Fisher FIELDVUE DVC6200f Instruction Manual page 178

Detailed Setup—AI Function Block
July 2013
Troubleshooting
Refer to table 4‐56 to troubleshoot any problem that you encounter.
Table 4‐56. Troubleshooting
Symptom
Mode will not leave OOS
Process and/or block alarms will not work
Value of output does not make sense
Cannot set HI_LIMIT [28], HI_HI_LIMIT [26],
LO_LIMIT [30], or LO_LO_LIMIT [32] VALUES
AI Function Block Parameter List (table 4‐57)
D Read/Write Capability: RO - Read Only, RW - Read Write
D Mode: The block mode(s) required to write to the parameter
D Double indentation and shaded Index Number indicates sub‐parameter
176
Possible Causes
Target mode is not set
Configuration error
Resource block
Schedule
Features
Notification
Status Options
Linearization Type
Scaling
Scaling
Instruction Manual
Corrective Action
Set target mode to something other than OOS
BLOCK_ERR [6] will show the configuration error bit set. The
following are parameters that must be set before the block is
allowed out of OOS:
D CHANNEL [15] must be set to a valid value and cannot be
left at initial value of 0.
D XD_SCALE [10]. UNITS_INDEX must match the units in the
transducer block channel value.
D L_TYPE [16] must be set to Direct, Indirect, or Indirect
Square Root and cannot be left at an initial value of 0.
The actual mode of the Resource block is OOS. See Resource
Block Diagnostics for corrective action.
Block is not scheduled and therefore cannot execute to go to
Target Mode. Schedule the block to execute.
FEATURES_SEL [18] in the resource block does not have Alerts
enabled. Enable the Reports Supported bit.
LIM_NOTIFY [32] in the resource block is not high enough. Set
equal to MAX_NOTIFY [31], also in the resource block.
STATUS_OPTS [14] has Propagate Fault Forward bit set. This
should be cleared to cause an alarm to occur.
L_TYPE [16] must be set to Direct, Indirect, or Indirect Square
Root and cannot be left at an initial value of 0.
Scaling parameters are set incorrectly:
D XD_SCALE.EU0 and EU100 should match that of the trans­
ducer block channel value.
D OUT_SCALE.EU0 and EU100 are not set properly.
Limit values are outside the OUT_SCALE.EU0 and
OUT_SCALE.EU100 values. Change OUT_SCALE [11] or set
values within range.
D103412X012