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

Error String [Description/Explanation/Examples]

Number

 

 

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

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