Knowledgebase
How to Set/Reset the auto detect of the Digital Tachograph?
Posted by Squarell Technology on 25 October 2013 10:13 AM

All DCF’s (for 8000 Series) with version number 130109 or higher have a routine inside that automatically recognize the Tachograph brand. Every 5 seconds the DCF searches the connected Digital Tachograph. When the DCF was not able to identify the Tachograph after 8 attempts it will set up to read the available Tachograph data from the CANbus. Please be sure that your Firmware version is Rev41 and higher.

 

a. By sending RS232 messages

 

Requesting the settings of the initialized Digital Tacho

 

To request the Tacho settings, the following message must be send:

TachoK,1<CR><LF>

 

Squarell device will reply with:

TachoK,8,x,x,1<CR><LF>

1st   x= K-Line messages coming in

2nd  x= Tacho messages are recognized

 

Restarting the Digital Tacho initialisation or Forcing to a Digital Tacho brand:

 

To Restart the initialisation process automatically, send the following message:

SetTachoK,0,1,512<CR><LF>

 

To force the device to VDO settings send the following message:

SetTachoK,8,2,512<CR><LF>

 

To force the device to Stoneridge settings send the following message:

SetTachoK,8,3,512<CR><LF>

 

To force the device to Actia settings send the following message:

SetTachoK,8,4,512<CR><LF>

 

In case of HDLC/PPP protocol please remove the <CR><LF> and add the Flag character <~> at the start and at the end of the string. Please don’t forget to add the checksum before the Flag character <~> at the end.

 

b. By sending CANbus messages

 

To Restart the initialisation process automatically, send the following message:

PGN 18FFA9FA: 00 01 00 20 00 00 00 00

 

To force the device to VDO settings send the following message:

PGN 18FFA9FA: 08 02 00 20 00 00 00 00

 

To force the device to Stoneridge settings send the following message:

PGN 18FFA9FA: 08 03 00 20 00 00 00 00

 

To force the device to Actia settings send the following message:

PGN 18FFA9FA: 08 04 00 20 00 00 00 00

 

c. By performing a Manual reinitialize sequence in the truck:

 

At ignition on press 12 times the brake pedal in 10 seconds. You then will see that the LED of the device will go off and on in Green again.


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