WIFI constantly reboots when application not connected | LabJack
 

WIFI constantly reboots when application not connected

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michael78
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WIFI constantly reboots when application not connected

I have a T7 Pro device and i am using a wifi connection.  My application communicates using MODBUS.  When my application is running there is no problem, but when I stop the program, the wifi status shows the wifi is continually re-booting.  This happens every 5-6 seconds.  I have made sure that WATCHDOG_ENABLE_DEFAULT is 0.  I am watching the WIFI_STATUS register using Kipling over a USB connection.  I was sure this was a watchdog configuration problem so i have tried doing a factory reset by starting the T7 with SPC-FIO2 link.  What could cause this behaviour? What can I try?  I only noticed this today and i dont think it was happening before.  I do not know what could have changed.

thank you in advance,

Michael.

LabJack Support
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Hi Michael,

Hi Michael,

The wifi module on the T7 will often drop off the network when there is no activity. To combat this the T7's firmware will constantly ping the network's gateway and reset the module if the pings can't get through. Perhaps the gateway is no longer responding to pings.

michael78
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Thank You!  I had set up a

Thank You!  I had set up a static IP address but I did not sepcify the gateway IP,  I assumed this was not needed.  It is not needed for TCP communication on the subnet, but it certainly is needed if the T7 wants to ping it.  After I specified the IP, subnet mask and gateway in the static IP settings the device is behaving properly.  Thanks again for the quick response,

Michael.