Skip to Content
Last modified by Xiaoling on 2023/07/18 10:12
From version 202.1
edited by Edwin Chen
on 2022/10/06 19:27
Change comment: Uploaded new attachment "image-20221006192726-1.png", version {1}
To version 205.1
edited by Edwin Chen
on 2022/10/11 18:16
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -61,8 +61,6 @@
61 61  * Tri-color LED to indicate working status
62 62  * Datalog feature (Max 3328 records)
63 63  
64 -
65 -
66 66  == 1.3 Specification ==
67 67  
68 68  
... ... @@ -87,8 +87,6 @@
87 87  * ±2°C accuracy from -55°C to +125°C
88 88  * Operating Range: -55 °C ~~ 125 °C
89 89  
90 -
91 -
92 92  = 2. Connect LHT65N to IoT Server =
93 93  
94 94  
... ... @@ -280,9 +280,6 @@
280 280  * The 7th byte (EXT #): defines the external sensor model.
281 281  * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
282 282  
283 -
284 -
285 -
286 286  === 2.4.1 Decoder in TTN V3 ===
287 287  
288 288  
... ... @@ -315,9 +315,6 @@
315 315  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
316 316  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
317 317  
318 -
319 -
320 -
321 321  === 2.4.3 Built-in Temperature ===
322 322  
323 323  
... ... @@ -329,9 +329,6 @@
329 329  
330 330  * Temperature:  (0xF5C6-65536)/100=-26.18℃
331 331  
332 -
333 -
334 -
335 335  === 2.4.4 Built-in Humidity ===
336 336  
337 337  
... ... @@ -339,9 +339,6 @@
339 339  
340 340  * Humidity:    0x025C/10=60.4%
341 341  
342 -
343 -
344 -
345 345  === 2.4.5 Ext # ===
346 346  
347 347  
... ... @@ -499,9 +499,6 @@
499 499  * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
500 500  * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
501 501  
502 -
503 -
504 -
505 505  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
506 506  
507 507  
... ... @@ -775,9 +775,16 @@
775 775  
776 776  There are two methods:
777 777  
778 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
779 -1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack message and store the sensor data, and it will send all messages (10s interval) after the network recovery. note: a) LHT65N will do ack check for data records sending to make sure every data arrive server. b) LHT65N will send data in CONFIRMED Mode when PNACKMD=1, but it won't re-transmit the same packet , it will just mark it as NONE-ACK and resend after network is detected.
759 +**Method 1**: IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
780 780  
761 +
762 +**Method 2: **Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
763 +
764 +**Note for method 2:**
765 +
766 +* a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
767 +* b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
768 +
781 781  Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
782 782  
783 783  
... ... @@ -1002,15 +1002,18 @@
1002 1002  (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
1003 1003  
1004 1004  (% _mstvisible="1" %)
1005 -[[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
1006 -
1007 -(% _mstvisible="1" %)
1008 1008  (((
1009 1009  (% _mstvisible="2" %)
1010 1010  (((
1011 1011  (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
1012 1012  (((
1013 -Poll Message Flag: 1: This message is a poll message reply.
998 +[[image:image-20221006192726-1.png||height="112" width="754"]]
999 +
1000 +(% class="mark" %)No ACK Message(%%): 1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
1001 +
1002 +(% class="mark" %)Poll Message Flag(%%): 1: This message is a poll message reply.
1003 +
1004 +
1014 1014  )))
1015 1015  )))
1016 1016  )))
... ... @@ -1264,9 +1264,6 @@
1264 1264  * RED LED when external sensor is not connected
1265 1265  * For each success downlink, the PURPLE LED will blink once
1266 1266  
1267 -
1268 -
1269 -
1270 1270  == 2.9 installation ==
1271 1271  
1272 1272  
... ... @@ -1324,9 +1324,6 @@
1324 1324  * Operating Range: -40 ~~ 125 °C
1325 1325  * Working voltage 2.35v ~~ 5v
1326 1326  
1327 -
1328 -
1329 -
1330 1330  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1331 1331  
1332 1332  
... ... @@ -1396,9 +1396,6 @@
1396 1396  
1397 1397  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1398 1398  
1399 -
1400 -
1401 -
1402 1402  == 4.2 Set External Sensor Mode ==
1403 1403  
1404 1404  
... ... @@ -1422,9 +1422,6 @@
1422 1422  
1423 1423  * 0xA20702003c: Same as AT+SETCNT=60
1424 1424  
1425 -
1426 -
1427 -
1428 1428  == 4.3 Enable/Disable uplink Temperature probe ID ==
1429 1429  
1430 1430  
... ... @@ -1455,9 +1455,6 @@
1455 1455  * **0xA800**  **~-~->** AT+PID=0
1456 1456  * **0xA801**     **~-~->** AT+PID=1
1457 1457  
1458 -
1459 -
1460 -
1461 1461  == 4.4 Set Password ==
1462 1462  
1463 1463  
... ... @@ -1509,9 +1509,6 @@
1509 1509  
1510 1510  * There is no downlink command to set to Sleep mode.
1511 1511  
1512 -
1513 -
1514 -
1515 1515  == 4.7 Set system time ==
1516 1516  
1517 1517  
... ... @@ -1620,9 +1620,6 @@
1620 1620  
1621 1621  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1622 1622  
1623 -
1624 -
1625 -
1626 1626  == 4.13 Auto Send None-ACK messages ==
1627 1627  
1628 1628  
... ... @@ -1643,9 +1643,6 @@
1643 1643  
1644 1644  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1645 1645  
1646 -
1647 -
1648 -
1649 1649  = 5. Battery & How to replace =
1650 1650  
1651 1651  
... ... @@ -1715,7 +1715,6 @@
1715 1715  * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1716 1716  * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1717 1717  * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1718 -* (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1719 1719  
1720 1720  (((
1721 1721  In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
... ... @@ -2115,9 +2115,6 @@
2115 2115  
2116 2116  * (% style="color:red" %)**E3**(%%): External Temperature Probe
2117 2117  
2118 -
2119 -
2120 -
2121 2121  = 8. Packing Info =
2122 2122  
2123 2123  
... ... @@ -2131,17 +2131,11 @@
2131 2131  * Device Size:  10 x 10 x 3.5 cm
2132 2132  * Device Weight: 120.5g
2133 2133  
2134 -
2135 -
2136 -
2137 2137  = 9. Reference material =
2138 2138  
2139 2139  
2140 2140  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2141 2141  
2142 -
2143 -
2144 -
2145 2145  = 10. FCC Warning =
2146 2146  
2147 2147