User`s manual

Model 335 status system
76543210
PON CME EXE QYE OPC
AND
OR
AND
AND
AND
AND
76543210
7654321
0
AND
AND
AND
OR
AND
AND
AND
76543210
76543210
AND
RQS
MSS
Generate service
request—reset by
serial poll
Read by *STB?
7 6 543210
AND
OR
AND
AND
76543210
AND
Standard event
Status register
*ESR?
Standard event
Status enable register
*ESE, *ESE?
Operation
condition register
OPST?
Operation
event register
OPSTR?
Operation event
enable register
OPSTE, OPSTE?
PON = Power on
CME = Command error
EXE = Execution error
QYE = Query error
OPC = Operation complete
Not
used
Not
used
Not
used
PON CME EXE QYE OPC
Not
used
Not
used
Not
used
OSB MSS ESBRQS MAV
Not
used
Not
used
Not
used
Not
used
OSB
CAL
RAMP1 RAMP2 OVLD ALARM
CAL RAMP1 RAMP2 OVLD ALARM
ESBNot used MAV
Not
used
CAL
COM
COM
COM
RAMP1 RAMP2
ATUNE
NRDG
ATUNE NRDG
ATUNE NRDG OVLD ALARM
Not
used
Not
used
Not
used
– Bit
– Name
– Bit
– Name
– Bit
– Name
– Bit
– Name
– Bit
– Name
– Bit
– Name
– Bit
– Name
Output
buffer
Status byte register
*STB?
Service request
enable register
*SRE, *SRE?
OSB = Operation summary bit
RQS = Service request
MSS = Master summary status bit
ESB = Event status summary bit
MAV = Message available summary bit
COM = Processor communication error
CAL = Calibration error
ATUNE = Autotune process completed
NRDG = New sensor reading
RAMP1 = Loop 1 ramp done
RAMP2 = Loop 2 ramp done
OVLD = Sensor overload
ALARM = Sensor alarming
6. 2 .4 S t a tu s S y st e m Ove r v ie w 93
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FIGURE 6-1