Ametek Sorensen SG Series - Page 145

M550129-03 Rev L 8-3
Fault events which
must be enabled by
the Protection
Enable Register
before they are
recorded in the fault
register.
Bit
Hex Value
Description
0
0x01
Constant Voltage Operation
1
0x02
Constant Current Operation
2
0x04
Converter Fault
3
0x08
Overvoltage Protection Fault
4
0x10
Over Temperature Fault
5
0x20
External Shutdown
6
0x40
Foldback Mode Operation
7
0x80
Remote Programming Error
Fault Register (also called the Protection Event Register).
Readable using the STAT:PROT:EVEN? query
command.
The SCPI Status Byte. Read using either the
*STB? command, or the GPIB serial poll operation.
Bit
Hex Value
Description
0
0x01
Operation Complete
1
0x02
Request Control (Not Used)
2
0x04
Query Error (Not Used)
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
Bit
Hex Value
Description
0
0x01
Not Used
1
0x02
Protection Event Flag
2
0x04
Error/Event Queue Message Avail.
3
0x08
Questionable Status (Not Used)
4
0x10
Message Available
5
0x20
Standard Event Status Register
6
0x40
RQS/MSS Service Request Bit
7
0x80
Operation Status Flag (Not Used)
Events which
set the SESR
bits directly.
The SESR (Standard Event Service Register). Masking does not prevent events from
setting bits in the SESR. This facilitates polling as a means of detecting these events,
since the SESR can be polled (read) using the *ESR? command, irrespective of the bits
set or not set in the Standard Event Status Enable Register.
The SESER (Standard Event Status Enable Register). This register is read
using the *ESE? SCPI query command. This register is written to using the
*ESE <value> command. A “1” in the appropriate bit location enables that
corresponding bit from the SESR to pass through to the input of the OR gate
to be included in the SESR summary bit (bit 5) in the SCPI Status Byte.
The Service Request Enable Register (SRER).
Used to enable which Status Byte bits can affect the
service request bit. *SRE? reads. *SRE <value> writes.
Seven bit-wise logical AND
operations
Eight bit-wise logical AND
operations
The Protection Enable Register. Readable using the STAT:PROT:ENAB? query command. Writable using the STAT:PROT:ENAB <value>
command. Used to select what fault events could set a bit in the Fault Register. Certain faults can occur even if they are not enabled. This is
because the Protection Enable Register merely filters which events are allowed to affect the Fault Register, not whether those events can
occur or not. An exception to this rule involves the Constant Voltage Operation, Constant Current Operation, and Foldback Mode Operation
bits. If these bits are not enabled, then mode changes shall not cause a shutdown. Read about these bits further in the manual.
SCPI STATUS IMPLEMENTATION DIAGRAM