Specifications

USING THE TERMINAL KEYS
Data Entry Modes
36 VX 520 REFERENCE GUIDE
Data Entry
Modes
Before you can use the keys on the front panel to enter ASCII characters, the VX
520 terminal must be in a mode that accepts keyed data entry. There are two
terminal operating modes, each enables you to press keys to enter data under
specific circumstances:
• Normal mode: This is the terminal operating mode where an application
program is present in SRAM and currently running.
• Verix Terminal Manager: This is a special, password-controlled terminal
operating mode for performing a variety of test and configuration procedures
that cannot be performed when an application is running.
If you turn on a VX 520 terminal that does not have an application stored in
terminal memory, the system prompt
DOWNLOAD NEEDED appears. You can enter
Verix Terminal Manager by simultaneously pressing F2 and F4, and then entering
the password (Entering Verix Terminal Manager). Once in terminal manager, you
can configure the terminal as required and perform the necessary download.
If you turn on a VX 520 terminal with an application stored in SRAM, the
application executes and the terminal automatically enters normal mode. The
application then controls how terminal keys—including the PF keys and the ATM-
style keys—process transactions and when you can use specific keys to type
characters or respond to prompts.
CAUTION
If you enter Verix Terminal Manager while a terminal application is running in
normal mode, terminal manager preempts the application and takes control of
the display and keyboard. The only way to exit terminal manager is to restart the
terminal. For this reason, once you enter terminal manager, you cannot return to
the application in the same session.
NOTE
Enter Verix Terminal Manager by simultaneously pressing F2 and F4 or the 7 and
enter keys. For simplification in this manual, only F2 and F4 are mentioned from
this point on.
NOTE
If an application is in terminal memory, the default system password into Verix
Terminal Manager may have changed. If so, you must press the F2 and F4 keys
and then enter the required system password to enter terminal manager. The
behavior of key entries depends on the specific active terminal manager menu.