Visara 1481 - Manual (Page 48)

701408-002 4-3
Operating Procedures
Figure 4-1. Typical Formatted Screen
Unprotected fields are classified as either alphanumeric or numeric. Alphanumeric
fields can accommodate both alphabetic and numeric data characters. Numeric fields
are controlled by the application program so that attempts to enter characters other
than digits 0 through 9, a period, a Dup key, or a minus sign result in an error. On
international keyboards, the comma can be entered instead of the period. Display
stations with Data Entry keyboards automatically shift into Numeric mode when the
cursor enters a numeric field.
Data characters in unprotected fields can also be displayed as intensified (brighter) fields.
In applications requiring use of confidential information, both the protected and unpro-
tected fields can be programmed to be nondisplayed fields.
Note: Use of nondisplayed fields precludes visual verification of entered data before
transmission to the CPU.
Before you can begin entering data characters on the screen, the display station must
access the CPU and its application program. Access is usually accomplished through use
of the Attention, Program Access (PA), Program Function (PF), Clear, or Enter key, or
through a series of sign-on commands and programmed CPU responses. This series is
initiated when the display station comes online. Contact your supervisor or refer to a
system user’s guide for appropriate program-accessing procedures.
Protected Field Cursor
Unprotected Field (Entry)
Alphanumeric Field
Numeric Field
Attribute Character
(not displayed)
ORDER #
NAME
PART #
+
+
+
ABC CO 314
705163–12
+
+
+