TelScope sends logbook data to the VDR through a serial connection. 

Serial port USB3 (D) pin 6,7 / 38400 is used.
Note that data is ONLY sent when data is added to the logbooks.
In the VDR setup the signal must be set to Time Stamp check at the port to (0) otherwise the VDR will alarm.
The connection is unidirected, i.e. no data is sent from the VDR to TelScope.

The data is formatted as NMEA TXT sentences. The talker is RB. The data will typically span several sentences. The logbook entry contains an ID. Later messages that regards this logbook entry will to this ID. Examples of messages that refer to logbook entries like this are:

  • Strike through of entries.
  • Master's signature.
  • Remarks
  • Verification of entries.

The format of the text encoded in the NMEA TXT sentences is json. Example of logbook entry:

$RBTXT,15,01,01,{"creation_time":"2022-05-10-11-57-30"^2C"data":{"collected_d*7C 

$RBTXT,15,02,01,ata":{"STREAM:TELSCOPE.POS":{"collect_failure":false^2C"label*27

$RBTXT,15,03,01,":"Position"^2C"manual_update":false^2C"value":[58.8919^2C10.*5C

$RBTXT,15,04,01,33065]}^2C"STREAM:TELSCOPE.SHIPTIME.UTC_OFFSET":{"collect_fai*6F

$RBTXT,15,05,01,lure":false^2C"label":"Ship time offset"^2C"manual_update":fa*2C

$RBTXT,15,06,01,lse^2C"value":120.0}}^2C"entrytype_category":"Notes & Other"*75

$RBTXT,15,07,01,^2C"entrytype_id":"builtin:deck_lights"^2C"entrytype_name":"D*26

$RBTXT,15,08,01,eck lights"^2C"summary":"Off"^2C"user":{"enabled":true^2C"fir*57

$RBTXT,15,09,01,stname":"Benjamin"^2C"id":"040d1777-99dc-4551-8224-beb7ed2707*47

$RBTXT,15,10,01,46"^2C"position":"Dev"^2C"shortname":"BeKe"^2C"status":"on_du*32

$RBTXT,15,11,01,ty"^2C"surname":"Kehlet"}^2C"user_data":{"onOff":{"datafield_*72

$RBTXT,15,12,01,type":null^2C"label":"On/Off"^2C"type":null^2C"value":"Off"}}*40

$RBTXT,15,13,01,}^2C"event_type":"LOGBOOK_ENTRY_ADDED"^2C"id":"a5773add-473e-*3C

$RBTXT,15,14,01,4551-97f2-45cad52bd255"^2C"parent_id":""^2C"time":"2022-05-10*1E

$RBTXT,15,15,01,-11-57-30"^2C"topic":"TELSCOPE.LOGBOOKS.DECK"^2C"user_id":""}*18

This data is completely self contained in the sense that it contains everything to reproduce the logbook report.