User guide
Appendix B: Diagnostics Output Data (D-packets)
D2119 Dart RTLS User Guide 118
Reference tag detected
Description: A reference tag with tag ID <refTagID>, configured to be at
location( x,y,z), is detected with a tag battery level of <battery> at UNIX time of
<timestamp>.
Recommended Action: None.
Message Type: This event packet will be sent only once when the reference tag
is detected for the first time since firmware restart or it had been reported as
lost.
Message Format:
Dart: D,refTagID,x,y,z,battery,timestamp,DpacketID,‘Reference tag detected’
Reference tag battery low
Description: This D-packet message is sent approximately every minute on
each reference tag whose battery is low.
After receiving 60 consecutive tag reports from a reference tag with battery
level equal or less than ‘9’, the Dart RTLS Hub puts the reference tag into
battery condition. This message will be cleared once the battery status is at a
value above 9.
Recommended Action: Replace reference tag.
Message Type: Sent every minute.
Message Format:
Dart: D,refTagID,x,y,z,battery,timestamp,DpacketID,‘Warning: Reference tag
battery low’
Reference tag battery OK
Description: A reference tag configured at location (x, y, z) recovered from
battery low condition. When a reference gets into battery low condition, once
its battery status is at a value above the threshold, it exits from battery low
condition and send this D-packet once
Recommended Action: None.
Message Type: This event packet will be sent only once after the reference tag
exits from battery low condition.
Message Format:
Dart: D,refTagID,x,y,z,battery,timestamp,DpacketID,‘Reference tag battery OK’
Receiver does not see
reference tag
Description: An active Receiver with Receiver # <Rx#>, which is configured at
location (x, y, z), has not seen one of its associated reference tags for at least 20
seconds
Recommended Action: Verify that Receiver with Receiver # <Rx#> has power
and is within range of the reference tag.
Message Type: This warning message will be sent only when the Receiver does
not detect the reference tag for more than 20 seconds.
Message Format:
Dart: D,Rx#,x,y,z,refTagID,timestamp,DpacketID,‘Warning: receiver does not
see the reference tag <refTagID>’
Receiver has detected a
reference tag
Description: An active Receiver with Receiver # <Rx#>, which is configured at
location (x, y, z), has seen one of its associated reference tags after a Hub
firmware restart.
Recommended Action: None.
Message Type: This information packet is sent only once when the Receiver
detects the reference tag for the first time since Hub firmware restart or it had
been reported as the Receiver has not seen the reference tag.
Message Format:
Dart: D,Rx#,x,y,z,refTagID,timestamp,DpacketID,‘Receiver has detected the
reference tag <refTagID>‘