Siemens SINUMERIK 840D sl Series Diagnostics Manual page 610

Overview of Alarms
Remedy: Expand the alarm list (Enter maximum number in the file mbdde.ini in the section
[Alarms]). Then perform a cold restart for the operator panel.
Reduce the number of alarm texts. Then perform a cold restart for the operator panel.
Make sure that the MMC memory on the hard disk is available after booting, or re-install
the MMC software.
When entering your own alarm texts, check whether the path and file name are entered
correctly in mbdde.ini.
Program Con- Internal
tinuation:
120200
Image preparation suppressed
Definitions: The control is so heavily loaded by the processing of a subroutine, that it cannot keep all
the display values up-to-date.
Reactions: - Alarm display.
Remedy: The alarm disappears automatically as soon as the overload situation has been elimi-
nated.
If this alarm occurrs often, the start-up engineer will have to take appropriate measures
(e.g. reduce IPO clock pulse rate).
Program Con- Internal
tinuation:
120201
Communication failure
Definitions: The operator panel is connected with the NC and PLC via a serial bus.
This alarm occurs when the communication to these components is interrupted.
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).
Reactions: - 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 Con- Internal
tinuation:
120202
Waiting for a connection to the NC/PLC
Definitions: The operator panel is connected with 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).
Reactions: - 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 Con- Internal
tinuation:
120203
Communication has failed.
Definitions: The operator panel is connected to the NC and the PLC via a serial bus.
2-610
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005