[Channel %1:]Block %3 Axis %2 Software Limit Switch %4; Block %5 Axis %2 Software Limit Switch %6 Violated - Siemens Sinamics S120 Diagnostic Manual

NCK alarms
Remedy: Check and correct positions in the NC program.
Please inform the authorized personnel/service department.
Check machine data: MD36100 $MA_POS_LIMIT_MINUS / MD36120 $MA_POS_LIMIT_MINUS2 and MD36110
$MA_POS_LIMIT_PLUS / MD36130 $MA_POS_LIMIT_PLUS2 for the software limit switches.
Check the axis-specific interface signals: DB380x DBX1000.3 / .2 (2nd software limit switch plus/minus) to see
whether the 2nd software limit switch is selected.
Check the currently active work offsets via the current frame.
Work offsets, overlaid movements ($AA_OFF), DRF and transformation components must also be checked.
Program Clear alarm with NC START or RESET key and continue the program.
Continuation:
10721 [Channel %1: ] Block %3 axis %2 software limit switch %4
Parameters: %1 = Channel number
%2 = Axis name, spindle number
%3 = Block number, label
%4 = String ( + or - )
Definitions: The motion planned for the axis violates the currently valid software limit switch.
The alarm is activated during the preprocessing of approach or rest blocks for REPOS.
Depending on MD11411 $MN_ENABLE_ALARM_MASK, bit11=0 this alarm is output instead of alarm 10723. If this
MD11411 $MN_ENABLE_ALARM_MASK, bit11 is set in this machine data $MN_ENABLE_ALARM_MASK, an
expanded diagnostics option is offered for the software limit switch violation. The condition for activation is the pres-
ence of the ALUN* alarm file in the HMI. See also the Diagnostics Manual for alarm 10723.
Reaction: Local alarm reaction.
Interface signals are set.
Alarm display.
Remedy: Determine the cause of the offset from the initial or target position. The REPOS command is executed at the end of
an ASUB or system ASUB. See also cross reference from ASUBs.
Check the axis-specific NC/PLC interface signals DB380x DBX1000.3 / .2 (2nd software limit switch plus/minus) to
see whether the 2nd software limit switch is selected.
Check the currently active work offset via the current frame.
Also check the external work offsets, overlaid movements ($AA_OFF), DRF and transformation components.
Cancel the NC program with NC reset.
Program Clear alarm with the RESET key. Restart part program
Continuation:
10722 [Channel %1: ] Block %5 axis %2 software limit switch %6 violated, residual distance:
%7 %3<ALUN> violated
Parameters: %1 = Channel number
%2 = Axis name, spindle number
%3 = Unit of distance
%4 = Block number, label|number+string(+/-)|residual distance
Definitions: The path programmed for the axis violates the currently valid software limit switch. The alarm is activated when pre-
paring the part program block.
This alarm is issued instead of alarm 10720 if bit 11=1 in the MD11411 $MN_ENABLE_ALARM_MASK. Alarm 10722
offers an expanded diagnostics option for the software limit switch violation. The condition for activation is the pres-
ence of the ALUN* alarm file in the HMI.
See also diagnostics guide for alarm 10720.
Reaction: Correction block is reorganized.
Local alarm reaction.
Interface signals are set.
Alarm display.
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Diagnostics Manual, 07/2010, 6FC5398-8BP40-0BA0
Alarms