
B-66284EN/01 2.DEVELOPMENT OF CUSTOM SCREEN
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2.3.18
History Message Indication Control
This control is used to display a summary/history/detail screen of the
contents of a “History Block” resulting from collecting and recording
message display history with the history collection function.
For another use of this control, a function is provided which allows
you to display a summary/detail screen of display request messages
from the PMC without specifying a “History Block”. This is similar to
the text character string indication control. The history message
indication control, however, allows you to display multiple messages
at the same time. It also allows you to scroll through the screen,
display a detail screen, and switch between summary and detail
screens in cooperation with the history display operation button of a
button control.
By specifying the history message indication data acquisition function
for the function specification of a numeral/character string indication
control, you can display various related information on the screen.