Emerson Rosemount, Reference Manual

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161
Reference Manual
00809-0100-4021, Rev GC
Section 4: F
OUNDATION
fieldbus Configuration
April 2014
Foundation™ fieldbus configuration
4.9.7 Analog input diagnostics
Table 4-9. AI BLOCK_ERR Conditions
Table 4-10. Troubleshooting the AI block
Condition
number Condition name and description
0 Other
1
Block Configuration Error: the selected channel carries a measurement
that is incompatible with the engineering units selected in XD_SCALE,
the L_TYPE parameter is not configured, or CHANNEL = zero.
3
Simulate Active: Simulation is enabled and the block is using a
simulated value in its execution.
7
Input Failure/Process Variable has Bad Status: The hardware is bad, or a
bad status is being simulated.
14 Power Up: Block is not scheduled.
15 Out of Service: The actual mode is out of service.
Symptom Possible causes Recommended actions
Bad or no temperature
readings
(Read the AI “BLOCK_ERR”
parameter) BLOCK_ERR reads OUT OF
SERVICE (OOS) 1. AI Block target mode target mode set to OOS.
2. Resource Block OUT OF SERVICE.
BLOCK_ERR reads
CONFIGURATION ERROR 1. Check CHANNEL parameter (see “CHANNEL” on
page 156 )
2. Check L_TYPE parameter (see “L_TYPE” on page 156 )
3. Check XD_SCALE engineering units. (see “XD_SCALE
and OUT_SCALE” on page 156 )
BLOCK_ERR reads POWERUP Download schedule into block. Refer to host for
downloading procedure.
BLOCK_ERR reads BAD INPUT 1. Sensor Transducer Block Out Of Service (OOS)
2. Resource Block Out of Service (OOS)
No BLOCK_ERR but readings
are not correct. If using Indirect
mode, scaling could be wrong. 1. Check XD_SCALE parameter.
2. Check OUT_SCALE parameter.
(see “XD_SCALE and OUT_SCALE” on page 156 )
No BLOCK_ERR. Sensor needs
to be calibrated or Zero
trimmed. See Section 3: HART® commissioning to determine the
appropriate trimming or calibration procedure.
OUT parameter status reads
UNCERTAIN and substatus
reads EngUnitRangViolation. Out_ScaleEU_0 and EU_100
settings are incorrect. See “XD_SCALE and OUT_SCALE” on page 156 .