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Last modified by Mengting Qiu on 2025/07/01 15:58
From version 105.1
edited by Edwin Chen
on 2025/06/27 11:06
Change comment: There is no comment for this version
To version 104.6
edited by Edwin Chen
on 2025/06/27 11:05
Change comment: There is no comment for this version

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446 -Once S31x-LB/LS Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to S31x-LB/LS. If S31x-LB/LS fails to get the time from the server, S31x-LB/LS will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
447 -
448 -(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
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450 -
451 451  === 2.5.3 Unix TimeStamp ===
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462 462  [[image:image-20250328173355-6.jpeg]]
463 463  
464 464  
460 +
461 +=== 2.5.4 Set Device Time ===
462 +
463 +
464 +User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
465 +
466 +Once S31x-LB/LS Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to S31x-LB/LS. If S31x-LB/LS fails to get the time from the server, S31x-LB/LS will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
467 +
468 +(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
469 +
470 +
465 465  === 2.5.4 Datalog Uplink payload (FPORT~=3) ===
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