156
Reference Manual
00809-0100-4021, Rev JA
Configuration
April 2017
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 151)
2. Check L_TYPE parameter (see “L_TYPE” on page 151)
3. Check XD_SCALE engineering units. (see “XD_SCALE and
OUT_SCALE” on page 151)
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 151)
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 151.
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