Allen-Bradley A-B QUALITY DL20 Series User Manual page 36

Chapter 4
Creating and Editing Messages
Specifying
Message Attributes
Attribute Defaults
4–10
Historical Event Recording
The Historical Event Recording prompt determines whether to place a
message in the Historical Event Recording Stack for later printing.
If you answer Yes, every time the message is triggered, it is displayed and
sent to a printer or slave as determined by the other message attributes. It is
also placed in the Historical Event Recording Stack to be printed out later.
Any variables or the time and date within the message are also saved. Refer
to Chapter 5 for more information on the function of Historical Event
Recording.
Invisible Messages
Invisible messages do not appear on the display when triggered, nor do they
affect what is displayed. All other message features remain in effect. The
message can still be sent to slaves, printed or saved in the Historical Event
Recording Stack. To use invisible messages, enter Yes to this prompt:
This feature is useful if you only want a certain message to be displayed on a
slave, printed, or put into the Historical Event Recording Stack.
All attributes have default values. The first time you enter a message into a
new DL20, or one which has had its memory cleared, the defaults are shown.
From then on, the defaults used when entering a new message are those last
selected. This feature allows you to quickly enter a number of messages that
have the same or similar attributes. To accept attributes as default, hold
down the [ENTER] key until prompted for the message.
STACK MSG? N
INVISIBLE MSG?