NCR NCR7454 manual Set Low Power State On, Enable Cursor, Disable Cursor

6-10 Chapter 6: NCR 7454 4x20 Customer Display

	Set Low Power State On
Format:	1B 06
Description:	This state is used to reduce Retail VFD power consumption and extend
	the life of the Retail VFD. Power is only removed from the VFD and the
	display will not be refreshed. The Retail VFD controller is still fully
	operational and will continue to accept commands. This command
	causes the firmware to blank or turn off the Retail VFD. Display data
	can be processed while the display is in the Low Power state, but it will
	not appear until the Low Power state is changed. The displayed
	character(s) states is preserved so that upon leaving the Low Power
	State the display is restored. To leave the Low Power State, one of the
	other state commands must be received. This is the default state for the
	Retail VFD after power-up.

	Enable Cursor
Format:	1B 07
Description:	This command causes a flashing cursor to be used whenever the
	Display On state is in force. When the cursor is enabled, the firmware
	will show a visible flashing cursor at the current cursor position. The
	flashing cursor should be visible for one second and then the character
	at the cursor position should be visible for one second. The effect is to
	alternate between the character and the cursor. The cursor is defined as
	character 5FH of whatever character set is currently chosen. For the
	two supported character sets, the cursor is the bottom row of pixels
	turned on. For a user defined character set, the cursor will be whatever
	is defined as character 5FH of the character set. When the cursor is
	enabled, it overwrites the character at the cursor position. If the cursor
	is disabled, the character at the cursor position is left visible.

	Disable Cursor
Format:	1B 08
Description:	This command causes the cursor to be turned off. This is the default
	state for the cursor after power-up. A disabled cursor does not
	overwrite a displayed character.