Omron NT21 User Manual

2-12SectionInputting Numeric Values
201
Outline of Operation
The basic operation of a thumbwheel type numeral setting input field is shown
below.
1, 2, 3... 1. The value in the numeral setting input field is changed using the increment-
ing and decrementing (+, –) touch switches.
PT
Press the [–] key to decrement the digit.
Press the [+] key to increment the digit.
– – – –
1 2 3 4
+ + + +
2. Each time a change is made to the numeric value it is confirmed and the oc-
currence of the change is notified to the host via the PT status notify area.
PT
Data writing
Numeral memory table entry
Notification
Host
1 2 3 4
Each time a [+] or [–] key is pressed, the input value is
written to the numeral memory table entry and the
change is notified to the host at the same time.
– – – –
1 2 3 4
+ + + +
Restrictions
• A maximum combined total of 256 of the following elements can be registered
for one screen. (Same for window screens.) Even in the case of an overlapping
screen with eight child screens, it is only possible to register numeral setting
input fields on one of the child screens.
Numeral setting input field (numeric key type),
Character setting input field
• A maximum combined total of 26 of the following elements can be registered
for one screen for the NT21, 64 for the NT31/NT31C, and 256 for the
NT631/NT631C. (Same for window screens.) Even in the case of an overlap-
ping screen with eight child screens, it is only possible to register numeral set-
ting input fields on one of the child screens.
Numeral setting input field (thumbwheel type)
• It is not possible to set input from more than one numeral setting input field (nu-
meric key type or thumbwheel type) on the same screen to one numeral
memory table entry.
In cases where values at the host must be input both in decimal and hexadeci-
mal, set numeral input into separate numeral memory table entries, both allo-
cated in the same area.
• The range of numeric values that can be input depends on the Storage Type
(BCD or Binary) of the numeral memory table entry, and the Display Type
(Decimal or Hexadecimal), and Display Sign settings made for the numeral
setting input field. For details, refer to 2-3-1 Numeral Memory Table (page 72).
• It is not possible to register multiple input fields (regardless of the type of nu-
meric key or thumbwheel) that refer to the same numeral table entry on the
same screen.

Omron NT21 Specifications

General

Brand	Omron
Model	NT21
Category	Touch terminals
Language	English