65
C
Error Messages
Error Number List
This appendix gives the error numbers and descriptions that are returned by the dc source. Error
numbers are returned in two ways:
♦ Error numbers are displayed on the front panel
♦ Error numbers and messages are read back with the SYSTem:ERRor? query. SYSTem:ERRor?
returns the error number into a variable and returns two parameters: an NR1 and a string.
The following table lists the errors that are associated with SCPI syntax errors and interface problems. It
also lists the device dependent errors. Information inside the brackets is not part of the standard error
message, but is included for clarification.
When errors occur, the Standard Event Status register records them in bit 2, 3, 4, or 5 as described in the
following table:
Table C-1. Error Numbers
Error
Number
Error String [Description/Explanation/Examples]
Command Errors –100 through –199 (sets Standard Event Status Register bit #5)
–100 Command error [generic]
–101 Invalid character
–102 Syntax error [unrecognized command or data type]
–103 Invalid separator
–104 Data type error [e.g., "numeric or string expected, got block data"]
–105 GET not allowed
–108 Parameter not allowed [too many parameters]
–109 Missing parameter [too few parameters]
–112 Program mnemonic too long [maximum 12 characters]
–113 Undefined header [operation not allowed for this device]
–121 Invalid character in number [includes "9" in octal data, etc.]
–123 Numeric overflow [exponent too large; exponent magnitude >32 k]
–124 Too many digits [number too long; more than 255 digits received]
–128 Numeric data not allowed
–131 Invalid suffix [unrecognized units, or units not appropriate]
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