FieldServer FS-8704-06 Benutzerhandbuch
FS-8704-06 BACnet IP Driver Manual
Page 21 of 24
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Appendix C. Troubleshooting Tips
Appendix C.1.
Debugging a BACnet connection
•
If duplicate object instances are accidentally configured in the FieldServer, the second call of the
instance will overwrite the first one. This may cause a BACnet Object to be “lost.”
instance will overwrite the first one. This may cause a BACnet Object to be “lost.”
•
If “Virtual_BCU_…” is not being indicated as the device description for the FieldServer on the
BACnet SCADA system, then the FieldServer is not communicating with the SCADA system. If
the Present_Value’s name is being indicated, but the Present_Value shows question marks, then
it is most likely that the Client side of the FieldServer is not communicating.
BACnet SCADA system, then the FieldServer is not communicating with the SCADA system. If
the Present_Value’s name is being indicated, but the Present_Value shows question marks, then
it is most likely that the Client side of the FieldServer is not communicating.
•
Polling BACnet addresses that are not configured for Liebert systems may cause the connection
to fail in older versions of Liebert. Please contact your Liebert supplier for more information.
to fail in older versions of Liebert. Please contact your Liebert supplier for more information.
•
Some of the BACnet IP features result in the creation of files (priarray.ini; desc.ini; alarms.ini) on
the FieldServer. Sometimes updates of firmware can result in these files becoming outdated.
Deleting these files will restore configuration defaults and may assist with configuration errors.
the FieldServer. Sometimes updates of firmware can result in these files becoming outdated.
Deleting these files will restore configuration defaults and may assist with configuration errors.
•
Extra memory is required to store Map Descriptors that have the active/inactive text parameters
specified. If the defaults are appropriate, do not specify these parameters. This will save
memory and allow more Map Descriptors to be created
specified. If the defaults are appropriate, do not specify these parameters. This will save
memory and allow more Map Descriptors to be created
•
McQuay Units
are shipped with a default Device instance of the last 6 digits of the McQuay
Serial number.
Trane Specific Tips
Trane Specific Tips
•
When new points are added to the FieldServer it is important to restart Summit Workstation or
BCU, otherwise these new points may not be seen by the FieldServer.
BCU, otherwise these new points may not be seen by the FieldServer.
•
Disconnect the FieldServer from the BACnet network when transferring images to the BCU.
Appendix C.2.
BACnet Specific Statistics
Stat
Description
Resolution
Link Control
A “who-is” link control message
was send or received.
was send or received.
It is normal to receive a few link control
messages. If the number is higher than the
transmit/receive messages, however, there
may be a problem with lost
communications..
messages. If the number is higher than the
transmit/receive messages, however, there
may be a problem with lost
communications..
Unsupported
Properties
Properties
A request for an unsupported
property was received
property was received
This is not an error. BACnet clients often
poll all properties of a particular object to
determine which properties are supported.
poll all properties of a particular object to
determine which properties are supported.
Segmentation
Not Supported
Not Supported
Data was requested but the
response would have exceeded the
maximum size of the APDU and
could not be sent using an un-
segmented message.
response would have exceeded the
maximum size of the APDU and
could not be sent using an un-
segmented message.
This is not an error - the BACnet client will
use a different method to read data from
the FieldServer.
use a different method to read data from
the FieldServer.
Sequence Error
Invoke ID of a reply did not match
the Invoke ID of the poll.
the Invoke ID of the poll.
You should not see this message. It
normally indicates a configuration error.
normally indicates a configuration error.
Write Access
Denied
Denied
A write to an object was denied.
This typically happens when trying to write
to an Input Object that is not Out-Of-
Service. It is not possible to write to Input
Objects.
to an Input Object that is not Out-Of-
Service. It is not possible to write to Input
Objects.
Exception
Errors
Errors
A BACnet Service was denied
because it is not supported
because it is not supported
This may be a problem on the Client
system. Consult the PIC statement to
determine what services are supported.
system. Consult the PIC statement to
determine what services are supported.