11.3 Controlling the Instrument with Commands and Acquiring Data
232
Messages displayed in the communications monitor and their meanings
If an error occurs during command execution, the following information will be displayed:
• Command error (improper command, improper argument format, etc.)
> #CMD ERROR
• Argument out of range
> #PARAM ERROR
• Execution error
> #EXE ERROR
The approximately location of the error will also be shown.
• Argument error (-1 is out of range)
> :RES:RANG -1
> # ^ PARAM ERROR
• Spelling error (for example, using "RENGE" instead of "RANGE")
> :RES:RENGE 100
> # ^ CMD ERROR
• If an illegal character code is received, the character code will be shown in hexadecimal
notation enclosed in angle brackets (< >). For example, the character 0xFF would be dis-
played as <FF>, and 0x00 would be displayed as <00>. If all you see is hexadecimal
characters like this when using the RS-232C interface, check the communications condi-
tions or try using a lower communications speed.
• When using the RS-232C interface
If an RS-232C error occurs, the following information will be displayed:
Overrun error (signal lost)........... #Overrun Error
Break signal received.................. #Break Error
Parity error .................................. #Parity Error
Framing error .............................. #Framing Error
If any of these messages is displayed, check the communications conditions or try using
a lower communications speed.
• The error position may shift, for example when sending a series of consecutive com-
mands.
5
Command and queries will be displayed on the bottom of the Measurement
screen.
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