System information

17-Nov-2014 G2T Programmers Guide Rev-A
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The FLT bit of the SBR tracks the condition of the Fault Queue. The
Fault Queue (see below) is a list of “faults” detected by the
system.
Faults require operator and/or manufacturer intervention.
See below. The FLT bit can be monitored by the host to detect
such conditions. Additionally, its corresponding bit in SRER can be
set and thus cause a service request in the event of a fault.
6.1.5. The Event Status Register (ESR)
The standard Event Status Register (ESR) tracks several events. As
mentioned above, it works in conjunction with the ESER to
determine the value of the SBR’s ESB bit. As set forth in 488.2, when
a condition that is monitored by one of the bits is encountered,
that bit is set and remains set until all the bits are cleared by:
• Reading the ESR with the *ESR? Common command
• The common *CLS command
• The common *RST command
• A processor reset
The ESR consists of the following bits and their weights:
•
Power-on (PON, weight 128)
It is set when the power is turned on.
•
User Request (URQ, weight 64)
It is not used and is always cleared.
•
Command Error (CME, weight 32)
It is set when a syntax error (see below).is encountered in a
command
•
Execution Error (EXE, weight 16)
It is set when an execution error (see below) is
encountered in a command.
•
Device Specific Error (DDE, weight 8)
It is not used and is always cleared.