PSC FALCON 315 Guía de usuario Pagina 97

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Screen Formatting Concepts
PowerNet Twin Client User Guide < 8-5 >
Screen Elements
The screen elements are the tools used to reformat the host applications
original screen for the terminal. The following four screen elements are
needed to completely reconstruct the host applications screen.
Screen Identification Tag
A Screen Identification Tag must be assigned to each host application
screen snapshot. This identification tag serves as a link between the host
application screen and the reformatted screen displayed on the terminal.
This identification tag also enables splitting large host application
displays into multiple terminal display pages. For example, if a host
application screen contains more rows of screen elements than can be
properly displayed on a Falcon terminal, it may be divided into multiple
display pages.
Display Text
The Display text element is descriptive (or directive) text that appears
on the terminal display.
Display text is statically defined.
Display Fields
Display fields are used to display information from the host
application server. For example, a
Display field is used to display an
item description that is retrieved after a user enters a part number.
Input Fields
Input fields are the only screen element that accept data entry from the
user.
Input fields also can be used as Display fields
This is beneficial when the host application server is displaying data that
a user must verify and/or update. For example, an ordered quantity may
be displayed, accepted, and/or changed using an
Input field.
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