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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 104.3
edited by Edwin Chen
on 2025/06/27 11:03
Change comment: There is no comment for this version

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436 436  === 2.5.2 Enable Datalog ===
437 437  
438 438  
439 -User need to make sure below two settings are enable to use datalog;
439 +=== 2.5.3 Unix TimeStamp ===
440 440  
441 -* (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via LoRaWAN MAC command
442 -* (% style="color:blue" %)**PMACKMD=1**(%%)** **to enable datalog feature
443 443  
442 +S31x-LB/LS uses Unix TimeStamp format based on
444 444  
444 +[[image:image-20250328173339-5.jpeg]]
445 445  
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).
446 +User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
447 447  
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.**
448 +Below is the converter example
449 449  
450 +[[image:image-20250328173355-6.jpeg]]
450 450  
451 -=== 2.5.3 Unix TimeStamp ===
452 452  
453 +So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
453 453  
454 -S31x-LB/LS uses Unix TimeStamp format based on
455 455  
456 -[[image:image-20250328173339-5.jpeg]]
456 +=== 2.5.3 Set Device Time ===
457 457  
458 -User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
459 459  
460 -Below is the converter example
459 +User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
461 461  
462 -[[image:image-20250328173355-6.jpeg]]
461 +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).
463 463  
463 +(% 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.**
464 464  
465 +
465 465  === 2.5.4 Datalog Uplink payload (FPORT~=3) ===
466 466  
467 467