Siemens Sinumerik 840D sl Diagnostic Manual page 346

Overview of Alarms
NCK alarms
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
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 measurement mode
- Invalid probe
- Invalid encoder
- Invalid number of measurement signal 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 mea-
surement 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 the measurement tasks.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
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 touch probe has not yet responded.
Measurement level 2 (MEAWA, MEASA, MEAC)
Measured values cannot be converted to the workpiece coordinate system. The measured values of
the GEO axes programmed in the measurement task are only available in the machine coordinate sys-
tem.
Causes:
Not all GEO axes were programmed in the measurement task. At least one measured value is there-
fore missing for conversion back into the workpiece coordinate system.
Further causes:
The measurement tasks programmed for all GEO axis are not identical.
Reaction: Alarm display.
Remedy: Verify the traversing movement in the measurements block.
- Is it necessary in all cases for the activated probe to have switched up to the specified axis position?
- Are the probe, cable, cable distributor, terminal connections in good order?
Either program all GEO axes explicitly or program the traversing movement with the POS[axis] com-
mand.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
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
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SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009