6-14
TP27, TP37 Equipment Manual
Release 01/00
6.3 Deleting Messages
All message events from event and alarm messages are stored automatically in
the message archive. The message archive can contain as many as 512 message
events. Message events are deleted
S automatically in the case of buffer overflow
S by means of the Edit Message standard screen.
On reaching the configured remaining buffer size, (default setting 10%), an
overflow warning is issued by default. Issue of the the warning can be enabled
or disabled via the Touch Panel using the System Settings standard screen. To
do so, touch the BUFFER OVERFLOW WARNING field and select one of the two
parameters, OFF or ON, from the selection window.
If the message archive is no longer capable of recording more message events,
message events are automatically deleted until the capacity configured for the
remaining buffer size is reached. Deletion occurs in the following sequence:
S The oldest messages which have already been cleared.
The message events Arrived and Cleared for an event message which has
cleared are deleted. The message events Arrived, Cleared and Acknowl-
edged for an alarm message which has cleared are deleted.
S Messages still waiting.
If capacity is still not sufficient for new messages, the oldest waiting mes-
sages are deleted. This triggers the issue of a system message.
In the case of a buffer overflow, a printout of all the alarm and event messages
deleted is automatically triggered if
S “Printout on overflow” is configured,
S message logging is deactivated on the Touch Panel, and
S a printer, ready to operate, is connected.
Purpose
Overflow warning
Deleting on buffer
overflow
Automatic printout
Messages
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