BACnet PTP Serial Driver Manual
Page 34 of 34
Appendix D.5. BACnet Specific Statistics
Stat
Description
Resolution
Link Control
A “who-is” link control message 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.
Unsupported
Properties
A request for an unsupported
property was received.
This is not an error. BACnet clients often poll
all properties of a particular object to
determine which properties are supported.
Segmentation
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.
This is not an error
– the BACnet client will
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.
You should not see this message. It normally
indicates a configuration error.
Write
Access
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.
Exception Errors
A BACnet Service was denied
because it is not supported.
This may be a problem on the Client system.
Consult the PIC statement to determine what
services are supported.
