A-2 Return to Section Topics 6482-901-01 Rev. A / August 2012
Appendix A: Status and Error Messages Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual
Introduction
This appendix contains a summary of status and error messages, which status register bits are set
when messages occur, and methods to avoid or eliminate most common SCPI errors.
Status and error messages
Table A-1 summarizes status and error messages, which are stored in the Error Queue. Each
message is preceded by a code number. Negative (-) numbers are used for SCPI-defined
messages, and positive (+) numbers are used for Keithley-defined messages. Note that error and
status conditions will also set specific bits in various status registers, as summarized in Table A-1.
Section 13 has detailed information on registers and queues. To summarize, you can use the
following queries to obtain error and status information:
• :SYST:ERR? — Reads Error Queue.
• *ESR? — Reads Standard Event Status Register.
• :STAT:OPER? — Reads Operation Event Register.
• :STAT:MEAS? — Reads Measurement Event Register.
• :STAT:QUES? — Reads Questionable Event Register.
NOTE SCPI-confirmed messages are described in volume 2: Command Reference of the
Standard Commands for Programmable Instruments. Refer to the :SYSTem:ERRor?
command.
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