Keithley 2701

11-12 Status Structure Model 2701 User’s Manual
• Bit B3, Device-Dependent Error (DDE) — Set bit indicates that an instrument
operation did not execute properly. Some of the errors specific to the Model 2701
that will set this bit include the following:
• Error +516: Battery backed RAM error — Data stored in RAM has been lost.
Replace the battery if frequent failures occur.
• Error +517: Cannot resume scan — Due to a card ID change, auto scan has
disabled. The scan will not resume after a power interruption. For details, see
“Scan configuration — Auto scan,” page 7-21.”
• Error +520: Saved setup scancard mismatch — Settings for a user setup or
power-on setup do not match the switching module types presently installed.
For details, see “Defaults and user setups,” page 1-22.
• Error +523: Card hardware error — Communication with the microprocessor
on a switching module card has been lost.
• Error +524: Unsupported card detected — The Model 2701 has detected an
installed Model 77XX switching module that is not supported by the current
version of firmware.
• Bit B4, Execution Error (EXE) — Set bit indicates that the Model 2701 detected
an error while trying to execute a command.
• Bit B5, Command Error (CME) — Set bit indicates that a command error has
occurred:
• IEEE-488.2 syntax error – Instrument received a message that does not follow
the defined syntax of the IEEE-488.2 standard.
• Semantic error – Instrument received a command that was misspelled or
received an optional IEEE-488.2 command that was 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 2701 front panel was pressed.
• Bit B7, Power On (PON) — Set bit indicates that the Model 2701 has been turned
off and turned back on since the last time this register has been read.