158
Numeral Setting
Section 4-8
Thumbwheel Type (Direct Connection Only)
When using an NT20 with a direct connection, numerical values are input
directly at the numeral setting input field using touch switches that increment
or decrement each of the digits in the display when pressed. Each time the
displayed numerical value is changed, the new displayed value is written to
the numeral memory table and the host is simultaneously notified.
This means that, when using the Thumbwheel type of numeral setting, all that
is required to input numerical values is to create the numeral setting input field
on the screen.
4-8-3
Creating Numeric Keys
In order to input numerical values using the numeral setting function, apart
from the display area for the numeral setting, the numeric keys must also be
created.
Setting Screen Attributes
The type of numeric keys can be selected using the numeral setting attributes
of the screen attributes. There are two numeral setting attributes: “system”
and “user”.
• Screen When “System” Is Specified
When a numeral setting area is created, numeric keys are automatically
displayed. The display position and arrangement of the numeric keys are
fixed. On this screen, only the types of numeric key shown in the figure be-
low (system keys) are used.
When using the NT20 with the numeral setting attribute set to “system”,
apart from the numeric keys provided by the system, the touch switches
allocated to system keys (
,
,
) also have to be created (system key
function). To enable input of hexadecimal values, it is also necessary to
create numeric keys A through F.
With the NT20, if the numeral setting attribute is set to “system”, apart from
the numeric keys prepared by the system, the touch switches allocated to
system keys (
,
,
) have to be created. (Refer to
4-7-3 System Key
Functions
on page 154.)
• When the Numeral Setting Attribute Is “User”
Write
Notification
1 2 3 4
1 2 3 4
Host
NT20
Pressing the [
−
] key
decrements the digit by one.
Pressing the [+] key
increments the digit by one.
Each time a [+] or [
−
] key is pressed, the input
value is written to the numeral memory table
and the host is simultaneously notified.
Numeral
memory table
Tank A Tank B Tank C
1
2
3
4
5
6
7
8
9
0
CLR
±
Summary of Contents for NT20
Page 1: ...Programmable Terminal Cat No V091 E1 01 NT20 USER S MANUAL ...
Page 2: ...NT series Programmable Terminal User s Manual Produced March 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 15: ...xvi ...
Page 21: ...xxii EC Directives 6 ...
Page 37: ...16 Before Operating Section 1 6 ...
Page 153: ...132 Transferring the Resource Data Section 3 11 ...
Page 185: ...164 Numeral Setting Section 4 8 ...
Page 267: ...246 Key to Programs Section 6 8 ...
Page 281: ...260 Specifications Appendix A ...
Page 285: ...264 Transporting and Storing PTs Appendix C ...
Page 303: ...282 Function Restrictions Depending on the Support Tool Appendix I ...
Page 307: ...286 Index ...
Page 309: ...288 Revision History ...