Operating instructions

Appendix
A.2 System alarms
MP 377, MP 377 PRO (WinCC flexible)
312 Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0
270000 - System alarms
Number Effect/causes Remedy
270000 A tag is not indicated in the alarm because it attempts
to access an invalid address in the PLC.
Check whether the data area for the tag exists in the
PLC, the configured address is correct and the value
range for the tag is correct.
270001 There is a device-specific limit as to how many alarms
may be queued for output (see the operating
instructions). This limit has been exceeded.
The view no longer contains all the alarms.
However, all alarms are written to the alarm buffer.
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270002 The view shows alarms of a log for which there is no
data in the current project.
Wildcards are output for the alarms.
Delete older log data if necessary.
270003 The service cannot be set up because too many
devices want to use this service.
A maximum of four devices may execute this action.
Reduce the number of HMI devices which want to
use the service.
270004 Access to persistent buffer is not possible. Alarms
cannot be restored or saved.
If the problems persist at the next startup, contact
Customer Support (delete Flash).
270005 Persistent buffer damaged: Alarms cannot be
restored.
If the problems persist at the next startup, contact
Customer Support (delete Flash).
270006 Project modified: Alarms cannot be restored from the
persistent buffer.
The project was generated and transferred new to
the HMI device; The error should no longer occur
when the device starts again.
270007 A configuration problem is preventing the restore (a
DLL is missing, a directory is unknown, etc.).
Update the operating system and then transfer your
project again to the HMI device.
280000 - DPHMI alarms Connection
Number Effect/causes Remedy
280000 Connection is up because the cause of the
interruption has been eliminated.
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280001 No more data is read or written. Possible causes:
• The cable is defective
• The PLC does not respond, is defective, etc.
• The wrong port is used for the connection
• System overload
Check whether
• The cable is plugged in
• The PLC is OK
• The correct port is used
Restart the system if the system alarm persists.
280002 The connection used requires a function block in the
PLC.
The function block has responded. Communication is
now enabled.
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