R&S 1129.7246.03, Operating Manual

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Operating Manual 1302.6163.12 - 03 5.23
R&S ESU Remote Control – Basics
Status Reporting System
5.7.3.2 IST Flag and Parallel Poll Enable Register (PPE)
By analogy with the SRQ, the IST flag combines the entire status information in a
single bit. It can be queried by means of a parallel poll (cf. section
“Parallel Poll” on
page 5.31 ) or using command "*IST?".
The parallel poll enable register (PPE) determines which bits of the STB contribute
to the IST flag. The bits of the STB are ANDed with the corresponding bits of the
PPE, with bit 6 being used as well in contrast to the SRE. The Ist flag results from
the ORing of all results. The PPE can be set using commands "*PRE" and read
using command "*PRE?".
5.7.3.3 Event-Status Register (ESR) and Event-Status-Enable Register (ESE)
The ESR is already defined in IEEE 488.2. It can be compared with the EVENt part
of an SCPI register. The event status register can be read out using command
"*ESR?".
The ESE is the associated ENABle part. It can be set using command "*ESE" and
read using command "*ESE?".
Bit
No. Meaning
0 Operation Complete
This bit is set on receipt of the command *OPC exactly when all previous commands have
been executed.
1 This bit is not used
2 Query Error
This bit is set if either the controller wants to read data from the instrument without having
send a query, or if it does not fetch requested data and sends new instructions to the
instrument instead. The cause is often a query which is faulty and hence cannot be executed.
3 Device-dependent Error
This bit is set if a device-dependent error occurs. An error message with a number between
-300 and -399 or a positive error number, which denotes the error in greater detail, is entered
into the error queue (cf. chapter
“Error Messages” ).
4 Execution Error
This bit is set if a received command is syntactically correct, however, cannot be performed
for other reasons. An error message with a number between -200 and -300, which denotes
the error in greater detail, is entered into the error queue (cf. chapter
“Error Messages” ).
5 Command Error
This bit is set if a command which is undefined or syntactically incorrect is received. An error
message with a number between -100 and -200, which denotes the error in greater detail, is
entered into the error queue (cf. chapter
“Error Messages” ).
6 User Request
This bit is set on pressing the LOCAL key.
7 Power On (supply voltage on)
This bit is set on switching on the instrument.