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Reference Manual
00809-0200-4101, Rev AA
July 2008
C-5
Rosemount 2051
Diagnostics
In addition to the BLOCK_ERR and XD_ERROR parameters, more detailed
information on the measurement status can be obtained via
TB_DETAILED_STATUS. The table below lists the potential errors and the
possible corrective actions for the given values. The corrective actions are in
order of increasing system level compromises. The first step should always
be to reset the transmitter and then if the error persists, try the steps in the
table below. Start with the first corrective action and then try the second.
Modes
The transducer block supports two modes of operation as defined by the
MODE_BLK Parameter:
Automatic (Auto)—The channel outputs reflect the analog
input measurement.
Out of Service (OOS)—Channel outputs status is set to Bad: Out of Service
for each channel. The BLOCK_ERR parameter shows Out of Service. In this
mode, you can make changes to all configurable parameters. The target
mode of a block may be restricted to one or more of the supported modes.
Alarm Detection
Alarms are not generated by the transducer block. By correctly handling the
status of the channel values, the down stream block (AI) will generate the
necessary alarms for the measurement. The error that generated this alarm
can be determined by looking at BLOCK_ERR and XD_ERROR and
TB_DETAILED_STATUS.
Status Handling
Normally, the status of the output channels reflects the status of the
measurement value, the operating condition of the measurement electronics,
and any active alarm condition.
Value Description Corrective Actions
0x00000001 Sensor hardware incompatible with software
1.Restart Processor
2.Send to Service Center
0x00000002 Sensor board EEPROM burn failure
1.Restart the Processor
0x00000004 Sensor board EEPROM not initialized with
factory data
1.Restart Processor
2.Send to Service Center
0x00000008 Temperature sensor not updating
1.Restart Processor
2.Reconnect sensor ribbon
cable
3.Send to Service Center
0x00000010 Pressure sensor not updating
1.Restart Processor
2.Reconnect sensor ribbon
cable
3.Send to Service Center
0x00000080 Sensor EEPROM Checksum failure
1.Restart Processor
2.Send to Service Center
0x00000100 Pressure sensor HI limit exceeded
1.Check Pressure
2.Restart Processor
0x00000200 Pressure sensor LO limit exceeded
1.Check Pressure
2.Restart Processor
0x00001000 Temperature sensor HI limit exceeded
1.Check Ambient Temp.
2.Restart Processor
0x00004000 Temperature SECONDARY_VALUE
range exceeded
1.Check Ambient Temp.
2.Restart Processor