Chapter 9
Troubleshooting & Service
The table below provides troubleshooting for problems related to the
fieldbus network.
Fieldbus
Troubleshooting
Table 9–1.
Fieldbus troubleshooting
Description of Problem
Possible Cause
Possible Solution/Corrective Action
Configuration is incorrect or
incomplete.
Verify configuration (reference your host
documentation).
AI_TRANSDUCER block will not go
into AUTO mode (stays in OOS mode).
The resource block is in OOS mode.
Set the resource block mode to AUTO.
Other blocks cannot be in AUTO mode if
the resource block is in OOS mode.
A device is not shown in the
configuration tree.
Communication parameters are
incorrect.
Verify communication parameters
(reference your host documentation).
A function block alternates between
MAN and AUTO modes. Status of the
input parameter is Bad::No comm.
There is not enough time between the
function block and communication
schedules.
Edit the schedule to add more time
between the function block and
communication schedules (reference
your host documentation).
The parameter is read-only.
If the parameter is read-only, it may not
be modified.
The block operating mode is incorrect.
Certain parameters can only be modified
in OOS or MAN modes (reference your
host documentation).
The data is out of range.
Enter data within the specified range.
A block parameter cannot be modified.
There is no power to the device.
Check ALARM_STATUS_FLAGS_3. If FB
IF to device comm error is displayed,
check the DensityPRO CPU.
A device does not transmit alarms.
Alarms are not configured.
Configure alarms (reference your host
documentation).
Block alarm active parameters.
Invalid feature selection.
The ANALOG_INPUT block units do not
match the transducer block units.
Thermo Fisher Scientific
DensityPRO with
F
OUNDATION
™ fieldbus
Application Guide
9-1
Содержание DensityPRO
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