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Messages
Overview
Messages on the Touch Panel indicate events and statuses related to control
processes. A message consists of static text, at least. It may also contain tags.
The following types of message are displayed in plain text on the Touch Panel.
Once issued, alarm messages and event messages are stored on the Touch
Panel in battery–backed message buffers, so they are protected against power
failures. Messages in the buffers may be called to the display and logged on the
attached printer. The Touch Panel can still be operated when messages are
waiting to be displayed.
Message states
Alarm and event messages may contain the following information:
A message status is accurately timed by the Touch Panel when it is recorded
and indicated when a message page or buffer is displayed.
TP27, TP37 Equipment Manual
Release 01/00
event messages
alarm messages
system messages
Arrived:
Denotes the occurrence of a message.
Cleared:
The reason for the message no longer exists.
Acknowledged (alarm messages only):
The message has been noted by the operator or the PLC, acknowledged and
confirmed.
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