Siemens Sinumerik 840D sl Diagnostic Manual page 276

Overview of Alarms
NCK alarms
16919 [Channel %1: ] Action %2<ALNX> is not allowed due to a pending alarm
Parameters: %1 = Channel number
%2 = Action number/action name
Definitions: This action cannot be performed due to an alarm, or the channel is in the fault condition.
Reaction: Alarm display.
Remedy: Press the RESET key.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
16920 [Channel %1: ] Action %2<ALNX> is already active
Parameters: %1 = Channel number
%2 = Action number/action name
Definitions: An identical action is still being processed.
Reaction: Alarm display.
Remedy: Wait until the previous procedure has been terminated and then repeat the operation.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
16921 [Mode group %2: ] [Channel %1: ] Machine data: channel/mode group
assignment not allowed or assigned twice
Parameters: %1 = Channel number
%2 = Mode group number
Definitions: On powering up, an illegal channel/mode group assignment was detected.
Reaction: Mode group not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Please inform the authorized personnel/service department. Check MD10010
$MN_ASSIGN_CHAN_TO_MODE_GROUP.
Program Con- Clear alarm with the RESET key in all channels of this mode group. Restart part program.
tinuation:
16922 [Channel %1: ] Subprograms: action %2<ALNX> maximum nesting depth
exceeded
Parameters: %1 = Channel number
%2 = Action number/action name
Definitions: Various actions can cause the current procedure to be interrupted. Depending on the action, asyn-
chronous subroutines are activated. These asynchronous subroutines can be interrupted in the same
manner as user programs. Unlimited nesting depth is not possible for asynchronous subroutines due
to memory limitations.
Example: An interrupt interrupts the current program processing. Other interrupts with higher priorities
interrupt processing of the previously activated asynchronous subroutines.
Possible actions are: DryRunOn/Off, DecodeSingleBlockOn, delete distance-to-go, interrupts .....
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Do not trigger the event on this block.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
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SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009