Last modified by Karry Zhuang on 2024/07/11 11:58
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... ... @@ -10,6 +10,7 @@ 10 10 11 11 Connection 12 12 13 + 13 13 [[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %) 14 14 15 15 Connection ... ... @@ -28,6 +28,7 @@ 28 28 29 29 Connection 30 30 32 + 31 31 [[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]] 32 32 33 33 Connection ... ... @@ -51,17 +51,29 @@ 51 51 52 52 Connection1 53 53 56 +((( 54 54 How to connect with Energy Meter： 58 +))) 55 55 60 +((( 56 56 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 +))) 57 57 64 +((( 58 58 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below 66 +))) 59 59 68 +((( 60 60 Power Source VIN to RS485-LN VIN+ 70 +))) 61 61 72 +((( 62 62 Power Source GND to RS485-LN VIN- 74 +))) 63 63 76 +((( 64 64 Once there is power, the RS485-LN will be on. 78 +))) 65 65 66 66 [[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]] 67 67 ... ... @@ -68,7 +68,7 @@ 68 68 Connection2 69 69 70 70 71 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="7 63" width="573"]]85 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]] 72 72 73 73 Connection3 74 74 ... ... @@ -124,7 +124,7 @@ 124 124 125 125 (% class="box infomessage" %) 126 126 ((( 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 141 + AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c 128 128 ))) 129 129 130 130 a: length for the return of AT+COMMAND ... ... @@ -211,7 +211,7 @@ 211 211 212 212 ==== 1.3.3.2 via LoRaWAN DOWNLINK ==== 213 213 214 -[[image: https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]228 +[[image:image-20220512104358-3.png]] 215 215 216 216 ((( 217 217 DOWNLINK ... ... @@ -222,12 +222,15 @@ 222 222 ))) 223 223 224 224 ((( 225 -Type Code 0xAF 239 +**Type Code 0xAF** 226 226 ))) 227 227 228 228 ((( 243 +(% class="box infomessage" %) 244 +((( 229 229 0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx. 230 230 ))) 247 +))) 231 231 232 232 ((( 233 233 Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink. ... ... @@ -292,6 +292,7 @@ 292 292 293 293 DOWNLINK 294 294 312 + 295 295 [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]] 296 296 297 297 DOWNLINK ... ... @@ -319,12 +319,12 @@ 319 319 check digit: Even 320 320 ))) 321 321 322 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height=" 800" width="600"]]340 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]] 323 323 324 324 USB 325 325 326 326 327 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="8 00" width="600"]]345 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]] 328 328 329 329 USB 330 330 ... ... @@ -338,7 +338,7 @@ 338 338 ))) 339 339 340 340 ((( 341 - output:01 03 04 00 00 00 42 7A 02 359 + output: 01 03 04 00 00 00 42 7A 02 342 342 ))) 343 343 344 344 [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]] ... ... @@ -350,28 +350,36 @@ 350 350 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. 351 351 352 352 ((( 371 +((( 353 353 Set the device address according to the parameters in the appendix of the MODBUS communication protocol. 354 354 ))) 374 +))) 355 355 356 356 [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]] 357 357 358 -Example:These two meters are examples of setting parameters and device addresses. 378 +**Example**:These two meters are examples of setting parameters and device addresses. 359 359 360 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height=" 800" width="600"]]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"]] 361 361 362 362 [[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]] 363 363 364 364 ((( 385 +((( 365 365 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. 366 366 ))) 388 +))) 367 367 368 368 ((( 391 +((( 369 369 We can use AT+CFGDEV to set the device address. 370 370 ))) 394 +))) 371 371 372 372 ((( 397 +((( 373 373 We modify the device address 01 of the first energy meter to 02. 374 374 ))) 400 +))) 375 375 376 376 [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]] 377 377
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