Fluke 8508A User Manual page 115

Service Request
Enable Register
STATUS BYTE
REGISTER
Request for Service Bit
Master Status Summary Bit
Event Status Summary Bit
Message Available Bit
Measurement Event Status
Event
Status Enable Register
Standard-
Defined Event
Status Register
Power On
User Request
Command Error
Execution Error
Device Dependent Error
Query Error
Operation Complete
Measurement Event
Status Enable Register
Measurement
Event Status
Register
Reading Available
Number of stored readings
matches commanded block size
Mathematical Overflow
Overload
Lo Limit
Hi Limit
Min
Max
Read Service Request Register
*STB?
(Nr1) Recalls the service request register for summary bits. The returned value , when
converted to base 2 (binary), identifies the summary bits as detailed in the status data
structure diagram. There is no method of clearing this byte directly. Its condition relies on
the clearing of the overlying status data structure.
Service Request Enable
SRE
Enables the standard and user-defined summary bits in the service request byte, which
will generate a service request.
RQS
ESB MAV
6
7 5
MSS
Summary Bit
CME
PON URQ EXE
7 6 5
RAV STC MOF O-L
7 6 5
Status Data Structure
*
STB?
Read Service Request Register
*
SRE
phs
Service Request Enable
Remote Operations Using the IEEE 488 Interface
MES
4 3 2 1 0
DDE QYE RQC OPC
4 3 2 1 0
Request
Control
Not used
on 1281
LLM HLM MIN MAX
4 3 2 1 0
Nrf
Status Reporting
SRE phs Nrf
SRE?
STB?
ESE phs Nrf
ESE?
ESR?
MESE phs Nrf
MESE?
MESR?
adj255f.eps
adj266f.eps
adj262f.eps
4
4-41