Model 6220/6221 Reference Manual Status Structure 11-11
Return to Section 11 topics
Standard event status
The used bits of the standard event register (Figure 11-4) are described as
follows:
• Bit B0, Operation Complete (OPC) — Set bit indicates that all pending
selected device operations are completed and the Model 622x is ready to
accept new commands. This bit only sets in response to the *OPC? query
command. See Section 12 for details on *OPC and *OPC?.
Error/status code: +101
• Bit B2, Query Error (QYE) — Set bit indicates that an attempt was made
to read data from an empty output queue.
Error/status codes: -430, -420, -410
• Bit B3, Device-Specific Error (DSE) — Set bit indicates that an instrument
operation did not execute properly due to some internal condition.
Error/status codes: -363, -350, -314, +500 through +558, +700, +900
• Bit B4, Execution Error (EXE) — Set bit indicates that the Model 622x
detected an error while trying to execute a command.
Error/status codes: -260 through -220, +401 through +420
• Bit B5, Command Error (CME) — Set bit indicates that a command error
has occurred.
Command errors include:
— IEEE-488.2 syntax error — The Model 622x received a message that does
not follow the defined syntax of the IEEE-488.2 standard.
— Semantic error — The Model 622x received a command that was mis-
spelled or received an optional IEEE-488.2 command that is not imple-
mented.
— The instrument received a Group Execute Trigger (GET) inside a program
message.
Error/status codes: -171 through -100
• Bit B6, User Request (URQ) — Set bit indicates that the LOCAL key on
the Model 622x front panel was pressed.
• Bit B7, Power ON (PON) — Set bit indicates that Model 622x has been
turned off and turned back on since the last time this register has been
read.
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