National Instruments GPIB-MAC User Manual page 108

November 1985
detected during the read. While the GPIB-MAC is
performing a shadow handshake as a result of the
function, any other function call may return a status word
with the END bit set if the END or EOS message occurred
before or during that call. The END bit is cleared in the
status word at the start of any subsequent programming
message.
4096
SRQI
The SRQI bit specifies whether a device is requesting
service. This bit is set in the status word whenever the SRQ
line is asserted. The bit is cleared whenever the GPIB SRQ
line is unasserted.
The CMPL bit specifies that the operation relating to this
status information is complete. This bit is always set, and is
useful in identifying the status word from other responses.
128
The LOK bit specifies whether the GPIB-MAC is in a
lockout state. The LOK bit is set whenever the GPIB-MAC
detects the Local Lockout (LLO) message has been sent
either by the GPIB-MAC or by another Controller. The
LOK bit is cleared when the Remote Enable @EN) GPIB
line becomes unasserted either by the GPIB-MAC or by
another Controller.
REM 64
The REM bit specifies whether the GPIB-MAC is in remote
state. The REM bit is set whenever the Remote Enable
listen address has been sent either by the GPIB-MAC or by
another Controller. The REM bit is cleared whenever REN
becomes unasserted, or when the GPIB-MAC as a Listener
detects the Go to Local (GTL) command has been sent either
by the GPIB-MAC or by another Controller, or when the
LOC function is called while the LOK bit is cleared in
status.
APPENDIX B - STATUS INFORMATION
98
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