This table lists the ASCII control characters by their standard abbreviations. You may embed these abbreviations (within <> brackets) in a string to be sent by the SER_SEND instruction and the correct ASCII code will be automatically substituted. For example, SER_SEND("Text<CR>") would send the word Text followed by a carriage return, ASCII 13.
| Name | Ctrl- | ASCII | Name | Ctrl- | ASCII |
| NUL | @ | 0 | DLE | P | 16 |
| SOH | A | 1 | DC1 | Q | 17 |
| STX | B | 2 | DC2 | R | 18 |
| ETX | C | 3 | DC3 | S | 19 |
| EOT | D | 4 | DC4 | T | 20 |
| ENQ | E | 5 | NAK | U | 21 |
| ACK | F | 6 | SYN | V | 22 |
| BEL | G | 7 | ETB | W | 23 |
| BS | H | 8 | CAN | X | 24 |
| HT | I | 9 | EM | Y | 25 |
| LF | J | 10 | SUB | Z | 26 |
| VT | K | 11 | ESC | [ | 27 |
| FF | L | 12 | FS | \ | 28 |
| CR | M | 13 | GS | ] | 29 |
| SO | N | 14 | RS | ^ | 30 |
| SI | O | 15 | US | _ | 31 |