Epson TM-L90 Developer's Manual page 79

Confidential
Command Name
GS ! Select character size
GS $ Set absolute vertical print position in page mode
GS ( A Execute test print
GS ( C Edit user NV memory
Function 0: Deletes the specified record.
Function 1: Stores data in the specified record.
Function 2: Sends the data in the specified record
Function 3: Sends the number of bytes of memory used.
Function 4: Sends the number of bytes of remaining memory (unused area).
Function 5: Transmits the key code list identifying the stored data.
Function 6: Deletes all data in the NV user memory.
GS ( D Enable/disable real-time commands
GS ( E User setup commands
Function 1: Enables user selection mode.
Function 2: Terminates user selection mode (by software reset).
Function 3: Selects memory switch values.
Function 4: Sends memory switch values.
Function 5: Enters customized values.
Function 6: Sends customized values.
Function 7: Copies user-defined page.
Function 8: Defines data to character code pages in work area using column format.
Function 9: Defines data to character code pages in work area using raster format.
Function 10: Deletes the data from character code pages in work area.
Function 11: Selects transmission settings for serial interface.
Function 12: Sends transmission settings for serial interface.
Function 48: Clear all set values of the paper layout.
Function 49: Sets the paper layout.
Function 50: Transmits the paper layout information.
GS ( K Select printing control method
Function 48: Specifies the print control mode.
Function 49: Specifies the print density.
Function 50: Specifies the print speed.
Function 97: Specifies the number of parts for energizing the head.
GS ( L Set graphics data
Function 48: Transmits the NV graphics memory capacity.
Function 50: Prints the graphics data in the print buffer.
Function 51: Transmits the remaining capacity of the NV graphics memory.
Function 64: Transmits the defined NV graphics key code list.
Function 65: Deletes all NV graphics data.
Function 66: Deletes the specified NV graphics data.
Function 67: Defines the raster graphics data in the non-volatile memory.
Function 69: Prints the specified NV graphics data.
Function 112: Stores the raster graphics data in the print buffer memory.
GS ( M Customize printer control value(s)
Function 1: Copies the settings stored in the active area to the storage area (save settings).
Function 2: Copies the settings stored in the storage area to the active area (load settings).
Function 3: Enables or disables automatic loading of the settings upon initialization.
GS ( N Select character style(s)
Function 48: Selects character color.
4-12 Application Development Information Rev. A