CONTROL CODES
According to the American Standard Code of Information Interchange (ASCII), there are 32 control codes in addition to the codes for the printable characters. (Control codes are sent as data, but the receiving device interprets them as abbreviated ‘’instructions”, communication - status messages, etc.)
The printer recognizes these control codes:
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| Code | |
Function | Abbreviation | Hex |
| Decimal |
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- | NUL | 00 |
| 0 |
- | SOH | 01 |
| 1 |
Reserved | STX | 02 |
| 2 |
Reserved | ETX | 03 |
| 3 |
- | EOT | 04 |
| 4 |
- | ENQ | 05 |
| 5 |
Reserved | ACK | 06 |
| 6 |
- | BEL | 07 |
| 7 |
Back Space | BS | 08 |
| 8 |
- | HT | 09 |
| 9 |
Line Feed | LF | 0A |
| 10 |
- | VT | 0B |
| 11 |
- | FF | 0C |
| 12 |
Carriage Return | CR | 0D |
| 13 |
Double Height | SO | 0E |
| 14 |
Double Width | SI | 0F |
| 15 |
Reset Seq. # to 0000 | DLE | 10 |
| 16 |
Inhibit Line Space | DC1 | 11 |
| 17 |
Dot Graphics | DC2 | 12 |
| 18 |
User Character | DC3 | 13 |
| 19 |
Set Time & Date | DC4 | 14 |
| 20 |
Reserved | NAK | 15 |
| 21 |
Get time and date | SYN | 16 |
| 22 |
- | ETB | 17 |
| 23 |
Stop Reverse Field | CAN | 18 |
| 24 |
Reverse Field | EM | 19 |
| 25 |
Escape | ESC | 1B |
| 27 |
- | FS | 1C |
| 28 |
24 Column Mode | GS | 1D |
| 29 |
32 Column Mode | RS | 1E |
| 30 |
40 Column Mode | US | 1F |
| 31 |
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The printer will ignore all other control codes.
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