Instruction Manual
D102748X012
DLC3010 Digital Level Controller
Service Tools
May 2018
72
D
M: Processor Free Time Depleted
- There is insufficient free time remaining in the execution period to complete
the scheduled tasks.
If this message appears:
1. Reset the processor or cycle power to the instrument.
2. If the condition repeats, replace the electronics module. (Check warranty status.)
D
M: NVM Write Limit Exceeded
- When active, indicates the total number of writes to one of the three areas of
NVM has exceeded the hardcoded limit. Try cycling power to the instrument and see if it clears.
If it does not clear:
1. If the Configuration NVM count is 0, replace the electronics module. Check for system conditions that could
cause frequent automatic writes to configuration data.
2. If the Transducer NVM count is 0, the most likely cause is a circuit failure on the transducer board. Replace and
submit the instrument for warranty consideration.
Note
The Buffer NVM is only used during firmware load. It should never deplete its remaining write count.
D
A: Analog Output Fixed
- The Analog Output is in Fixed Current Mode.
If this message appears:
1. If the device is in multi-drop mode (Polling Address is non-zero) or a loop test is in progress, this is an intended
state.
2. If point-to-point network topology is desired, restore polling address to zero
3. If device was accidentally left in loop test, exit fixed current mode.
D
A: Cold Start
- A power cycle or device reset has occurred.
If this message appears:
1. If event was unexpected, check condition of loop wiring and power supply.
2. Check the terminal box integrity and instrument function over the range of environmental conditions being
experienced.
D
A: Instrument Temperature Too Low
- When active, indicates that the Instrument Temperature has exceeded the
value of the Instrument Temperature Low Alert Threshold.
D
A: Instrument Temperature Too High
- When active, indicates that the Instrument Temperature has exceeded
the value of the Instrument Temperature High Alert Threshold.
If instrument temperature alert messages appear:
1. Check accuracy of temperature signal.
2. Modify mounting/installation of device to maintain the operating temperature within limits.
3. Check functionality. If degraded, replace the device.
4. Check for appropriate value of Alert Threshold.
D
A: Process Temperature Too Low
- When active, indicates that the Process Temperature has exceeded the value
of the Process Temperature Low Alert Threshold.
D
A: Process Temperature Too High
- When active, indicates that the Process Temperature has exceeded the value
of the Process Temperature High Alert Threshold.
If process temperature alert messages appear:
1. Check accuracy of temperature signal.
2. Adjust process temperature within limits.
3. Inspect sensor hardware for any damage caused by temperature extremes. Repair or replace components as
required.
4. Check for appropriate value of Alert Threshold.
