Set Screen Save Blank
Format: 1B 09
Description: This command is intended to preserve the life of the display hardware unit. The firmware maintains a five‐minute timer that triggers this feature. The Screen Save feature can be disabled through a command from the host software. When the feature is not disabled, two specific options exist. The Set Screen Save Blank operation causes the display to go blank when the timer expires. When the firmware receives the command code, the Screen Save mode is canceled, and the five‐minute timer is established. Screen Save Blank removes power from the Retail Display, and refreshes the display in the same manner as the Set Low Power On command. At power up, the timer is established at five minutes, and Screen Save Blank is established as a default. The five minute timer is not reset by any invalid or incorrect command.
Set Screen Save Walk
Format: 1B 0A
Description: This command causes the visible display to walk right to left when the Screen Save timer expires (five minutes). The characters on the display appear to walk across the corresponding display row from right to left. The two lines in the 2x20 Display walk in parallel completely off the left side of the display, and then the two lines appear to come back from the right. If the display is space filled, then no effect is perceived even though the walking is taking place. The Screen Save Blank mode is the default mode after power up.