Device Diagnostic - ABB 266 Operating Instruction

Device diagnostic

The 266 PdP FF produces different type of diagnostic information:
– Device Diagnostic
These are the diagnostic information produced by the Resource and Transducer Blocks and refer to the device status/health
– Process Diagnostic
These are the diagnostic information which are seen through process variable status and process alarms such as the HI, HI HI, LO,
LO LO, DV HI and DV LO alarms implemented in various Function blocks
Scope of this section is to describe the Device Diagnostic to be used by the Asset Management Software.
Standard errors
The FF standard parameter defining the device diagnostic conditions is the BLOCK_ERR contained by each block and mapped as
follow:
Bit 0 Other
Bit 1 Block Configuration Error
Bit 2 Link Configuration Error
Bit 3 Simulate Active
Bit 4 Local Override
Bit 5 Device Fault State Set
Bit 6 Device Needs Maintenance Soon
Bit 7 Sensor Failure detected by this block/process variable has a status of BAD, Sensor Failure
Bit 8 Output Failure detected by this block/backcalculation input has a status of BAD, Device Failure
Bit 9 Memory Failure
Bit 10 Lost Static Data
Bit 11 Lost NV Data
Bit 12 Readback Check Failed
Bit 13 Device Needs Maintenance Now
Bit 14 Power Up
Bit 15 Out of Service
Field Diagnostic Profile (NAMUR NE107)
The device diagnostic info are split into four different alert type parameters relating the four NAMUR NE107 categories, they are:
– RB_FAIL_ACTIVE
– RB_OFFSPEC_ACTIVE
– RB_MAINTENANCE_ACTIVE
– RB_CHECK_ACTIVE
The 4 bit-string parameters are mapped in the same way but each error condition became set only within one of the four parameters.
For some error conditions, the bit mapped within the 4 parameters above is not clear enough for the maintenance person to get the
root of the problem, for this reason it has been defined an additional parameter RB_EXTENDED_ACTIVE with additional detailed
information about the specific error condition.
Only the errors without details mapped in the RB_x_ACTIVE and all the RB_EXTENDED_ACTIVE errors can be simulated from the
RB_DIAGNOSIS_SIMULATION.
Important
Only one condition/bit per time can be simulated.
The RB_SIMULATION_STATUS must be enabled before to simulate any individual error condition. The same parameter can be read
with the scope to clarify if an error condition is active because simulated or calculated.
Some of the error bits mapped in the RB_x_ACTIVE can be masked from the RB_DIAGNOSIS_MASK.
BLOCK_ERR mapping
Important
Critical error conditions cannot be masked.
2600T Series Pressure transmitters | OI/266/FF/ADD-EN Rev. B 27