Register Programming; Status Programming Examples; Output Queue; Scpi Error Messages - Agilent Technologies 6023A Operating Manual

Status Programming Examples

SRE 255
Enables all bits to generate seruice requests
SRE 239
Excludes the MAV bit from gerlerating a service request
SRE 8
Enables only Questionable events to generate service requests

Output Queue

The Output Queue is a FIFO (first-in, first-out) data structure that stores power supply-to-controller messages until the
controller reads them.
Whenever the queue holds one or more bytes, it sets the MAV bit (4) in the Status Byte register. The Output Queue is
cleared by *CLS and at power turn on.

SCPI ERROR MESSAGES

Error messages are obtained remotely with the SYST:ERR? query. The error number is the value that is placed in the error
queue. SYST:ERR? returns the error number into a variable and combines the error number and the error message into a
string. There are two types of error messages stored in the power supply error queue, system errors and device-dependent
errors.

System Errors

Table C-5 lists the system errors, which are associated with SCPI syntax errors and interface problems. Information inside
the brackets is not part of the standard error message, but is included for clarification. When system errors occur, the
Standard Event Status register (see "Status Reporting"') records them as follows:
Bit Set
5
4
3
2
Device-Dependent Errors
Hardware Errors During Turn-On Selftest.
able to communicate with the controller. If possible, error - 330 (Self Test Error) is placed in the error queue. If a power
supply output error occurs during selftest, error -330 and error -240 (Hardware Error) are placed in the queue. In addition,
the error appears on the display (see the Operating manual). If output errors occur, the power supply will generate one or
more - 240 errors for each command it cannot process. Use the SYST:ERR? query to read the error queue after power on to
ensure that no - 330 or - 240 errors are present. Any power supply value returned by a query (such as MEAS:CURR?)
should be assumed to be invalid.
Standard Event Status Register Error Bits
|Error Code
-100 thru -199
- 200 thru - 299
- 300 thru - 399
- 400 thru - 499
If a GP-IB failure occurs during selftest, the power supply may or may not be
Standard Commands for Programmable Instruments (SCPI)
Error Type
Command
Execution
Device-dependent
Query
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