Sending Commands to Atrack Device

Hey there,

This may well be a silly question, however I am currently having issues sending GPRS commands to a Atrack AK7V-ME. (I wish to adjust some of the configuration over the wire without having to do SMS commands and responses, especially as it's not cheap to send SMS messages here.

All my Teltonika units Receive and Reply to commands, however the single Atrack device does not, at all. it does however reply to SMS messages.

I accept this may just be a fault with this singular device, but would welcome any advice or direction if I am perhaps missing something crazy obvious.

For all intents and purposes the Atrack device seems to work.

What commands have you tried? Have you checked the documentation to see if it's correct format for GPRS?

I have tried the following, all are known to respond

AT$GPRS=?
AT$INFO=?
AT$TRAC=?

I worked with ATrack devices for a time and we only ever formatted commands in this manner.

Even over serial we would send commands like this.

Unless I have missed a required obvious Line in the
Config xml

The devices should reply $OK or reply with the configuration information attached
for example

$TRAC=141,20,100,15,0,0,2,0,0,0

It is possible it’s a device fault or shitty firmware. However i have no other Atrack devices to test my theory on currently

For an example
My Teltonika FTC921s replied flawlessly on FW0.4.0 when upgraded to FW2.1.4 they stopped responding/listening. this was resolved with FW3.0.8 they work rock solid on Traccar again now.

Thank you for your Time

It's very possible that command format is different between SMS and GPRS.

Thanks Anton,

I will try to get another ATrack device to verify against.

I note this in the docs after a re-read

I have been too buried in the actual contents of the command.

• For the serial port and GPRS communications, it is mandatory to terminate a command
line using <CR><LF>.
• For the SMS communication, the <CR><LF> is not needed. The commands are followed
by a response that includes <CR><LF>.

Traccar automatically adds <CR><LF>, so I hope you're not adding those.

Nope not at all