Multiline Interface Messages are commands that IEEE 488 defines. Multiline interface messages manage GPIB by performing tasks such as initializing the bus, addressing and unaddressing devices, and setting device modes for local or remote programming. These multiline interface messages are sent and received with ATN TRUE.
The GPIB Multiline Interface Messages can return the following message codes.
| Mnemonic | Definition |
|---|---|
| DCL | Device Clear |
| GET | Group Execute Trigger |
| GTL | Go To Local |
| LLO | Local Lockout |
| MLA | My Listen Address |
| MSA | My Secondary Address |
| MTA | My Talk Address |
| PPC | Parallel Poll Configure |
| PPD | Parallel Poll Disable |
| PPE | Parallel Poll Enable |
| PPU | Parallel Poll Unconfigure |
| SDC | Selected Device Clear |
| SPD | Serial Poll Disable |
| SPE | Serial Poll Enable |
| TCT | Take Control |
| UNL | Unlisten |
| UNT | Untalk |
Refer to the ANSI/IEEE Standard 488.1-1987, IEEE Standard Digital Interface for Programmable Instrumentation, for more information about these messages.
Refer to ASCII Codes for a list of ASCII codes.