GW Instek PST series Programming Manual User Manual
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PST & PSS & PSH SERIES PROGRAMMABLE POWER SUPPLY
PROGRAMMER MANUAL
⎯ 45 ⎯
Queues
The output queue is included to power supplies.
Output Queue: The programmable power supplies store query responses
in the output queue by succeeding the IEEE 488.2 protocol. If the power
supply receives a new command or query message after a message
terminator, the power supply will clear and reset this queue each time.
The computer must read a query response before it sends the next
command (or query) or it loses response to earlier queries.
Error/Event Queues
When an error or event occurs, the output queue stores the message. The
output queue stores and reports the messages on a FIFO (first in first out)
state. The SYSTem:ERRor? query reads the next item from the output
queue. If output queue overflows, the error message is –350, “Queue
overflow”
; the queue can’t store or report succeeding messages till it
is read or cleared.
Error Message
Table 8 lists the SCPI error messages for the programmable power
supplies.
Table 8 The error messages for the power supplies
SCPI Error Code and Description
SESR Bit
0, “No error”
-100, “Command error”
5
-200, “Execution Error”
4
-221, “Settings conflict”
4
-221, “Settings conflict; Timer setting error”
4
-221, “Settings conflict; Overvoltage protection setting error”
4
-221, “Settings conflict; Voltage setting error”
4
PST & PSS & PSH SERIES PROGRAMMABLE POWER SUPPLY
PROGRAMMER MANUAL
⎯ 46 ⎯
-221, “Settings conflict; Current setting error”
4
-221, “Settings conflict; Recall setting error”
4
-221, “Settings conflict; Store setting error”
4
-222, “Data out of range”
4
-222, “Data out of range; Voltage too large”
4
-222, “Data out of range; Current too large”
4
-222, “Data out of range; Voltage too small”
4
-222, “Data out of range; Current too small”
4
-240, “Hardware Error”
4
-300, “Device-specific error”
3
-300, “Device-specific error; Overcurrent protection error”
3
-300, “Device-specific error; Overvoltage protection error”
3
-300, “Device-specific error; Overtemperature protection
error”
3
-300, “Device-specific error; Calibration current error”
3
-300, “Device-specific error; Calibration voltage error”
3
-300, “Device-specific error; Calibration overvoltage
protection error”
3
-310, “System error”
3
-313, “Calibration memory lost”
3
-330, “Self-test failed”
3
-330, “Self-test failed; CPU test error”
3
-330, “Self-test failed; RAM test error”
3
-330, “Self-test failed; ROM test error”
3
-330, “Self-test failed; DAC/ADC test error”
3
-350, “Queue overflow”
3
-410, “Query INTERRUPTED”
2
-420, “Query UNTERMINATED”
2
-430, “Query DEADLOCKED”
2