IEEE 488 Command Messages
These multiline interface messages are sent and received with ATN asserted.
For more information about these messages, refer to the ANSI/IEEE Standard 488.1-1987, IEEE Standard Digital Interface for Programmable Instrumentation, and ANSI/IEEE Standard 488.1-2003, IEEE Standard for Higher Performance Protocol for the Standard Digital Interface for Programmable Instrumentation.
Multiline Interface Message Definitions
| Hex | Decimal | ASCII | Message |
| 00 | 0 | NUL | |
| 01 | 1 | SOH | GTL |
| 02 | 2 | STX | |
| 03 | 3 | ETX | |
| 04 | 4 | EOT | SDC |
| 05 | 5 | ENQ | PPC |
| 06 | 6 | ACK | |
| 07 | 7 | BEL | |
| 08 | 8 | BS | GET |
| 09 | 9 | HT | TCT |
| 0A | 10 | LF | |
| 0B | 11 | VT | |
| 0C | 12 | FF | |
| 0D | 13 | CR | |
| 0E | 14 | SO | |
| 0F | 15 | SI | |
| 10 | 16 | DLE | |
| 11 | 17 | DC1 | LLO |
| 12 | 18 | DC2 | |
| 13 | 19 | DC3 | |
| 14 | 20 | DC4 | DCL |
| 15 | 21 | NAK | PPU |
| 16 | 22 | SYN | |
| 17 | 23 | ETB | |
| 18 | 24 | CAN | SPE |
| 19 | 25 | EM | SPD |
| 1A | 26 | SUB | |
| 1B | 27 | ESC | |
| 1C | 28 | FS | |
| 1D | 29 | GS | |
| 1E | 30 | RS | |
| 1F | 31 | US | CFE |
| 20 | 32 | SP | MLA0 |
| 21 | 33 | ! | MLA1 |
| 22 | 34 | " | MLA2 |
| 23 | 35 | # | MLA3 |
| 24 | 36 | $ | MLA4 |
| 25 | 37 | % | MLA5 |
| 26 | 38 | & | MLA6 |
| 27 | 39 | ' | MLA7 |
| 28 | 40 | ( | MLA8 |
| 29 | 41 | ) | MLA9 |
| 2A | 42 | * | MLA10 |
| 2B | 43 | + | MLA11 |
| 2C | 44 | , | MLA12 |
| 2D | 45 | - | MLA13 |
| 2E | 46 | . | MLA14 |
| 2F | 47 | / | MLA15 |
| 30 | 48 | 0 | MLA16 |
| 31 | 49 | 1 | MLA17 |
| 32 | 50 | 2 | MLA18 |
| 33 | 51 | 3 | MLA19 |
| 34 | 52 | 4 | MLA20 |
| 35 | 53 | 5 | MLA21 |
| 36 | 54 | 6 | MLA22 |
| 37 | 55 | 7 | MLA23 |
| 38 | 56 | 8 | MLA24 |
| 39 | 57 | 9 | MLA25 |
| 3A | 58 | : | MLA26 |
| 3B | 59 | ; | MLA27 |
| 3C | 60 | < | MLA28 |
| 3D | 61 | = | MLA29 |
| 3E | 62 | > | MLA30 |
| 3F | 63 | ? | UNL |
| 40 | 64 | @ | MTA0 |
| 41 | 65 | A | MTA1 |
| 42 | 66 | B | MTA2 |
| 43 | 67 | C | MTA3 |
| 44 | 68 | D | MTA4 |
| 45 | 69 | E | MTA5 |
| 46 | 70 | F | MTA6 |
| 47 | 71 | G | MTA7 |
| 48 | 72 | H | MTA8 |
| 49 | 73 | I | MTA9 |
| 4A | 74 | J | MTA10 |
| 4B | 75 | K | MTA11 |
| 4C | 76 | L | MTA12 |
| 4D | 77 | M | MTA13 |
| 4E | 78 | N | MTA14 |
| 4F | 79 | O | MTA15 |
| 50 | 80 | P | MTA16 |
| 51 | 81 | Q | MTA17 |
| 52 | 82 | R | MTA18 |
| 53 | 83 | S | MTA19 |
| 54 | 84 | T | MTA20 |
| 55 | 85 | U | MTA21 |
| 56 | 86 | V | MTA22 |
| 57 | 87 | W | MTA23 |
| 58 | 88 | X | MTA24 |
| 59 | 89 | Y | MTA25 |
| 5A | 90 | Z | MTA26 |
| 5B | 91 | [ | MTA27 |
| 5C | 92 | \ | MTA28 |
| 5D | 93 | ] | MTA29 |
| 5E | 94 | ^ | MTA30 |
| 5F | 95 | _ | UNT |
| 60 | 96 | ` | MSA0, PPE |
| 61 | 97 | a | MSA1, PPE, CFG1 |
| 62 | 98 | b | MSA2, PPE, CFG2 |
| 63 | 99 | c | MSA3, PPE, CFG3 |
| 64 | 100 | d | MSA4, PPE, CFG4 |
| 65 | 101 | e | MSA5, PPE, CFG5 |
| 66 | 102 | f | MSA6, PPE, CFG6 |
| 67 | 103 | g | MSA7, PPE, CFG7 |
| 68 | 104 | h | MSA8, PPE, CFG8 |
| 69 | 105 | i | MSA9, PPE, CFG9 |
| 6A | 106 | j | MSA10, PPE, CFG10 |
| 6B | 107 | k | MSA11, PPE, CFG11 |
| 6C | 108 | l | MSA12, PPE, CFG12 |
| 6D | 109 | m | MSA13, PPE, CFG13 |
| 6E | 110 | n | MSA14, PPE, CFG14 |
| 6F | 111 | o | MSA15, PPE, CFG15 |
| 70 | 112 | p | MSA16, PPD |
| 71 | 113 | q | MSA17, PPD |
| 72 | 114 | r | MSA18, PPD |
| 73 | 115 | s | MSA19, PPD |
| 74 | 116 | t | MSA20, PPD |
| 75 | 117 | u | MSA21, PPD |
| 76 | 118 | v | MSA22, PPD |
| 77 | 119 | w | MSA23, PPD |
| 78 | 120 | x | MSA24, PPD |
| 79 | 121 | y | MSA25, PPD |
| 7A | 122 | z | MSA26, PPD |
| 7B | 123 | { | MSA27, PPD |
| 7C | 124 | | | MSA28, PPD |
| 7D | 125 | } | MSA29, PPD |
| 7E | 126 | ~ | MSA30, PPD |
| 7F | 127 | DEL | |