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FP Web-Server V2.11
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Entry format User entry Data in PLC register
DT201_16_X 8000 DT201= -32768 (8000 hex)
DT202_16_lx 01E240 DDT202= 123456 (0001E240 hex)
Complete example to enter a 16-bit hex value for DT210:
<form action="/plcpost" method="POST" target="SUBWIN"
onsubmit="opensubwin(200,100);">
Enter DT210 <input SIZE="6" name="DT210_6_X"> in hex</form>
d) Format specification for integer values
With the latest version the '.precision' (range 1...9) format specification for integer
values is also valid for PLC data entry via the HTML submit function. It is now
possible to enter a floating-point value with a decimal point, which is stored as a
16-bit or 32-bit integer in the PLC data register. Examples for entering integers with
a decimal point:
Entry format User entry Data in PLC register
DT201_6_.2d 12.3 DT201= 1230 (04CE hex)
DT201_6_.2i -1 DT201= -100 (FF9C hex)
DT201_6_.1u 12.345 DT201= 123 (007B hex)
DT201_16_.5li 123.4567 DDT201=12345670 (00BC6146 hex)
Further examples:
More PLC data entry examples can be found in "Example2" and "Example13".
7.1.12.2 Notes on Strings
•
The format definition S is used for ASCII strings without "header", i.e. an
ASCII string is generated with the F95 command in the PLC. The length that
was determined in the input field definition is the maximum string length that
can be transferred to the PLC. It can be shortened even further with the
format command
.xS . In this case x stands for the number of characters of
the shortened string length.
- NULL-String : If such a string has the length 0 (zero) the data in the PLC is not
changed.
•
The format definition s is used for ASCII strings with "header", i.e. ASCII
strings that have been generated with the string commands of FPWIN Pro
(from version 3.0 on) in the PLC. The "header" consists of two 16-bit words
before the real ASCII string.
- 1st Word: Maximum string length permitted that can be saved here. Zero disables
writing.
- 2nd Word: Current length of the strings.
- 3rd Word and following: ASCII characters of the string in LO/ HI sequence in the
word.
- Firstly, the entered string will always be shortened to the length that is depicted in