Unisys EFP9800 manual NCR 5021 Printer Emulation Commands Close

NCR 5021 Printer Emulation Commands

Close

Takes the printer offline. When the printer is offline, it accepts only the following commands:

•Set Interline Spacing (1B 5B 72)

•Reset (1B 5B 30)

•Read Status (1B 5B 31)

•Open (1B 5B 32)

•Read Tallies (1B 5B 34)

•Write Device Control Memory (1B 5B 7F)

•Reset Character RAM (1B 5B 70)

The printer does not accept printable data when it is offline.

The Close command is ignored if it is received when:

•The printer is processing data.

•Data remains in the print buffer.

•The forms compensation assembly is open.

•A paper jam has occurred.

The Read Status (1B 5B 31) command should be sent by the host after the Close command to verify that the printer is offline. Any data received after the Close command is processed after the printer is offline.

If the Close command is received while the printer is already offline, the Close command is ignored.

The printer is offline when it powers up.

Hexadecimal	Decimal	ASCII
1B 5B 33	27 91 51	ESC [ 3

3255 4073–002 8–5