Channel status change NC/PLC states are logged via the information channel status. If this
information can be obtained in a timely manner, in many cases
these states can be used to verify the operation of the machine
control panel.
Window switchover The form and dialog names (assigned by the programmer) are log‐
ged each time a window is opened or closed.
Writing NCK/PLC data The writing of NCK and PLC variables is logged.
File access Copying to the NC is logged.
Function calls in the NCK
(PI service)
Some program calls, for example, ASUB, are logged.
Curr. program status Additional information for particular events is activated. For impor‐
tant alarms that require NC stop, NC start, or NC reset, actual val‐
ues and the current block are recorded for example.
The program ascertains which channel and which spindle are used
for the additional information.
Write interval file Settings for updating files:
● "automatic": The action log saves the information to an internal
buffer. If the buffer is full the entries are written to the CF card.
The entries may be lost when the controller is switched off.
● "after every event": All entries are backed up directly, this
prevents data loss due to a power failure or similar.
Notice: As CF cards only permit a limited number of write
accesses, this setting is not recommended for normal operation.
● "time-controlled": New entries are backed-up for a particular
length of time. An additional input field appears in which you can
specify a time in seconds.
Save log as file for alarm(s)The alarm numbers for which a "crash log" is generated are speci‐
fied. The alarms are entered separated by a comma.
Generating a crashlog file
"actual_crashlog.com" is a backup file of the actual log when a critical event occurs (for
example, Emergency Stop alarm).
The file is then no longer stored in the ring buffer of the action log and can no longer be
overwritten with new entries.
The entries in the crash log file are only overwritten when yet another critical events occurs.
At the beginning, the file has no entries and is only written to after the following events:
● Interface signal DB19.DBX0.6 "Save teleprinter log" changes from 0 to 1.
● The alarm entered in the "Save log as file for alarm(s)" entry field is output.
Interface signal
DB19 (PLC → HMI)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
DBB00 Save ac‐
tion log
Service and diagnostics
18.7 Action log
SINUMERIK Operate (IM9)
440 Commissioning Manual, 12/2017, 6FC5397-1DP40-6BA1
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