Rockwell Automation FactoryTalk View Machine Edition Users Guide - Manual (Page 290)

F ACTORY T ALK V IEW M ACHINE E DITION U SER ’ S G UIDE
17-32
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What is written to the Value connection
When the operator presses the Enter button in the pop-up keyboard or scratchpad, the
string that is sent to the Value connection depends on how the String Input Enable button
is set up.
 If a fill character is set up for the button, and the operator enters fewer than the
maximum number of input characters, the fill characters are placed after the string the
operator enters.
 Spaces have a hex value of 20.
 Zeroes have a hex value of 30.
 FF characters have a hex value of FF.
 Null characters have a hex value of 0. The null character indicates the end of string
input. It does not add to the actual string length.
 If the number of input characters is fewer than the number of characters in the length
of the string tag assigned to the Value connection, the remaining spaces are padded
with the null character.
When the string is written to the Value connection, the first character is placed in the high
order byte of the first word at the tag address, the second character is placed in the low
order byte of the first word, and so on.
Backspace Backspace Delete the character in front of the cursor.
Enter Enter Close the pop-up window and write the string to
the Login dialog box, the Change Password
dialog box, or the String Input Enable button’s
Value connection.
If Enter key handshaking is set up for the String
Input Enable button, the button’s Enter
connection is set to 1 and the handshaking timer
begins timing. For details, see page 21-12.
Use this pop-up
keyboard button Or this keyboard
equivalent
To do this