User manual

Series 3700 System Switch/Multimeter Reference Manual Section 12: Status Model
3700S-901-01 Rev. C / July 2008 12-19
Standard event register
The bits used in the standard event register are described as follows:
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() (on page 13-220) 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 supported.
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 was read.