6-3SectionOperation Modes and the System Menu
105
6-3 Operation Modes and the System Menu
The NT21 operates in four modes: the RUN, Transmit, Maintenance, and Ex-
pansion modes. These modes are selected from the System Menu.
In addition, the NT21 also features the System Installer mode, which is used
specifically for installing the system program.
The
System Installer mode is
selected by operation at the panel when the NT21
power is switched ON.
6-3-1 Relationships among Modes
The
relationships among
the System Menu, each of the operation modes, and
the System Installer mode, are indicated in the figure below.
For
details
on system menu operation, refer to
6-3-3 Operations with the System
Menu (page 108).
[RUN
Mode]
This is the mode in which
the NT21 operates.
In this mode the N21 can
be controlled from the
host, and various display
and I/O operations are
possible.
[T
ransmit Mode]
In this mode, screen
data and other data are
transmitted between the
NT Support T
ool and the
NT21.
When system
settings and screen
data registration have
been completed
To change system
settings or screen
data contents
[Maintenance Mode]
In this mode, NT21
maintenance operations,
such as initialization of
the memory
, checking
settings, and the I/O
check, are executed.
Power ON
SYSTEM MENU
Quit
Transmit Mode
Maintenance Mode
Expansion Mode
If
there is no system
program, or if the
settings for data
control are changed...
[System Installer Mode]
In this mode, the system program of the
NT21 is installed, display of the System
Menu is enabled or disabled, and screen
data changes are enabled and disabled,
among other operations.
[Expansion Mode]
In this mode, the
Programming Console
function can be used, and
the version of system
program can be displayed.
To change system
settings or screen
data contents.
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