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9.7
Self-diagnostic Functions
The HART configuration tool can be used to run
self-diagnostics on a device and check for incorrect
data settings.
(1) Using DD and DTM
The Self test and Status commands are available
for self-diagnostics. When Self test is run, the
display unit shows an error code and alarm
message if the device detects any illegal parameter
settings or functional faults.
• Procedure to call up the Self test display
[Root Menu] → Diagnosis/Service → Test/Status →
Self test
If no error is detected, "Self test OK" is displayed on
the configuration tool.
If the specific diagnostic item is known for the
check, you can directly call up the item by using the
Status command.
The status is categorized from 1 to 7. Read the
table at the end of Section 9.9.
Show an example below to confirm the status of
Status group 1.
• Procedure to call up the Status display
[Root Menu] → Diagnosis/Service → Test/Status →
Status → Status group 1
If no error is detected, "Off" is displayed on the
configuration tool.
If there is an error, "On" is displayed on the
configuration tool, and a countermeasure for that
error is necessary.
Example of display: Span > 10 m/s
Span < 0.3 m/s
TTL > 10000 p/s
TTL < 0.0001 p/s
4-20 Lmt Err
<9. OPERATION VIA HART CONFIGURATION TOOL (HART 7)>
On
Off
Off
Off
Off
9.8 HART Specific Functions
9.8.1 Test Output, Simulation, and Squawk
NOTE
Fixed current output, Flow Simulation Mode,
and Device Variable Simulation Function
continue for a given holding time, then is
released automatically. Even if the HART
configuration tool power supply is turned off or
the communication cable is disconnected, the
test output will continue for that time.
The holding time can be selected from 10 min,
30 min*, 60 min, 3 hour, 6 hour or 12 hour.
*: Default value.
• Procedure to call up the display
[Root Menu] → Diagnosis/
DD
DTM
Service → Test → Test Time
(1) Fixed current output
This feature can be used to output a fixed current
for loop checks.
Call up the test output parameter (Loop test) and
select the output signal.
• Procedure to call up the display
DD
[Root Menu] → Diagnosis/Service
DTM
→ Test → Loop test →
Display Item
4mA
Output a 4mA DC signal
20mA
Output a 20mA DC signal
Other
Set a desired output signal value
End
Exit
(2) Device Variable Simulation Function
Using the simulation function, the output signal can
be confirmed by setting any value and status to the
selected device variable.
Call up the parameter and follow the message
shown.
After completing the step 5, the simulation starts.
The indicator shows output and warning (93: Dev
Sim Wng).
9-4
Contents
IM 01E30D01-01EN
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