Omron NV Series Programming Manual page 31

Internal Data Types and Structure
10
■
FROM (built-in Flash Memory)
Stores project data created with the NV-Designer (function data, such as base
screens and NV Configuration).
Project data can be backed up or restored using SD memory cards.
Data
Screen Base screen
data data
Keyboard screen
data
Login screen
data
NV configura-
tion data
Recipe data
Write Address
data
Flow display
data
Passwords
■ SRAM (Internal RAM)
Stores alarm history data collected by the PT, internal memory values, and
clock data.
Data saved in the built-in RAM will be deleted 1 minute after power supply is
turned OFF, but it can be backed up with an optional Battery. (These functions
are not supported by the NV3W.)
Data
Clock data
Alarm history data
PT internal memory
PLC memory hold
area
Screen data containing parts that have been selected
from the parts libraries.
Screen data containing keyboard parts that open when
the corresponding data parts are pressed.
The Screen data is used to enter passwords according to
the password levels specified for operation security. (Not
supported by the NV3W)
Configuration data related to the NV-series PT that
includes the setting information for functions, such as the
system memory, startup screen number, language
switching, and other functions.
Settings to read/write multiple values at one time from or
to PLC memory.
Condition and operation settings for writing data to the
PLC according to the status of a memory location in the
PLC while the specified screen is displayed.
Settings for character flows displayed on the bottom of
the screen and the display conditions.
Settings to restrict displays and operations depending on
the part and user.
(Not supported by the NV3W)
Description
Clock data in PT.
PLC data defined as alarms is constantly monitored and the
time when the alarm occurred and was removed is recorded
as history data.
NV-series PT internal memory.
The specified area can be held while the power supply is OFF.
PLC data that is constantly read from the specified memory
locations and can be held even when the power supply is
turned OFF.
Section 2-1
Description