National Instruments Corporation GPIB-1014P User Manual page 69

Register Descriptions
Table 4-5. Auxiliary Commands: Detailed Description (continues)
Command Code
(COM4-COM0)
4 3 2 1 0
0 0 0 1 1
0 0 1 0 0
0 0 1 0 1
0 1 1 0 1
0 0 1 1 0
GPIB-1014P User Manual
Description
The interface functions are held in their idle states until released by
an Immediate Execute pon command. Between these commands,
the TLC writable bits may be programmed to their desired states.
Finish Handshake (FH)
The Finish Handshake command finishes a GPIB Handshake that
was stopped because of a Holdoff on RFD or DAC.
Trigger
Note: Trigger cannot be used with the GPIB-1014P.
The Trigger command generates a high pulse on the TRIG pin
(T/R3 pin when TRM1=0) of the TLC. The Trigger command
performs the same function as if the DET (Device Trigger) bit
(ISR1[5]r) were set. (The DET bit is not set by issuing the
Trigger command.)
Return to Local (rtl)
Return to Local (rtl)
The two Return to Local commands implement the rtl message as
defined by IEEE-488. When COM3 is zero, the message is
generated in the form of a pulse. When COM3 is one, the rtl
command is set in the standard manner.
Send EOI (SEOI)
The Send EOI command causes the GPIB End Or Identify (EOI)
line to go true with the next byte transmitted. The EOI line is then
cleared upon completion of the Handshake for that byte. The TLC
recognizes the Send EOI command only if TA=1 (that is, the TLC is
addressed as the GPIB Talker).
4-32
Section Four
(continues)
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