Remote Control
R&S
®
ESRP
551
User Manual 1175.7445.02 ─ 08
Event Status Register (ESR) and Event Status Enable Register (ESE)
The Event Status Register (ESR) is the source for the registers on the highest levels
and is similar to the
EVENt
part of a SCPI register. It is defined by IEEE 488.2. You can
.
The corresponding
ENABle
part of the ESR is the Event Status Enable mask register
(ESE). The ESE is directly linked to the ESR. You can control the ESE with
Table 11-7: Meaning of the bits used in the event status register
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
Unused
2
Query Error
This bit is set if either the controller wants to read data from the instrument without having sent 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.
The R&S
ESRP adds a number to the error queue. The number is either in the range between
-300 and -399 or greater than 0. If the number is positive, it indicates the error type in greater
detail.
4
Execution Error
This bit is set if a received command is syntactically correct but 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.
5
Command Error
This bit is set if a remote command is undefined or has a incorrect syntax.
The R&S
ESRP adds a number to the error queue. The number is in the range between -100
and -200 and indicates the error type in greater detail.
6
User Request
This bit is set when you press the "Local" softkey.
7
Power On (supply voltage on)
This bit is set when you turn on the instrument.
STATus:OPERation Register
The STATus:OPERation register contains information about actions the R&S
ESRP is
currently executing. It also contains information about the actions the R&S
ESRP has
executed since the last reading.
You can read out the state of the register with
.
Remote Control - Basics
