Standard Event Register - Keithley 3700 series Reference Manual

Section 8: Status Model

Standard event register

The bits used in the standard event register are described as follows:
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8-16
Bit B0, operation complete: Set bit indicates that all pending selected device
operations are completed and the Series 3700 is ready to accept new commands. The
bit is set in response to an *OPC command. The ICL function opc() can be used in place
of the *OPC command.
Bit B1: Not used.
Bit B2, query error (QYE): Set bit indicates that you attempted to read data from an
empty Output Queue.
Bit B3, device-dependent error (DDE): Set bit indicates that an instrument operation
did not execute properly due to some internal condition.
Bit B4, execution error (EXE): Set bit indicates that the Series 3700 detected an error
while trying to execute a command.
Bit B5, command error (CME): Set bit indicates that a command error has occurred.
Command errors include:
IEEE-488.2 syntax error: Series 3700 received a message that does not follow the
defined syntax of the IEEE-488.2 standard.
Semantic error: Series 3700 received a command that was misspelled or received an
optional IEEE-488.2 command that is not implemented.
Group execute trigger location error: The instrument received a group execute trigger
(GET) inside a program message.
Bit B6, User Request (URQ): Set bit indicates that the LOCAL key on the Series 3700
front panel was pressed.
Bit B7, Power ON (PON): Set bit indicates that the Series 3700 has been turned off and
turned back on since the last time this register has been read.
Series 3700 System Switch/Multimeter Reference Manual
Document Number: 3700S-901-01 Rev. A / August 2007