Last modified by Karry Zhuang on 2024/07/11 11:58
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... ... @@ -10,7 +10,6 @@ 10 10 11 11 Connection 12 12 13 - 14 14 [[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %) 15 15 16 16 Connection ... ... @@ -29,7 +29,6 @@ 29 29 30 30 Connection 31 31 32 - 33 33 [[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]] 34 34 35 35 Connection ... ... @@ -53,29 +53,17 @@ 53 53 54 54 Connection1 55 55 56 -((( 57 57 How to connect with Energy Meter: 58 -))) 59 59 60 -((( 61 61 Follow the instructions of the electric energy meter to connect the phase line and the neutral line, and then connect 485A+ and 485B- to RS485A and RA485B of RS485-LN respectively. 62 -))) 63 63 64 -((( 65 65 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below 66 -))) 67 67 68 -((( 69 69 Power Source VIN to RS485-LN VIN+ 70 -))) 71 71 72 -((( 73 73 Power Source GND to RS485-LN VIN- 74 -))) 75 75 76 -((( 77 77 Once there is power, the RS485-LN will be on. 78 -))) 79 79 80 80 [[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]] 81 81 ... ... @@ -82,7 +82,7 @@ 82 82 Connection2 83 83 84 84 85 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="7 12" width="534"]]71 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="763" width="573"]] 86 86 87 87 Connection3 88 88 ... ... @@ -138,7 +138,7 @@ 138 138 139 139 (% class="box infomessage" %) 140 140 ((( 141 - 127 +AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c 142 142 ))) 143 143 144 144 a: length for the return of AT+COMMAND ... ... @@ -225,7 +225,7 @@ 225 225 226 226 ==== 1.3.3.2 via LoRaWAN DOWNLINK ==== 227 227 228 -[[image:image -20220512104358-3.png]]214 +[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]] 229 229 230 230 ((( 231 231 DOWNLINK ... ... @@ -236,15 +236,12 @@ 236 236 ))) 237 237 238 238 ((( 239 - **Type Code 0xAF**225 +Type Code 0xAF 240 240 ))) 241 241 242 242 ((( 243 -(% class="box infomessage" %) 244 -((( 245 245 0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx. 246 246 ))) 247 -))) 248 248 249 249 ((( 250 250 Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink. ... ... @@ -309,7 +309,6 @@ 309 309 310 310 DOWNLINK 311 311 312 - 313 313 [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]] 314 314 315 315 DOWNLINK ... ... @@ -337,12 +337,12 @@ 337 337 check digit: Even 338 338 ))) 339 339 340 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height=" 725" width="544"]]322 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]] 341 341 342 342 USB 343 343 344 344 345 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height=" 728" width="546"]]327 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]] 346 346 347 347 USB 348 348 ... ... @@ -367,37 +367,21 @@ 367 367 368 368 If users need to read the parameters of multiple energy meters, they need to modify the device address, because the default device address of each energy meter is 01. 369 369 370 -((( 371 -((( 372 372 Set the device address according to the parameters in the appendix of the MODBUS communication protocol. 373 -))) 374 -))) 375 375 376 376 [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]] 377 377 378 - **Example**:These two meters are examples of setting parameters and device addresses.356 +Example:These two meters are examples of setting parameters and device addresses. 379 379 380 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height=" 737" width="553"]]358 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]] 381 381 382 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height=" 733" width="550"]]360 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]] 383 383 384 -((( 385 -((( 386 386 First of all, since the default device address of the energy meter is 01, the configuration of two energy meters will conflict, so we first connect an energy meter and configure the device address. 387 -))) 388 -))) 389 389 390 -((( 391 -((( 392 392 We can use AT+CFGDEV to set the device address. 393 -))) 394 -))) 395 395 396 -((( 397 -((( 398 398 We modify the device address 01 of the first energy meter to 02. 399 -))) 400 -))) 401 401 402 402 [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]] 403 403
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