Siemens SINUMERIK 840Di Diagnostic Manual page 313

11/2006
16921 Channel %1 mode group %2 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 machine data
ASSIGN_CHAN_TO_MODE_GROUP.
Program Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Continuation:
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,
asynchronous 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 Clear alarm with the RESET key. Restart part program
Continuation:
16923 Channel %1 program control: action %2<ALNX> not allowed in the
current state
Parameters: %1 = Channel number
%2 = Action number/action name
Definitions: The current processing cannot be stopped, due to an active preprocessing process. This applies to,
for example, loading machine data and block searches until the search object is found.
Reaction: Interface signals are set.
Alarm display.
Remedy: Abort by pressing Reset!
Program Clear alarm with the Delete key or NC START.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
2-313