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Overview of the GP-IB Interface
1-7
IM 704310-12E
1
Response to Interface Message
Response to a uni-line message
• IFC (Interface Clear)
Clears the talker and listener. Stops output if data is being output.
• REN (Remote Enable)
Switches between remote and local modes.
• IDY (Identify) is not supported.
Responses to a multi-line message (address command)
• GTL (Go To Local)
Switches to local mode.
• SDC (Selected Device Clear)
Clears the program message (command) which is currently being output. Also empties
the output queue (page 4-5).
• GET (Group Execute Trigger)
Same as
*TRG
.
•
COMMunicate:WAIT
will be stopped immediately.
• PPC (Parallel Poll Configure) and TCT (Take Control) are not supported.
Responses to a multi-line message (universal command)
• LLO (Local Lockout)
Invalidates the LOCAL key on the front panel, disabling switching to local mode.
• DCL (Device Clear)
Same as SDC.
• SPE (Serial Poll Enable)
Sets the talker function to serial poll mode for all equipment connected to the
communications bus. The controller polls equipment sequentially.
• SPD (Serial Poll Disable)
Clears serial poll mode as the talker function for all equipment connected to the
communications bus.
• PPU (Parallel Poll Unconfigure) is not supported.
1.5 Responses to Interface Messages