AMETEK SFA Series Programming Manual - Manual (Page 14)

IEEE 488.2 and SCPI Command Operation Sorensen SF Series
SCPI STATUS BYTE
Bit Hex Value Description
0 0x01 Not used.
1 0x02 Protection Event Status flag. Indicates the selected protection
event occurred.
2 0x04 Error/event queue message available. Set when any error/event is
entered in the System Error Queue. It is read using the
SYSTem:ERRor? query.
3 0x08 Questionable Status flag. Indicates the quality of the current data
being acquired. This bit is not used.
4 0x10 Message available (MAV). Indicates a message is available in the
GPIB output queue. Cleared after the GPIB output buffer is read.
5 0x20 Standard Event Status Register (ESR). Summary bit for the ESR.
Set when any of the ESR bits are set and cleared when the ESR is
read.
6 0x40 Request Service flag (RQS) for serial polling or Master Summary
Status (MSS) in response to *STB? If service requests are enabled
(with the *SRE command), this bit represents the RQS and will be
sent in response to a serial poll, then cleared. If RQS is not
enabled, the bit represents the MSS bit and indicates the device
has at least one reason to request service. Even though the device
sends the MSS bit in response to a status query (*STB?), it is not
sent in response to a serial poll. It is not considered part of the
IEEE-488.1 Status Byte.
7 0x80 Operation Status flag. Indicates the current operational state of the
unit. This bit is not used.
3.2.2 Standard Event Status Register (ESR)
The Standard Event Status Register (ESR) can be read by the *ESR? command. Reading this
register or issuing a *CLS command will clear the ESR. Use the *ESE (Standard Event Status
Enable Register) to enable corresponding ESR bits to be summarized in the summary bit of the
SCPI Status byte. To configure the DIA to generate GPIB service requests based on the ESR,
both the Standard Event Status Enable Register and the Service Request Enable Register must
be programmed. See table below, and refer to Section 5 for further information.
STANDARD EVENT STATUS REGISTER
Bit Hex Value Description
0 0x01 Operation Complete
1 0x02 Request Control - not used
2 0x04 Query Error
3 0x08 Device Dependent Error
4 0x10 Execution Error (e.g., range error)
5 0x20 Command Error (e.g., syntax error)
6 0x40 User Request - not used
7 0x80 Power On
3-2 M550292-03 (Programming)