User manual
APOS Premium Printer Series User Manual Page 73 /136 Reference: FDE 3107312 Issue A
6.11 Logo commands
S
ELECT THE CURRENT LOGO
Selects a logo to be defined or printed. The active logo n remains in use until this command is sent again
with a different logo n.
When this command precedes a logo definition, that definition is stored in flash or RAM memory as logo n.
If the logo is saved to flash (see command 1D 22 n), and if there is already a different definition in flash
memory for logo n, the first is inactivated and the new definition is used. The inactive definition is not
erased from flash and continues to take up space in flash memory.
When this command precedes a logo print command and n is different from the previously active logo
selected, the printer retrieves the logo definition for n from memory and prints it. If there is no definition
for logo n, then no logo is printed.
In the case of a previously existing application that expects only one possible logo, the printer will not
receive the Select Current Logo (1D 23-n) command. In this case, the printer assigns 0 as the active logo
identifier. It automatically stores any new logo definition in memory as logo 0, inactivating any previous
logo 0 definition. If the flash memory space available for logos fills up with inactive logo 0 definitions, the
firmware erases the old definitions at the next power cycle. This is the only case in which the printer erases
flash memory without an application command.
In the case of a new application using multiple logos, the Select Current Logo (1D 23 n) command is used.
After that, the printer no longer automatically erases the logo definition flash memory page when it fills
with multiple definitions. A new application using multiple logos, writing a user-defined character set into
flash memory, or both, is responsible for erasing the logo and user-defined character set flash memory page
when the logo area is full or before a new character set is defined.
ASCII
GS # n
Hexadecimal 1D 23 n
Decimal
29 35 n
Range of n
0 – 255