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Common scpi commands – AMETEK ReFlex Programming Manual User Manual

Page 129

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Fixed Power DC Remote Programming

ReFlex Power™ Programming Manual

M380056-03 Rev L

125

6.3.2

E

RROR

/E

VENT

Q

UEUE

The Error/Event Queue is a FIFO (First-In-First-Out) buffer for storing detected
errors. When the queue is read with the

SYSTem:ERRor?

query, the error that

was detected first will be read first, and the error that was detected last will be
read last. When all errors are read, the message “0, No error” will be returned.
Up to 10 errors can be stored before overflow would occur. Overflow will result in
error code -350, “Queue overflow” overwriting the last entry. All subsequent
errors are ignored, until the queue is read or cleared and space is again
available.

6.4

COMMON SCPI COMMANDS

The following commands are common to all SCPI instruments, and are
mandatory for conformance to IEEE 488.2. In the following table, the ReFlex
Power™ Fixed Power (FP) will be defined as the “device” on the bus.

Command

Description

*CLS

Clears all status reporting data structures including the Status Byte, the Standard Event
Status Register, the Protection Event Status Register, and the Error Queue. Enable
registers are not cleared by this command. NOTE: The Enhanced command: *CLS is
not supported by the FP.

*IDN?

Identification Query: Returns the device identity as an ASCII string:
,,,< firmware version>.
Example: ELGAR,RFP-F1000-001-0000,0921A00746,3.000.007

*OPC?

Operation Complete Query: Returns the integer value “1” when all pending operations are
complete.

*RST

Reset Command: Resets the device to the following state:
1. Output disabled, relays open.
2. Clears all status reporting data structures, including the Status Byte Register, Standard
Event Status Register, and Error/Event Queue. Enable-masks are not cleared.

*TST

Initiate self test

*TST?

Returns a decimal result from the last self test the module performed. Convert the value to
Hex because more than one bit can be set at a time.