Ronde & Schwarz 1424.6721K02, Руководство пользователя

Страница: 120 / 148

Remote control basics
R&S
®
NRP18S-xx
120 User Manual 1178.3686.02 ─ 07
1
Device status 2
Questionable status
3
Standard event status
4
Operation status
5
Error queue
Message queue
Status byte
1
0
2
3
MAV
ESB
RQS/MSS
7
Figure 10-1: Status registers overview
1 = Status byte, see Table 10-3
2 = Chapter 10.2.2, "Device status register" , on page 122
3 = Chapter 10.2.3, "Questionable status register" , on page 123
4 = Chapter 10.2.4, "Standard event status and enable register (ESR, ESE)" , on page 126
5 = Chapter 10.2.5, "Operation status register" , on page 127
The highest level is formed by the status byte register (STB) and the associated ser-
vice request enable (SRE) register.
The status byte register (STB) receives its information from:
●
Standard event status register (ESR)
●
Associated standard event status enable register (ESE)
●
SCPI-defined operation status register
●
Questionable status register, which contains detailed information on the device.
Table 10-3: Used status byte bits and their meaning
Bit
no. Short description Bit is set if
1 Device status register summary A sensor is connected or disconnected or when an error has
occurred in a sensor, depending on the configuration of the
sensor status register.
Chapter 10.2.2, "Device status register" , on page 122.
2 Error queue not empty The error queue has an entry. If this bit is enabled by the ser-
vice request enable register, each entry of the error queue
generates a service request. An error can thus be recognized
and specified in detail by querying the error queue. The query
yields a conclusive error message. This procedure is recom-
mended since it considerably reduces the problems of IEC/
IEEE-bus control.
Status reporting system