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156
Numeral Setting
Section 4-8
4-8
Numeral Setting
The NT20 has a “numeral setting” function to enable numerical values to be
input from the screen. This function inputs numerical values to numeral mem-
ory table entries in response to touch switch operations, displays these
numerical values on the screen, and sends them to the host.
This section outlines the numeral setting function and the method for creating
the ten keys required to set numerical values on the screen, and explains how
to use ten keys during operation.
Numeral setting screens cannot be registered as child screens of continuous
screens. In the case of overlapping screens, only one of the screens can be
set as a numeral setting screen.
For details on the actual methods used to ascertain input numerical values at
the PLC, refer to
5-3-6 Notification of Numbers to the PLC
on page 199, and
Four-digit Number Input Notify
and
Eight-digit Number Input Notify
on
page 225.
Numeral settings are set during screen creation with the Support Tool.
!Caution
Confirm system safety carefully before changing monitor data.
4-8-1
The Numeral Setting Function
The numeral setting function is described below.
Basic Procedure
The procedure for numeral setting is as follows.
1,2,3...
1.
Input the numerical value at the touch panel.
2.
The input numerical value is displayed in the numeral setting area on the
screen.
3.
Confirm the input numerical value; it will be written to the numeral memory
table, and the PLC will be simultaneously notified.
Restrictions on Numerical Value Input and Attribute Setting
Numerical values of up to 8 digits (7 if there is a minus sign) can be input in
either decimal or hexadecimal format.
• Decimal Input
When the display attribute is set for decimal display, values are input in the
decimal format.
• Numerical Value Range
The range for numerical values that can be input differs according to
whether or not there is a sign display.
When there is no sign display:
0 to 99999999 (8 digits)
When there is a sign display:
–9999999 to +99999999
(7 digits for negative numbers,
8 digits for positive numbers)
Input
Write
Notification
1 2 3 4
1 2 3 4
NT20
PLC
Touch switch
Numeral setting
area
Numeral
memory table
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 ...