The 8508A Status Reporting Structure - Fluke 8508A User Manual

8508A
Users Manual
Note that the slash-delimited /^END/ box is not outlined. This is to draw attention to the
fact that it is not a data element, but represents the EOI line being set true with the last
byte NL to terminate the program message.

The 8508A Status Reporting Structure

The IEEE 488.2 status reporting structure provides the application programmer with a
mechanism to choose the status information required at each stage in the application
program.
4-8
PUD
phs
Arbitrary Block Data Element
Note: The registers are binarily weighted - the numbers in the boxes are bit numbers, not weighted values.
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
Summary Bit
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 BlockSize
Mathematical Overflow
Overload
Lo Limit
Hi Limit
Min
Max
Figure 4-2. 8508A Status Report Structure
# 1
digit
2
digit digit
# 0 user message
RQS
ESB MAV
6
7 5 4 3
MSS
PON URQ CME EXE DDE QYE
7 6 5 4 3
RAV STC MOF O-L LLM HLM
7 6 5 4 3
user message
NL /^END/
SRE phs Nrf
SRE?
MES
STB?
2 1 0
ESE phs Nrf
ESE?
RQC OPC
ESR?
2 1 0
Request
Control
Not used
on 1271
MESE phs Nrf
MESE?
MIN MAX
MESR?
2 1 0
adj206f.eps
adj208f.eps