Specifications

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WTS Temperature sensor 24 / 32
2.7 Datalog Feature
2.7.1 How Datalog works
WTS uses confirmed uplink to send each uplink packet to LoRaWAN server, after the packet is sent,
WTS will waiting for the ACK message from LoRaWAN server.
If WTS didn’t got the ACK, WTS will consider out of LoRaWAN service and mark the Status  None
ACK Flag bit to 1, meanwhile, WTS will record this unarrived packet.
If WTS got the ACK from LoRaWAN server, WTS will consider it is in LoRaWAN service. Then WTS will
check if there is some old unarrived packets and send them together to the server.
Each Normal data entry is 11 bytes,
To save airtime and battery, WTS will send max date entries according to the current DR and
Frequency bands.
For example, in US915 band, the max payload for different DR is:
a) DR0: max is 11 bytes so one entry of data
b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
c) DR2: total payload includes 11 entries of data
d) DR3: total payload includes 22 entries of data.
If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0
Example:
If WTS has below data inside Flash:
Flash Addr |Time | Ext | BAT voltage| Value
8019540 systime= 2021/10/26 13:24:20 1 3599 Temp1=26.92 Temp2=0.00 1
8019550 systime= 2021/10/26 13:25:20 1 3599 Temp1=26.90 Temp2=0.00 1
8019560 systime= 2021/10/26 13:26:20 1 3599 Temp1=26.89 Temp2=0.00 1
8019570 systime= 2021/10/26 13:27:20 1 3599 Temp1=26.88 Temp2=0.00 1
8019580 systime= 2021/10/26 13:28:20 1 3599 Temp1=26.85 Temp2=0.00 1
8019590 systime= 2021/10/26 13:29:20 1 3599 Temp1=26.85 Temp2=0.00 1
80195A0 systime= 2021/10/26 13:30:20 1 3599 Temp1=26.83 Temp2=0.00 1
80195B0 systime= 2021/10/26 13:31:20 1 3599 Temp1=26.82 Temp2=0.00 1
80195C0 systime= 2021/10/26 13:32:20 1 3599 Temp1=26.81 Temp2=0.00 1
80195D0 systime= 2021/10/26 13:33:20 1 3599 Temp1=26.79 Temp2=0.00 1