Remote Control Basics
R&S
®
SMC100A
196
Operating Manual 1411.4060.32 ─ 04
Fig. 6-1: Graphical overview of the status registers hierarchy
●
STB, SRE
The STatus Byte (
STB
) register and its associated mask register Service Request
Enable (
SRE
) form the highest level of the status reporting system. The
STB
provides
a rough overview of the instrument status, collecting the information of the lower-level
registers.
●
ESR, SCPI registers
The STB receives its information from the following registers:
–
The Event Status Register (
ESR
) with the associated mask register standard
Event Status Enable (
ESE
).
–
The
STATus:OPERation
and
STATus:QUEStionable
registers which are
defined by SCPI and contain detailed information on the instrument.
●
IST, PPE
The
IST
flag ("Individual STatus"), like the
SRQ
, combines the entire instrument status
in a single bit. The
PPE
fulfills the same function for the
IST
flag as the
SRE
for the
service request.
●
Output buffer
The output buffer contains the messages the instrument returns to the controller. It
is not part of the status reporting system but determines the value of the
MAV
bit in
the
STB
and thus is represented in the overview.
Status Reporting System
