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Instruction Manual
IM-106-880C, OI
September 2009
Hazardous Area OCX 8800
7-34
Troubleshooting Refer to Table 7-25 to troubleshoot any problems that you encounter.
Table 7-25. Troubleshooting
Symptom Possible Cause Corrective Action
Mode will not
leave OOS
1. Target mode not set
2. Configuration error
3. Resource block
4. Schedule
1. Set target mode to something other than OOS.
2. BLOCK_ERR will show the configuration error
bit set. The following are parameters that must be
set before the block is allowed out of OOS:
a. CHANNEL must be set to a valid value and
cannot be left at initial value of 0.
b. XD_SCALE.UNITS_INDX must match the
units in the transducer block channel value.
c. L_TYPE must be set to Direct, Indirect, or In-
direct Square Root and cannot be left at ini-
tial value of 0.
3. The actual mode of the Resource block is
OOS. See Resource Block Diagnostics for cor-
rective action.
4. Block is not scheduled and therefore cannot
execute to go to Target Mode. Schedule the block
to execute.
Process and/or
block alarms will
not work
1. Features
2. Notification
3. Status Options
1. FEATURES_SEL does not have Alerts en-
abled. Enable the Alerts bit.
2. LIM_NOTIFY is not high enough. Set equal to
MAX_NOTIFY.
3. STATUS_OPTS has Propagate Fault Forward
bit set. This should be cleared to cause an alarm
to occur.
Value of output
does not make
sense
1. Linearization Type
2. Scaling
1. Does not make L_TYPE must be set to Direct,
Indirect, or Indirect Square Root and cannot be
left at initial value 0.
2. Scaling parameters are set incorrectly:
a. XD_SCALE.EU0 and EU100 should match
that of the transducer block channel value.
b. OUT_SCALE.EU0 and EU100 are not set
properly.
Cannot Set
HI_LIMIT,
HI_HI_LIMIT
LO_LIMIT, or
LO_LO_LIMIT
Values
1. Scaling 1. Limit values are outside the OUT_SCALE.EU0
and OUT_SCALE.EU100 values. Change
OUT_SCALE or set values within range.