Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 130.3 >
edited by Xiaoling
on 2024/02/19 14:45
To version < 153.1 >
edited by Dilisi S
on 2024/11/01 04:38
>
Change comment: Uploaded new attachment "lt-22222-l-manually-p1.png", version {1}

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.pradeeka
Content
... ... @@ -19,36 +19,30 @@
19 19  
20 20  = 1.Introduction =
21 21  
22 -== 1.1 What is LT Series I/O Controller ==
22 +== 1.1 What is the LT-22222-L I/O Controller? ==
23 23  
24 24  (((
25 -
26 -
27 27  (((
28 -The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
29 -)))
30 -)))
26 +The Dragino (% style="color:blue" %)**LT-22222-L I/O Controller**(%%) is an advanced LoRaWAN device designed to provide seamless wireless long-range connectivity with various I/O options, including analog current and voltage inputs, digital inputs and outputs, and relay outputs.
31 31  
32 -(((
33 -The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
28 +The LT-22222-L I/O Controller simplifies and enhances I/O monitoring and controlling. It is ideal for professional applications in wireless sensor networks, including irrigation systems, smart metering, smart cities, building automation, and more. These controllers are designed for easy, cost-effective deployment using LoRa wireless technology.
34 34  )))
35 -
36 -(((
37 -The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
38 38  )))
39 39  
40 40  (((
41 -The use environment includes:
33 +With the LT-22222-L I/O Controller, users can transmit data over ultra-long distances with low power consumption using LoRa, a spread-spectrum modulation technique derived from chirp spread spectrum (CSS) technology that operates on license-free ISM bands.
42 42  )))
43 43  
44 -(((
45 -1) If user's area has LoRaWAN service coverage, they can just install the I/O controller and configure it to connect the LoRaWAN provider via wireless.
46 -)))
36 +> The LT Series I/O Controllers are designed for easy, low-cost installation on LoRaWAN networks.
47 47  
48 48  (((
49 -2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
39 +You can connect the LT-22222-L I/O Controller to a LoRaWAN network service provider in several ways:
50 50  
51 -
41 +* If there is public LoRaWAN network coverage in the area where you plan to install the device (e.g., The Things Network), you can select a network and register the LT-22222-L I/O controller with it.
42 +* If there is no public LoRaWAN coverage in your area, you can set up a LoRaWAN gateway, or multiple gateways, and connect them to a LoRaWAN network server to create adequate coverage. Then, register the LT-22222-L I/O controller with this network.
43 +* Setup your own private LoRaWAN network.
44 +
45 +> You can use the Dragino LG308 gateway to expand or create LoRaWAN coverage in your area.
52 52  )))
53 53  
54 54  (((
... ... @@ -59,153 +59,62 @@
59 59  
60 60  == 1.2 Specifications ==
61 61  
62 -(((
63 -
64 -
65 65  (% style="color:#037691" %)**Hardware System:**
66 -)))
67 67  
68 -* (((
69 -STM32L072xxxx MCU
70 -)))
71 -* (((
72 -SX1276/78 Wireless Chip 
73 -)))
74 -* (((
75 -(((
76 -Power Consumption:
77 -)))
58 +* STM32L072xxxx MCU
59 +* SX1276/78 Wireless Chip 
60 +* Power Consumption:
61 +** Idle: 4mA@12v
62 +** 20dB Transmit: 34mA@12v
63 +* Operating Temperature: -40 ~~ 85 Degree, No Dew
78 78  
79 -* (((
80 -Idle: 4mA@12v
81 -)))
82 -* (((
83 -20dB Transmit: 34mA@12v
84 -)))
85 -)))
86 -
87 -(((
88 -
89 -
90 90  (% style="color:#037691" %)**Interface for Model: LT22222-L:**
91 -)))
92 92  
93 -* (((
94 -2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
95 -)))
96 -* (((
97 -2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
98 -)))
99 -* (((
100 -2 x Relay Output (5A@250VAC / 30VDC)
101 -)))
102 -* (((
103 -2 x 0~~20mA Analog Input (res:0.01mA)
104 -)))
105 -* (((
106 -2 x 0~~30V Analog Input (res:0.01v)
107 -)))
108 -* (((
109 -Power Input 7~~ 24V DC. 
110 -)))
67 +* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
68 +* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
69 +* 2 x Relay Output (5A@250VAC / 30VDC)
70 +* 2 x 0~~20mA Analog Input (res:0.01mA)
71 +* 2 x 0~~30V Analog Input (res:0.01v)
72 +* Power Input 7~~ 24V DC. 
111 111  
112 -(((
113 -
114 -
115 115  (% style="color:#037691" %)**LoRa Spec:**
116 -)))
117 117  
118 -* (((
119 -(((
120 -Frequency Range:
121 -)))
76 +* Frequency Range:
77 +** Band 1 (HF): 862 ~~ 1020 Mhz
78 +** Band 2 (LF): 410 ~~ 528 Mhz
79 +* 168 dB maximum link budget.
80 +* +20 dBm - 100 mW constant RF output vs.
81 +* +14 dBm high efficiency PA.
82 +* Programmable bit rate up to 300 kbps.
83 +* High sensitivity: down to -148 dBm.
84 +* Bullet-proof front end: IIP3 = -12.5 dBm.
85 +* Excellent blocking immunity.
86 +* Low RX current of 10.3 mA, 200 nA register retention.
87 +* Fully integrated synthesizer with a resolution of 61 Hz.
88 +* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
89 +* Built-in bit synchronizer for clock recovery.
90 +* Preamble detection.
91 +* 127 dB Dynamic Range RSSI.
92 +* Automatic RF Sense and CAD with ultra-fast AFC.
93 +* Packet engine up to 256 bytes with CRC.
122 122  
123 -* (((
124 -Band 1 (HF): 862 ~~ 1020 Mhz
125 -)))
126 -* (((
127 -Band 2 (LF): 410 ~~ 528 Mhz
128 -)))
129 -)))
130 -* (((
131 -168 dB maximum link budget.
132 -)))
133 -* (((
134 -+20 dBm - 100 mW constant RF output vs.
135 -)))
136 -* (((
137 -+14 dBm high efficiency PA.
138 -)))
139 -* (((
140 -Programmable bit rate up to 300 kbps.
141 -)))
142 -* (((
143 -High sensitivity: down to -148 dBm.
144 -)))
145 -* (((
146 -Bullet-proof front end: IIP3 = -12.5 dBm.
147 -)))
148 -* (((
149 -Excellent blocking immunity.
150 -)))
151 -* (((
152 -Low RX current of 10.3 mA, 200 nA register retention.
153 -)))
154 -* (((
155 -Fully integrated synthesizer with a resolution of 61 Hz.
156 -)))
157 -* (((
158 -FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
159 -)))
160 -* (((
161 -Built-in bit synchronizer for clock recovery.
162 -)))
163 -* (((
164 -Preamble detection.
165 -)))
166 -* (((
167 -127 dB Dynamic Range RSSI.
168 -)))
169 -* (((
170 -Automatic RF Sense and CAD with ultra-fast AFC.
171 -)))
172 -* (((
173 -Packet engine up to 256 bytes with CRC.
174 -
175 -
176 -
177 -)))
178 -
179 179  == 1.3 Features ==
180 180  
181 -
182 182  * LoRaWAN Class A & Class C protocol
183 -
184 184  * Optional Customized LoRa Protocol
185 -
186 186  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
187 -
188 188  * AT Commands to change parameters
189 -
190 190  * Remote configure parameters via LoRa Downlink
191 -
192 192  * Firmware upgradable via program port
193 -
194 194  * Counting
195 195  
196 196  == 1.4 Applications ==
197 197  
198 -
199 199  * Smart Buildings & Home Automation
200 -
201 201  * Logistics and Supply Chain Management
202 -
203 203  * Smart Metering
204 -
205 205  * Smart Agriculture
206 -
207 207  * Smart Cities
208 -
209 209  * Smart Factory
210 210  
211 211  == 1.5 Hardware Variants ==
... ... @@ -225,83 +225,124 @@
225 225  * 1 x Counting Port
226 226  )))
227 227  
228 -= 2. Power ON Device =
131 += 2. Assembling the Device =
229 229  
133 +== 2.1 What is included in the package? ==
230 230  
231 -(((
232 -The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
233 -)))
135 +The package includes the following items:
234 234  
235 -(((
236 -PWR will on when device is properly powered.
137 +* 1 x LT-22222-L I/O Controller
138 +* 1 x LoRaWAN antenna matched to the frequency of the LT-22222-L
139 +* 1 x bracket for wall mounting
140 +* 1 x programming cable
237 237  
238 -
239 -)))
142 +Attach the LoRaWAN antenna to the connector labeled **ANT** (located on the top right side of the device, next to the upper terminal block). Secure the antenna by tightening it clockwise.
240 240  
241 -[[image:1653297104069-180.png]]
144 +== 2.2 Terminals ==
242 242  
146 +Upper screw terminal block (from left to right):
243 243  
244 -= 3. Operation Mode =
148 +(% style="width:634px" %)
149 +|=(% style="width: 295px;" %)Terminal|=(% style="width: 338px;" %)Function
150 +|(% style="width:295px" %)GND|(% style="width:338px" %)Ground
151 +|(% style="width:295px" %)VIN|(% style="width:338px" %)Input Voltage
152 +|(% style="width:295px" %)AVI2|(% style="width:338px" %)Analog Voltage Input Terminal 2
153 +|(% style="width:295px" %)AVI1|(% style="width:338px" %)Analog Voltage Input Terminal 1
154 +|(% style="width:295px" %)ACI2|(% style="width:338px" %)Analog Current Input Terminal 2
155 +|(% style="width:295px" %)ACI1|(% style="width:338px" %)Analog Current Input Terminal 1
245 245  
246 -== 3.1 How it works? ==
157 +Lower screw terminal block (from left to right):
247 247  
159 +(% style="width:633px" %)
160 +|=(% style="width: 296px;" %)Terminal|=(% style="width: 334px;" %)Function
161 +|(% style="width:296px" %)RO1-2|(% style="width:334px" %)Relay Output 1
162 +|(% style="width:296px" %)RO1-1|(% style="width:334px" %)Relay Output 1
163 +|(% style="width:296px" %)RO2-2|(% style="width:334px" %)Relay Output 2
164 +|(% style="width:296px" %)RO2-1|(% style="width:334px" %)Relay Output 2
165 +|(% style="width:296px" %)DI2+|(% style="width:334px" %)Digital Input 2
166 +|(% style="width:296px" %)DI2-|(% style="width:334px" %)Digital Input 2
167 +|(% style="width:296px" %)DI1+|(% style="width:334px" %)Digital Input 1
168 +|(% style="width:296px" %)DI1-|(% style="width:334px" %)Digital Input 1
169 +|(% style="width:296px" %)DO2|(% style="width:334px" %)Digital Output 2
170 +|(% style="width:296px" %)DO1|(% style="width:334px" %)Digital Output 1
248 248  
249 -(((
250 -The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**TX LED**(%%) will be on for 5 seconds after joined in network. When there is message from server, the RX LED will be on for 1 second. 
251 -)))
172 +== 2.3 Powering ==
252 252  
253 -(((
254 -In case user can't set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
255 -)))
174 +The LT-22222-L I/O Controller can be powered by a 7–24V DC power source. Connect the power supply’s positive wire to the VIN screw terminal and the negative wire to the GND screw terminal. The power indicator (PWR) LED will turn on when the device is properly powered.
256 256  
257 257  
258 -== 3.2 Example to join LoRaWAN network ==
177 +[[image:1653297104069-180.png]]
259 259  
260 260  
261 -(((
262 -This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here. 
180 += 3. Operation Mode =
263 263  
264 -
265 -)))
182 +== 3.1 How does it work? ==
266 266  
267 -[[image:image-20220523172350-1.png||height="266" width="864"]]
184 +The LT-22222-L is configured to operate in LoRaWAN Class C mode by default. It supports OTAA (Over-the-Air Activation), which is the most secure method for activating a device with a LoRaWAN network server. The LT-22222-L comes with device registration information that allows you to register it with a LoRaWAN network, enabling the device to perform OTAA activation with the network server upon initial power-up and after any subsequent reboots.
268 268  
186 +For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**TX LED**(%%) will be on for 5 seconds after joined in network. When there is message from server, the RX LED will be on for 1 second. 
269 269  
270 -(((
271 -The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
188 +In case you can't set the root key and other identifiers in the network server and must use them from the server, you can use [[AT Commands>>||anchor="H4.UseATCommand"]] to configure them on the device.
272 272  
273 -
274 -)))
190 +== 3.2 Registering with a LoRaWAN network server ==
275 275  
276 -(((
277 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
278 -)))
192 +The diagram below shows how the LT-22222-L connects to a typical LoRaWAN network.
279 279  
280 -(((
281 -Each LT is shipped with a sticker with the default device EUI as below:
282 -)))
194 +[[image:image-20220523172350-1.png||height="266" width="864"]]
283 283  
196 +=== 3.2.1 Prerequisites ===
197 +
198 +Make sure you have the device registration information such as DevEUI, AppEUI, and AppKey with you. The registration information can be found on a sticker that can be found inside the package. Please keep the **registration information** sticker in a safe place for future reference.
199 +
284 284  [[image:image-20230425173427-2.png||height="246" width="530"]]
285 285  
202 +The following subsections explain how to register the LT-22222-L with different LoRaWAN network server providers.
286 286  
287 -Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
204 +=== 3.2.2 The Things Stack Sandbox (TTSS) ===
288 288  
289 -**Add APP EUI in the application.**
206 +* Log in to your [[The Things Stack Sandbox>>https://eu1.cloud.thethings.network]] account.
207 +* Create an application if you do not have one yet.
208 +* Register LT-22222-L with that application. Two registration options available:
290 290  
291 -[[image:1653297955910-247.png||height="321" width="716"]]
210 +==== Using the LoRaWAN Device Repository: ====
292 292  
212 +* Go to your application and click on the **Register end device** button.
213 +* On the **Register end device** page:
214 +** Select the option **Select the end device in the LoRaWAN Device Repository**.
215 +** Choose the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)**.
216 +** Select the **Frequency plan** that matches with your device.
293 293  
294 -**Add APP KEY and DEV EUI**
218 +[[image:lt-22222-l-dev-repo-reg-p1.png||height="625" width="1000"]]
295 295  
296 -[[image:1653298023685-319.png]]
220 +*
221 +** Enter the **AppEUI** in the **JoinEUI** field and click **Confirm** button.
222 +** Enter the **DevEUI** in the **DevEUI** field.
223 +** Enter the **AppKey** in the **AppKey** field.
224 +** In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
225 +** Under **After registration**, select the **View registered end device** option.
297 297  
227 +[[image:lt-22222-l-dev-repo-reg-p2.png||height="625" width="1000"]]
298 298  
299 -(((
300 -(% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
229 +==== Entering device information manually: ====
301 301  
302 -
303 -)))
231 +* On the **Register end device** page:
232 +** Select the **Enter end device specified manually** option.
233 +** Select the **Frequency plan** that matches with your device.
234 +** Select the **LoRaWAN version**.
235 +** Select the **Regional Parameters version**.
236 +** Click **Show advanced activation, LoRaWAN class and cluster settings** option.
237 +** Select **Over the air activation (OTAA)** option under **Activation mode**
238 +** Select **Class C (Continuous)** from the **Additional LoRaWAN class capabilities**.
239 +** Enter **AppEUI** in the **JoinEUI** field and click **Confirm** button.
240 +** Enter **DevEUI** in the **DevEUI** field.
241 +** Enter **AppKey** in the **AppKey** field.
242 +** In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
243 +** Under **After registration**, select the **View registered end device** option.
304 304  
245 +==== Joining ====
246 +
247 +Click on **Live Data** in the left navigation. Then, power on the device, and it will join The Things Stack Sandbox. You can see the join request, join accept, followed by uplink messages form the device showing in the Live Data panel.
248 +
305 305  [[image:1653298044601-602.png||height="405" width="709"]]
306 306  
307 307  
... ... @@ -1159,7 +1159,7 @@
1159 1159  )))
1160 1160  
1161 1161  (((
1162 -01: Close ,  00: Open , 11: No action
1106 +00: Close ,  01: Open , 11: No action
1163 1163  
1164 1164  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1165 1165  |(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**RO1**|(% style="background-color:#4f81bd; color:white" %)**RO2**
... ... @@ -1402,54 +1402,71 @@
1402 1402  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
1403 1403  
1404 1404  
1405 -== 3.5 Integrate with Mydevice ==
1349 +== 3.5 Integrating with ThingsEye.io ==
1406 1406  
1351 +If you are using one of The Things Stack plans, you can integrate ThingsEye.io with your application. Once integrated, ThingsEye.io works as an MQTT client for The Things Stack MQTT broker, allowing it to subscribe to upstream traffic and publish downlink traffic.
1407 1407  
1408 -Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
1353 +=== 3.5.1 Configuring The Things Stack Sandbox ===
1409 1409  
1410 -(((
1411 -(% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1412 -)))
1355 +* Go to your Application and select MQTT under Integrations.
1356 +* In the Connection credentials section, under Username, The Thins Stack displays an auto-generated username. You can use it or provide a new one.
1357 +* For the Password, click the Generate new API key button to generate a password. You can see it by clicking on the eye button.
1413 1413  
1414 -(((
1415 -(% style="color:blue" %)**Step 2**(%%): To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
1359 +[[image:tts-mqtt-integration.png||height="625" width="1000"]]
1416 1416  
1417 -
1418 -)))
1361 +=== 3.5.2 Configuring ThingsEye.io ===
1419 1419  
1420 -[[image:image-20220719105525-1.png||height="377" width="677"]]
1363 +* Login to your thingsEye.io account.
1364 +* Under the Integrations center, click Integrations.
1365 +* Click the Add integration button (the button with the + symbol).
1421 1421  
1367 +[[image:thingseye-io-step-1.png||height="625" width="1000"]]
1422 1422  
1423 1423  
1424 -[[image:image-20220719110247-2.png||height="388" width="683"]]
1370 +On the Add integration page configure the following:
1425 1425  
1372 +Basic settings:
1426 1426  
1427 -(% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1374 +* Select The Things Stack Community from the Integration type list.
1375 +* Enter a suitable name for your integration in the Name box or keep the default name.
1376 +* Click the Next button.
1428 1428  
1429 -(% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1378 +[[image:thingseye-io-step-2.png||height="625" width="1000"]]
1430 1430  
1431 -Search under The things network
1380 +Uplink Data converter:
1432 1432  
1433 -[[image:1653356838789-523.png||height="337" width="740"]]
1382 +* Click the Create New button if it is not selected by default.
1383 +* Click the JavaScript button.
1384 +* Paste the uplink decoder function into the text area (first, delete the default code). The demo decoder function can be found here.
1385 +* Click the Next button.
1434 1434  
1387 +[[image:thingseye-io-step-3.png||height="625" width="1000"]]
1435 1435  
1436 -After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1389 +Downlink Data converter (this is an optional step):
1437 1437  
1438 -[[image:image-20220524094909-1.png||height="335" width="729"]]
1391 +* Click the Create new button if it is not selected by default.
1392 +* Click the JavaScript button.
1393 +* Paste the downlink decoder function into the text area (first, delete the default code). The demo decoder function can be found here.
1394 +* Click the Next button.
1439 1439  
1396 +[[image:thingseye-io-step-4.png||height="625" width="1000"]]
1440 1440  
1441 -[[image:image-20220524094909-2.png||height="337" width="729"]]
1398 +Connection:
1442 1442  
1400 +* Choose Region from the Host type.
1401 +* Enter the cluster of your The Things Stack in the Region textbox.
1402 +* Enter the Username and Password in the Credentials section. Use the same username and password you created with the MQTT page of The Things Stack.
1403 +* Click Check connection to test the connection. If the connection is successful, you can see the message saying Connected.
1404 +* Click the Add button.
1443 1443  
1444 -[[image:image-20220524094909-3.png||height="338" width="727"]]
1406 +[[image:thingseye-io-step-5.png||height="625" width="1000"]]
1445 1445  
1446 1446  
1447 -[[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1409 +Your integration is added to the integrations list and it will display on the Integrations page.
1448 1448  
1411 +[[image:thingseye-io-step-6.png||height="625" width="1000"]]
1449 1449  
1450 -[[image:image-20220524094909-5.png||height="341" width="734"]]
1451 1451  
1452 -
1453 1453  == 3.6 Interface Detail ==
1454 1454  
1455 1455  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1590,7 +1590,6 @@
1590 1590  [[image:image-20240219115718-1.png]]
1591 1591  
1592 1592  
1593 -
1594 1594  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1595 1595  
1596 1596  
... ... @@ -1665,12 +1665,9 @@
1665 1665  == 3.7 LEDs Indicators ==
1666 1666  
1667 1667  
1668 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1669 -|(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:470px" %)**Feature**
1628 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1629 +|(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:460px" %)**Feature**
1670 1670  |**PWR**|Always on if there is power
1671 -|**SYS**|(((
1672 -After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1673 -)))
1674 1674  |**TX**|(((
1675 1675  (((
1676 1676  Device boot: TX blinks 5 times.
... ... @@ -1685,20 +1685,16 @@
1685 1685  )))
1686 1686  )))
1687 1687  |**RX**|RX blinks once when receive a packet.
1688 -|**DO1**|
1689 -|**DO2**|
1690 -|**DO3**|
1691 -|**DI2**|(((
1692 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1645 +|**DO1**|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
1646 +|**DO2**|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
1647 +|**DI1**|(((
1648 +For LT-22222-L: ON when DI1 is high, LOW when DI1 is low
1693 1693  )))
1694 1694  |**DI2**|(((
1695 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1651 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1696 1696  )))
1697 -|**DI2**|(((
1698 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1699 -)))
1700 -|**RO1**|
1701 -|**RO2**|
1653 +|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
1654 +|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
1702 1702  
1703 1703  = 4. Use AT Command =
1704 1704  
... ... @@ -1709,10 +1709,6 @@
1709 1709  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1710 1710  )))
1711 1711  
1712 -(((
1713 -
1714 -)))
1715 -
1716 1716  [[image:1653358238933-385.png]]
1717 1717  
1718 1718  
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