SECTION 9 " Extended Commands
VT220/ANSI Terminal Emulation Programmer’s Reference Guide 9-27
Column Character Description
1 (Space) This column typically contains a
space.
2 # Extended command.
3 H Set Parameters command.
4--6 099 Backlight stays on for 99 seconds.
7--9 (Spaces) No change from current setting.
10 4 Cursor is in block blink mode.
11 (Space) Reserved.
12 1 A remote display is in use.
13--15 000 Beep is inaudible.
16--18 030 Beeper frequency is 030.
19--21 005 Beeper length is 5 seconds.
22 1 Delete key deletes current character.
23 0 Carriage return.
24 1 Local echo
25--27 (Spaces) No change from current setting.
28--30 080 Screen is 80 columns wide.
31--33 010 Ten rows per screen.
34--36 080 Alternate screen is 80 columns wide.
Return Version (#V)
The Return Version extended command returns the current
firmware name and version to the host computer. Table 9-5
lists columns in which characters must appear.
Table 9-5
Return Version Characters
Line 1, Columns 2--3
Column Character Description
2 # Extended command.
3 V Return Version command.
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