Intermec CV30 Intermec Terminal Emulator (ITE) Programmer's Reference Manual - Page 76

Chapter 2 - About VT/ANSI Programming • Clear UDK memory space before loading new definitions. Use a DECUDK string to clear keys without locking them. Then you can use another DECUDK string to redefine the keys and lock them. • If you redefine a key, the old definition is lost. This may clear some space if the new definition uses fewer bytes than the old one. • There are two ways to lock UDKs, but only one way to unlock them. To lock UDKs, you can use either the computer's firmware menus or a DECUDK control string. To unlock UDKs, you must use the computer's firmware menus. • The default value for each key definition is empty. When you clear UDKs, they are empty. • An invalid hex pair in a DECUDK string is ignored. Examples of Device Control Strings This sequence clears UDKs: DCS 0 ; 1 | ST This sequence locks UDKs: DCS 1 ; 0 | ST Suppose you want to define F20 to be PRINT without clearing or locking any other keys and you are using 8-bit mode. The first part of the sequence would look like this: É1;1|34/ where 34 is the code for F20 and "É" is the ASCII character for 90 hexadecimal. After the slash character "/" (2F hexadecimal) you would include the definition. The rest of the sequence after the slash character would be, 5052494E54£ where the hex encoding for PRINT is: 50 = P 52 = R 49 = I 4E = N 54 = T The ST ASCII character "£" (9C hexadecimal) marks the end of the control string. The complete string is: É1;1|34/5052494E54£ Down-Line Loadable Character Set The computer does not support the ability to create and down-line load a character set of up to 94 characters. This character set is also called a dynamically redefinable character set (DRCS). DRCS Function Down-line load DRCS characters Clear a down-line loaded character set Action Ignored Ignored 64 Intermec Terminal Emulator (ITE) Programmer's Reference Manual