Siemens SINUMERIK 840Di Diagnostic Manual page 678

Overview of Alarms
HMI alarms
120202 Waiting for a connection to the NC/PLC
Definitions: The operator panel is connected to the NC and PLC via a serial bus.
This alarm occurs if the MMC is started for the first time and the NC/PLC ramp-up is not yet finished
or the communication to these components is faulty.
In connection with this alarm, all display values connected with the NC/PLC become invalid.
Such faults are normal while the controls are ramping up (e.g. after resetting).
Reaction: Alarm display.
Remedy: The alarm disappears automatically as soon as the fault situation has ended.
If this alarm is continuously present, a wide variety of faults may be the cause. (e.g. wire breakage,
NC/PLC not ramped up, faulty address/data transfer rate configuration of one of the bus nodes, etc.).
Program Internal
Continuation:
120203 Communication failure
Definitions: The operator panel is connected to the NC and PLC via a serial bus.
This alarm occurs if the MMC is started for the first time and the NC/PLC ramp-up is not yet finished
or the communication to these components is faulty.
In connection with this alarm, all display values connected with the NC/PLC become invalid.
Such faults are normal while the controls are ramping up (e.g. after resetting).
Reaction: Alarm display.
Remedy: The alarm disappears automatically as soon as the fault situation has ended.
If this alarm is continuously present, a wide variety of faults may be the cause. (e.g. wire breakage,
NC/PLC not ramped up, faulty address/data transfer rate configuration of one of the bus nodes, etc.).
Program Internal
Continuation:
120301 Faulty entry for hardkey 'Program' in Keys.ini.
Definitions: The configuration in Keys.ini is wrong.
Reaction: Alarm display.
Remedy: In Keys.ini, the parameter ChildTask:=26 has to be set in the line KEY2.0=.
The alarm can also be acknowledged manually via diagnostics.
Program Internal
Continuation:
120302 The selection is not possible. A program has to have been edited first via
the area 'Program'.
Definitions: A program can only be selected via the hardkey program if a program has already been edited in the
program area.
Reaction: Alarm display.
Remedy: The alarm disappears automatically as soon as a program is edited or simulated in the program area.
The alarm can also be acknowledged manually via diagnostics.
Program Internal
Continuation:
120303 The selection is not possible. The edited file %1 no longer exists.
Parameters: %1 = Program name with path
Definitions: The file edited last in the program area has in the meantime been deleted.
Reaction: Alarm display.
Remedy: The alarm disappears automatically as soon as a program is edited or simulated in the program area.
The alarm can also be acknowledged manually via diagnostics.
Program Internal
Continuation:
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© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006