Omron NT31C Reference Manual page 342

Input of Numeric Values and Character Strings
Inputting Numeric Values Using a Thumbwheel Type Input Field
Setting
Reference: Since a thumbwheel type numeral setting field itself has a touch switch for input-
Operation
1, 2, 3...
Reference:
The following describes the procedure for inputting or changing a numeric value
in a thumbwheel type input field.
– – – –
1 2 3 4
+ + + +
When creating a screen using the Support Tool, register the following element
for the screen.
Thumbwheel switch
ting a numeric value, it is not necessary to register other elements for inputting a
numeric value.
1. Display the screen which has the thumbwheel switch.
2. Change the numeric value using the increment/decrement (+, –) keys pro-
vided at the top and bottom of each digit position of the thumbwheel switch.
For the procedure for changing a numeric value, refer to Using A Thumb-
wheel Type Input Field (page 331).
S In a thumbwheel switch, a numeric value is confirmed immediately after it is
changed and written to a numeral setting field. At the same time, the occur-
rence of a change in the contents of the numeral setting memory table is noti-
fied to the host.
When the numeric input is confirmed, the PT checks whether the input is within
the upper and lower (max./min.) limits set for that numeral setting input field. If
the numeric value is outside the specified range, the buzzer sounds three
times, the input numeric value is canceled, and the screen returns to the dis-
play before starting the input. In this case, neither writing to a numeral memory
table nor notification to the host is executed.
S When a thumbwheel switch is displayed, the numeric value which has been
stored in the numeral memory table prior to the input is displayed.
S Even if more than one thumbwheel switch exists on a screen, it is not neces-
sary to specify an active thumbwheel switch since the inputs are made with the
increment and decrement keys contained in each switch.
S When NT30/620 compatible mode is being used, the current screen number
occupies the first word of the PT status notify area and the words containing the
updated memory table number and PT status notify bits are shifted down one
word (page 441).
Using a Thumbwheel Type Input Field
At a thumbwheel switch, input a numeric value using the increment/decrement
(+, –) keys provided at each digit position of the thumbwheel type numeral set-
ting field.
Specifying a Numeric Value
When an increment/decrement (+, –) key is pressed, the numeric value at the
corresponding digit increases or decreases by 1. Each time the + key or the –
key is pressed, the changed numeric value is stored to the numeral memory
table and the occurrence of a change in the contents of the numeral memory
Decrease by 1 when key is touched
–
Increase by 1 when key is touched
+
Section 3-7
331