Rohde & Schwarz PR100 - IST Flag and Parallel Poll Enable (PPE) Register; Event Status Register (ESR) and Event Status Enable (ESE) Register

R&S PR100 User Manual
Bit
No.
Meaning
7 OPERation status register summary bit
The bit is set if an EVENt bit is set in the OPERation-status register
and the corresponding ENABle bit is set to 1. A set bit indicates that
the device is just performing an action. The type of action can be
determined by polling the OPERation-status register.
9.2.1.2 IST flag and Parallel Poll Enable (PPE) register
Analogous to the SRQ message, the IST flag combines the entire status
information in a single bit. It can be queried by 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. In contrast to SRE bit 6 is also used here. The
IST flag results from the ORing of all results. The PPE can be set using the
"*PRE" commands and read using the "*PRE?" command.
9.2.1.3 Event Status Register (ESR) and Event Status Enable
(ESE) register
The ESR is already defined in IEEE 488.2. It can be compared with the
EVENt section of an SCPI register. The EVENt status register can be read out
using the "*ESR?" command.
The ESE is the associated ENABle section. It can be set using the "*ESE"
command and read using the "*ESE?" command.
Table 3: Bit allocation of event status register
Bit
No.
Meaning
0 Operation Complete
On receipt of the command *OPC, this bit is set exactly when all
previous commands have been executed.
2 Query Error
This bit is set if 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
denoting the error in greater detail is entered into the error queue
(see Section 9.3).
4 Execution Error
This bit is set if a received command is syntactically correct but cannot
be performed for different reasons. An error message with a number
between -200 and -299 denoting the error in greater detail is entered
into the error queue (see Section 9.3).