number
%3 = block number
Definitions: The measurement block has ended (the programmed end position of the axis has been reached) but
the activated probe has not yet responded.
Reaction: Alarm display.
Remedy: Check the traversing movement in the measurement block.
Is it essential for the activated probe to have switched by the time the specified axis position is
reached?
Are probe, cable, cable distributor, terminal connections O.K.?
Either program all GEO axes explicitly or program the traversing movement with the POS[axis] com-
mand.
Program Con-
tinuation:
Clear alarm with the Delete key or NC START.
21703 Channel %1 block %3 axis %2 touch probe not deflected, illegal edge
polarity
Parameters: %1 = channel number
%2 = axis name, spindle number
%3 = block number
Definitions: The selected probe is not (!) deflected and therefore cannot record any measured value from the
deflected to the non-deflected state.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: - Check probe
- Check start position for measurement
- Check program
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