14-12 Status Structure Models 2500 and 2502 User’s Manual
• Bit B0, Operation Complete — Set bit indicates that all pending selected device oper-
ations are completed and the Model 2500 is ready to accept new commands. This bit
only sets in response to the *OPC? query command. See Section 15 for details on
*OPC and *OPC?.
• 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 oper-
ation did not execute properly due to some internal condition.
• Bit B4, Execution Error (EXE) — Set bit indicates that the Model 2500 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 — Model 2500 received a message that does not follow
the defined syntax of the IEEE-488.2 standard.
• Semantic error — Model 2500 received a command that was misspelled or
received an optional IEEE-488.2 command that is not implemented.
• 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
Model 2500 front panel was pressed.
• Bit B7, Power ON (PON) — Set bit indicates that the Model 2500 has been turned off
and turned back on since the last time this register has been read.
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