Siemens SINUMERIK 828D Function Manual page 267

Alarms with an alarm ID in the 60000 ... 60999 range can be activated in a part program.
Data backup
On POWER ON , the alarm-handler data are reinitialized completely, since they are not stored in the solid state
NC memory.
Configuration of BAG_NOREADY to CHAN_NOREADY (only 840D sl)
For SINUMERIK 840D sl, it is possible to set the channel-specific signal CHAN_NOREADY at the PLC for
alarms. For this purpose, the following machine data must be set:
MD11412 $MN_ALARM_REACTION_CHAN_NOREADY (alarm reaction CHAN_NOREADY permissible)
Value Meaning
0 The CHAN_NOREADY signal is not used (basic setting).
Alarms that have specified a channel­specific NOREADY signal are reconfigured by the
alarm handler to the mode group specific NOREADY signal.
This ensures that earlier PLC software versions remain compatible.
1 The CHAN_NOREADY signal is used.
The alarm handler reconfigures BAG_NOREADY to CHAN_NOREADY.
Clearing criterion
For each alarm, you must specify how the alarm can be cleared again.
The following clearing criteria are possible:
POWERONCLEAR
RESETCLEAR
CANCELCLEAR
NCSTARTCLEAR
CLEARHIMSELF
BAGRESETCLEAR
NCKRESETCLEAR
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
The alarm is cleared by switching the control off and then on again.
When the Reset key is pressed, the alarm is cleared in the channel in
which it occurred.
The alarm is cleared in any channel when the Cancel key is pressed. The
alarm can also be cleared by means of an NC start or Reset.
The alarm is cleared in the channel in which the alarm occurred by starting
a program. The alarm can also be cleared by means of a Reset.
The alarm is not cleared by an operator input or action, but explicitly by a
"clearAlarm" programmed in the NCK source code.
The alarm is cleared by a "BAGRESETCLEAR" command or by executing
a Reset in every channel of this mode group.
The alarm is cleared by an "NCKRESETCLEAR" command or by
executing a Reset in every channel.
D1: Diagnostics tools
5.2 Description of diagnostic tools
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