![background image](http://html.mh-extra.com/html/omron/nt15s/nt15s_operation-manual_744537092.webp)
78
Standard Mode
Section 4-6
4.6.1.1.4
‘BCD-Number’ Variable Type
The BCD format is partially used to represent numbers in the PLC. This output is
required in special cases. The positional significance of the displayed digits in-
creases from right to left. The numbers 0 to 9 are used for the representation;
leading zeros can be included optionally. The BCD mode of representation is suit-
able for the data types Byte, Word and Lword. The length is limited to a maximum of
8 digits. There are no blanks between the characters. The variable value is stored
in the controller in BCD format. The range of numbers for a byte is 00 to 99.
10
4
10
3
10
2
10
1
10
0
Positional significance
0
1
2
3
4
Display (1234
D
)
4.6.1.2
‘Alphanumerical’ Representation
In the alphanumerical mode of representation, ASCII strings are read from the
controller in byte format and are represented on the display. The number of charac-
ters which can be displayed depends on the capabilities of the type of terminal
involved. One display line is the maximum permissible length for a variable; longer
texts are truncated. The address in the variable list indicates the beginning of the
character string. A definition of the variable size is not included and is not neces-
sary. The alphanumerical representation provides another means of editing mask
texts during runtime.
4.6.1.3
‘Selection Text’ Representation
In the Selection Text mode of representation, a text string is assigned to a numer-
ical value.
This allows two different tasks to be performed:
1. visualization or selection of statuses by means of text strings
2. change of mask.
An example of using a one-line selection text is the option of selecting the parity for
a serial interface.
In this case, the text list will contain three entries:
Value
Text
0
No Parity
1
Odd
2
Even
A variable (ComParityA / ComParityB) is created in the mask.
Only these three options are selectable on the operating terminal by means of the
Standard or Mix-Mode Editor; invalid inputs are therefore prevented.
Содержание NT15S
Страница 1: ...Cat No V056 E1 1 Programmable Terminal NT4S NT15S NT18S OPERATION MANUAL ...
Страница 2: ...ii ...
Страница 3: ...iii NT4S NT15S NT18S Programmable Terminal Operation Manual Produced March 1999 ...
Страница 4: ...iv ...
Страница 6: ...vi ...
Страница 14: ...xiv ...
Страница 26: ...12 The Terminals of the NT Series Section 1 2 1 2 4 1 2 NT4S SF122B E 1 2 4 1 3 NT4S SF123B E ...
Страница 27: ...13 The Terminals of the NT Series Section 1 2 1 2 4 1 4 NT15S SF121B E 1 2 4 1 5 NT18S SF121B E ...
Страница 37: ...23 The Terminals of the NT Series Section 1 4 1 4 1 3 NT4S SF123B E 1 4 1 4 NT15S SF121B E ...
Страница 54: ...40 The Terminals of the NT Series Section 1 7 1 7 6 3 ASCII Character Set Table ...
Страница 58: ......
Страница 60: ...46 ...
Страница 70: ...56 ...
Страница 200: ...186 ...
Страница 212: ...198 ...
Страница 214: ...200 ...
Страница 232: ...Authorized Distributor Cat No V056 E1 1 Note Specifications subject to change without notice Printed in the Netherlands ...