Wiki source code of 1 Communication
Version 30.1 by Ben on 2022/08/22 17:22
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author | version | line-number | content |
---|---|---|---|
1 | = **Modbus RTU** = | ||
2 | |||
3 | === **V-BOX as master** === | ||
4 | |||
5 | Select the protocol “(% class="mark" %)Modbus RTU Slave(All Fuction)”, | ||
6 | |||
7 | (% class="mark" %)then set BaudRate,Port,Stop Bit,Data Bit,Parity | ||
8 | |||
9 | (% style="text-align:center" %) | ||
10 | [[image:1624342015914-382.png||height="486" width="800" class="img-thumbnail"]] | ||
11 | |||
12 | === **V-BOX as slave** === | ||
13 | |||
14 | Select the protocol “(% class="mark" %)**Modbus RTU Master”**, | ||
15 | |||
16 | (% class="mark" %)then set BaudRate,Port,Stop Bit,Data Bit,Parity | ||
17 | |||
18 | (% style="text-align:center" %) | ||
19 | [[image:1624348709622-711.png||queryString="width=809&height=493" height="488" width="800" class="img-thumbnail"]] | ||
20 | |||
21 | **Address List** | ||
22 | |||
23 | (% class="table-bordered" %) | ||
24 | |**Type**|**Register**|**Function code & Description** | ||
25 | |(% rowspan="11" %)Word|(% rowspan="3" %)3|04 (read input register: read current binary value in one or more input registers) | ||
26 | |06 (write single register: write a binary value to a holding register) | ||
27 | |10 (write values to multiple addresses ) | ||
28 | |(% rowspan="3" %)4|03 (read holding register: read current binary value in one or more holding registers) | ||
29 | |06 (write single register: write a binary value to a holding register) | ||
30 | |10 (write values to multiple addresses ) | ||
31 | |(% rowspan="3" %)W6|03 (read holding register: read current binary value in one or more holding registers) | ||
32 | |06 (write single register: write a binary value to a holding register) | ||
33 | |10 (write values to multiple addresses ) | ||
34 | |(% rowspan="2" %)W16|03 (read holding register: read current binary value in one or more holding registers) | ||
35 | |10 (write values to multiple addresses ) | ||
36 | |(% rowspan="11" %)Bit|(% rowspan="3" %)0|01 (Read coil state) | ||
37 | |05 (Force a single coil to force the on/off state of a logic coil) | ||
38 | |0F (Write multiple bits, ie write continuously) | ||
39 | |(% rowspan="3" %)1|02 (Read the input state) | ||
40 | |05 (Force a single coil to force the on/off state of a logic coil) | ||
41 | |0F (Write multiple bits) | ||
42 | |(% rowspan="3" %)W5|01 (Read coil state to obtain the current state of a set of logic coils) | ||
43 | |05 (Force a single coil to force the on/off state of a logic coil) | ||
44 | |0F (Write multiple bits) | ||
45 | |(% rowspan="2" %)W15|01 (Read coil state to obtain the current state of a set of logic coils) | ||
46 | |0F (Write multiple bits) | ||
47 | |||
48 | = **WECON PLC** = | ||
49 | |||
50 | Supported series: WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM | ||
51 | |||
52 | **HMI Settings** | ||
53 | |||
54 | |**Item**|**Settings**|**Note** | ||
55 | |Protocol|WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM| | ||
56 | |Connection|RS422/RS485| | ||
57 | |Baud rate|9600| | ||
58 | |Data bit|7| | ||
59 | |Parity|EVEN| | ||
60 | |Stop bit|1| | ||
61 | |PLC station No.|1| | ||
62 | |||
63 | **Address List** | ||
64 | |||
65 | |**Type**|**Device registers**|**HMI registers**|**Format**|**Range**|**Note** | ||
66 | |(% rowspan="6" %)Bit|X|X|Xo|0~~303237| | ||
67 | |Y|Y|Y o|0~~303237| | ||
68 | |M|M|M d|0~~99999| | ||
69 | |T|T|T d|0~~99999| | ||
70 | |C|C|C d|0~~99999| | ||
71 | |S|S|S d|0~~99999| | ||
72 | |(% rowspan="8" %)Word|X|X|Xo|0~~303237| | ||
73 | |Y|Y|Y o|0~~303237| | ||
74 | |M|M|M d|0~~99999| | ||
75 | |T|T|T d|0~~99999| | ||
76 | |C|C|C d|0~~199| | ||
77 | |D|D|D d|0~~7999| | ||
78 | |S|S|S d|0~~99999| | ||
79 | |SD|SD|SD d|8000~~9999| | ||
80 | |||
81 | **Cable Wiring** | ||
82 | |||
83 | * **RS485** | ||
84 | |||
85 | [[image:image-20220822172124-1.png]] | ||
86 | |||
87 | * **RS422** | ||
88 | |||
89 | [[image:image-20220822172228-2.png]] | ||
90 | |||
91 | |||
92 | **✎Note:** | ||
93 | |||
94 | * HMI COM3 is available in PI8000 series and COM3 is in COM2(hardware PIN 7 and PIN 8) . | ||
95 | * If PLC <= 20 points,such as LX3V-1208/LX3V-0806 PLC,PLC RS485A and RS485B mean PLC COM2 RS485+ and RS485- .PLC COM2 can support modbus. Please refer to PLC COM2 setting manual. | ||
96 | |||
97 | [[https:~~/~~/drive.google.com/drive/folders/13rgso7oUlatZQN_SNEcJCcN4toEdDPoP?usp=sharing>>url:https://drive.google.com/drive/folders/13rgso7oUlatZQN_SNEcJCcN4toEdDPoP?usp=sharing]] | ||
98 | |||
99 | |||
100 | == **V-BOX and Wecon LX5V serial communication** == | ||
101 | |||
102 | This example introduces the establishment of serial port communication between Wecon HMI and LX5V. It is introduced through three parts: PLC software configuration, HMI software configuration, and hardware wiring. | ||
103 | |||
104 | **Software configuration of PLC** | ||
105 | |||
106 | **1)PLC programming software** | ||
107 | |||
108 | [[image:image-20220810164710-1.png]] | ||
109 | |||
110 | |||
111 | **2)New PLC project** | ||
112 | |||
113 | Click New Project and select the PLC model. | ||
114 | |||
115 | [[image:image-20220810172412-1.png]] | ||
116 | |||
117 | |||
118 | **3)Set Serial port parameters** | ||
119 | |||
120 | Follow the steps below to configure Serial port parameters | ||
121 | |||
122 | Baud rate:115200 | ||
123 | |||
124 | Data bit:8 | ||
125 | |||
126 | Stop bit:1 | ||
127 | |||
128 | Parity:No verification | ||
129 | |||
130 | [[image:image-20220810165759-3.png]] | ||
131 | |||
132 | |||
133 | **4)Registers list** | ||
134 | |||
135 | [[image:image-20220811102219-3.png]] | ||
136 | |||
137 | |||
138 | **HMI software configuration** | ||
139 | |||
140 | **1)HMI programming software** | ||
141 | |||
142 | [[image:image-20220810171237-4.png]] | ||
143 | |||
144 | **2)New HMI project** | ||
145 | |||
146 | Click New Project and select the HMI model. | ||
147 | |||
148 | [[image:image-20220810172010-5.png]] | ||
149 | |||
150 | |||
151 | **3)Set communication port parameters** | ||
152 | |||
153 | Click the communication configuration button on the left to find the communication protocol with LX5V. After selecting the protocol, configure the communication parameters of the COM port. | ||
154 | |||
155 | Baud rate:115200 | ||
156 | |||
157 | Data bit:8 | ||
158 | |||
159 | Stop bit:1 | ||
160 | |||
161 | Parity:No verification | ||
162 | |||
163 | [[image:image-20220811104012-1.png]] | ||
164 | |||
165 | |||
166 | **hardware connection** | ||
167 | |||
168 | **1)Hardware wiring diagram** | ||
169 | |||
170 | This example introduces WeconHMI with LX5V PLC to establish communication through serial port. The connection diagram is as follows: | ||
171 | |||
172 | |||
173 | |||
174 | [[image:image-20220811103005-4.png]] | ||
175 | |||
176 | [[image:image-20220811103227-7.png]] | ||
177 | |||
178 | The above are all the steps for establishing serial port communication between Wecon HMI with LX5V PLC. | ||
179 | |||
180 | == **HMI and Wecon LX5V-N Ethernet communication** == | ||
181 | |||
182 | This example introduces the establishment of Ethernet communication between Wecon HMI and LX5V. It is introduced through three parts: PLC software configuration, HMI software configuration, and hardware wiring. | ||
183 | |||
184 | **Software configuration of PLC** | ||
185 | |||
186 | **1)PLC programming software** | ||
187 | |||
188 | [[image:image-20220810164710-1.png]] | ||
189 | |||
190 | **2)New PLC project** | ||
191 | |||
192 | Click New Project and select the PLC model. | ||
193 | |||
194 | [[image:image-20220811115454-1.png]] | ||
195 | |||
196 | **3)Set Ethernet port parameters** | ||
197 | |||
198 | Follow the steps below to configure Ethernet parameters | ||
199 | |||
200 | PLC IP address:192.168.39.200 | ||
201 | |||
202 | default gateway:192.168.39.1 | ||
203 | |||
204 | subnet mask:255.255.255.0 | ||
205 | |||
206 | [[image:image-20220811140530-2.png]] | ||
207 | |||
208 | **4)Registers list** | ||
209 | |||
210 | [[image:image-20220811102219-3.png]] | ||
211 | |||
212 | **HMI software configuration** | ||
213 | |||
214 | **1)HMI programming software** | ||
215 | |||
216 | [[image:image-20220810171237-4.png]] | ||
217 | |||
218 | **2)New HMI project** | ||
219 | |||
220 | Click New Project and select the HMI model. | ||
221 | |||
222 | [[image:image-20220810172010-5.png]] | ||
223 | |||
224 | **3)Set communication port parameters** | ||
225 | |||
226 | Click the project setting button on the left to configure the IP address of the HMI machine to ensure that the HMI and PLC IP remain in a local area network. | ||
227 | |||
228 | HMI IP address:192.168.39.201 | ||
229 | |||
230 | default gateway:192.168.39.1 | ||
231 | |||
232 | subnet mask:255.255.255.0 | ||
233 | |||
234 | [[image:image-20220811170753-2.png]] | ||
235 | |||
236 | Next, click Communication Settings to configure the IP of the HMI communication object. | ||
237 | |||
238 | [[image:image-20220811163047-1.png]] | ||
239 | |||
240 | **hardware connection** | ||
241 | |||
242 | **1)Hardware wiring diagram** | ||
243 | |||
244 | This example introduces WeconHMI with LX5V-N PLC to establish communication through ethernet. The connection diagram is as follows: | ||
245 | |||
246 | [[image:image-20220811170248-1.png]] | ||
247 | |||
248 | The above are all the steps for establishing ethernet communication between Wecon HMI with LX5V PLC. | ||
249 | |||
250 | (% style="text-align:center" %) | ||
251 | [[image:1624348978863-771.png||queryString="width=812&height=494" height="487" width="800" class="img-thumbnail"]] | ||
252 | |||
253 | = **Rockwell PLC** = | ||
254 | |||
255 | == **Communication with AB CompactLogix L1769** == | ||
256 | |||
257 | ((( | ||
258 | ((( | ||
259 | This example introduces the establishment of Ethernet communication between Wecon V-box and Allen-Bradley L1769. It is introduced through three parts: PLC software configuration, V-box software configuration, and hardware wiring. | ||
260 | ))) | ||
261 | |||
262 | |||
263 | ))) | ||
264 | |||
265 | ((( | ||
266 | (% class="wikigeneratedid" id="HSoftwareconfigurationofPLC" %) | ||
267 | ((( | ||
268 | **Software configuration of PLC** | ||
269 | ))) | ||
270 | |||
271 | (% class="wikigeneratedid" id="HPLCprogrammingsoftware" %) | ||
272 | ((( | ||
273 | **1)PLC programming software** | ||
274 | ))) | ||
275 | |||
276 | [[image:image-20220714162600-1.png]] | ||
277 | |||
278 | (% class="wikigeneratedid" id="HNewPLCproject" %) | ||
279 | ((( | ||
280 | **2)New PLC project** | ||
281 | ))) | ||
282 | |||
283 | ((( | ||
284 | ((( | ||
285 | Click New Project and select the PLC model. | ||
286 | ))) | ||
287 | ))) | ||
288 | |||
289 | ((( | ||
290 | [[image:image-20220714162617-2.png]] | ||
291 | ))) | ||
292 | |||
293 | ((( | ||
294 | |||
295 | |||
296 | [[image:image-20220714162652-4.png]] | ||
297 | ))) | ||
298 | |||
299 | ((( | ||
300 | (% class="wikigeneratedid" id="HSetEthernetparameters" %) | ||
301 | ((( | ||
302 | **3)Set Ethernet parameters** | ||
303 | ))) | ||
304 | |||
305 | ((( | ||
306 | ((( | ||
307 | ((( | ||
308 | Follow the steps below to configure Ethernet parameters | ||
309 | ))) | ||
310 | ))) | ||
311 | ))) | ||
312 | |||
313 | ((( | ||
314 | ((( | ||
315 | ((( | ||
316 | PLC IP address:192.168.40.101 | ||
317 | ))) | ||
318 | ))) | ||
319 | ))) | ||
320 | |||
321 | ((( | ||
322 | ((( | ||
323 | ((( | ||
324 | default gateway:192.168.40.1 | ||
325 | ))) | ||
326 | ))) | ||
327 | ))) | ||
328 | |||
329 | ((( | ||
330 | ((( | ||
331 | ((( | ||
332 | subnet mask:255.255.255.0 | ||
333 | ))) | ||
334 | ))) | ||
335 | ))) | ||
336 | |||
337 | ((( | ||
338 | [[image:image-20220714162713-5.png]] | ||
339 | ))) | ||
340 | |||
341 | ((( | ||
342 | |||
343 | ))) | ||
344 | |||
345 | ((( | ||
346 | (% class="wikigeneratedid" id="HV-boxsoftwareconfiguration" %) | ||
347 | ((( | ||
348 | **V-box software configuration** | ||
349 | ))) | ||
350 | |||
351 | (% class="wikigeneratedid" id="HV-boxprogrammingsoftware" %) | ||
352 | ((( | ||
353 | **1)V-box programming software** | ||
354 | ))) | ||
355 | |||
356 | (% class="wikigeneratedid" %) | ||
357 | ((( | ||
358 | [[image:image-20220714162725-6.png]] | ||
359 | ))) | ||
360 | |||
361 | (% class="wikigeneratedid" id="HConfiguredevicenetwork" %) | ||
362 | ((( | ||
363 | **2)Configure device network** | ||
364 | ))) | ||
365 | |||
366 | ((( | ||
367 | ((( | ||
368 | ((( | ||
369 | Click the Configuration Download button[[image:image-20220714115308-8.png||height="22" width="15"]], It is used to configure the device network, update the device time, obtain the device machine code, check the device network, etc. | ||
370 | ))) | ||
371 | |||
372 | ((( | ||
373 | In the example below, the IP address of V-Box is configured as 192.168.40.66, and the networking method is 4G connection | ||
374 | ))) | ||
375 | ))) | ||
376 | ))) | ||
377 | |||
378 | ((( | ||
379 | ((( | ||
380 | [[image:image-20220714162737-7.png]] | ||
381 | |||
382 | |||
383 | ))) | ||
384 | ))) | ||
385 | ))) | ||
386 | ))) | ||
387 | |||
388 | (% class="wikigeneratedid" id="HV-netadddevice" %) | ||
389 | ((( | ||
390 | **3)V-net add device** | ||
391 | ))) | ||
392 | ))) | ||
393 | |||
394 | ((( | ||
395 | ((( | ||
396 | Open VNET client software → add device. As shown in the figure below, click "+" in the order of steps, and the Add Device window will pop up, enter the device machine code/product code, device password, and device alias to add the device. [[image:image-20220714162752-8.png]] | ||
397 | ))) | ||
398 | |||
399 | |||
400 | ))) | ||
401 | |||
402 | ((( | ||
403 | (% class="wikigeneratedid" id="HSetcommunicationportparameters" %) | ||
404 | ((( | ||
405 | **4)Set communication port parameters** | ||
406 | ))) | ||
407 | |||
408 | ((( | ||
409 | In the device list on the left, find the Vbox that communicates with the L1769, click it and select configuration,communication port configuration in the main interface to add a communication protocol. | ||
410 | ))) | ||
411 | |||
412 | [[image:image-20220714162805-9.png]] | ||
413 | ))) | ||
414 | |||
415 | ((( | ||
416 | The communication port is selected as Ethernet, the device type is selected as Allen-Bradley, the protocol is Allen-BradleyMicro850_FreeTag EthemetIP, and the IP is the internal IP address of the L1769 PLC. The port number is 44818. | ||
417 | ))) | ||
418 | |||
419 | [[image:image-20220714162814-10.png]] | ||
420 | |||
421 | |||
422 | ((( | ||
423 | After adding the protocol Allen-BradleyMicro850_FreeTag, click[[image:image-20220714143838-2.png]]icon add label.[[image:image-20220714162827-11.png]] | ||
424 | ))) | ||
425 | |||
426 | (% class="wikigeneratedid" id="HEngineeringproduction" %) | ||
427 | ((( | ||
428 | **5)Engineering production** | ||
429 | ))) | ||
430 | |||
431 | (% class="wikigeneratedid" %) | ||
432 | ((( | ||
433 | ((( | ||
434 | According to your own needs, use the V-NET client software to edit the required data monitoring points. | ||
435 | ))) | ||
436 | |||
437 | [[image:image-20220714162841-12.png]] | ||
438 | |||
439 | |||
440 | ((( | ||
441 | **hardware connection** | ||
442 | ))) | ||
443 | ))) | ||
444 | |||
445 | ((( | ||
446 | **1)Hardware wiring diagram** | ||
447 | ))) | ||
448 | |||
449 | ((( | ||
450 | ((( | ||
451 | This example introduces Wecon V-box with Allen-Bradley L1769 PLC to establish communication through Ethernet. The connection diagram is as follows: | ||
452 | ))) | ||
453 | |||
454 | [[image:image-20220714162856-13.png]] | ||
455 | |||
456 | ((( | ||
457 | The above are all the steps for establishing Ethernet communication between Wecon V-box with Allen-Bradley L1769 PLC. | ||
458 | |||
459 | |||
460 | == **Allen-Bradley Ethernet DF1** == | ||
461 | |||
462 | [[download link>>https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Allen-Bradley%20Ethernet%20DF1.zip]] | ||
463 | |||
464 | |||
465 | = **Siemens PLC** = | ||
466 | ))) | ||
467 | ))) | ||
468 | |||
469 | == **Siemens S7-1200** == | ||
470 | |||
471 | [[download link>>https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Communicate%20with%20S7-1200%20via%20Ehernet.zip]] | ||
472 | |||
473 | == **Communication with S7-200 Smart** == | ||
474 | |||
475 | [[download link>>https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Communication%20with%20S7-200%20Smart.zip]] | ||
476 | |||
477 | = **Delta PLC** = | ||
478 | |||
479 | == **Delta DVP Ethernet** == | ||
480 | |||
481 | [[download link>>https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Delta%20DVP%20Ethernet.zip]] | ||
482 | |||
483 | == **Delta DVP Serial Protocol** == | ||
484 | |||
485 | [[download link>>https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Delta%20DVP%20Ethernet.zip]] | ||
486 | |||
487 | == **Communicate with Mitsubishi FX Series** == | ||
488 | |||
489 | [[download link>>url:https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Communicate%20with%20Mitsubishi%20FX%20Series.zip]] | ||
490 | |||
491 | == **Communicate with VB inverter** == | ||
492 | |||
493 | [[download link>>url:https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Communicate%20with%20VB%20inverter.zip]] | ||
494 | |||
495 | == **Omron CP1 Series** == | ||
496 | |||
497 | [[download link>>https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Communication%20with%20ORMON%20CP1%20Series.zip]] | ||
498 | |||
499 | == **Omron CJ2M** == | ||
500 | |||
501 | [[download link>>https://ftp.we-con.com.cn/Download/WIKI/V-BOX/Demo/%E9%80%9A%E8%AE%AF%E6%A1%88%E4%BE%8B/Communication%20with%20ORMON%20CJ2M.zip]] | ||
502 | |||
503 | = **2 User define protocol** = | ||
504 | |||
505 | More serial port script instruction,please refer manual:[[Lua script function>>doc:V-BOX.V-Net.Manual.04 Lua Script.01 Lua Functions.WebHome]]~-~-->[[3.Serial port operation>>url:http://docs.we-con.com.cn/wiki/vbox/view/HMI/04.Lua%20script%20%20function%20and%20operation/01.Lua%20script%20function/#H3.Serialportoperation]] | ||
506 | |||
507 | == **Read the temperature sensor.** == | ||
508 | |||
509 | the commond format is as beliow: | ||
510 | |||
511 | Send commond:01 03 02 00 00 03 04 73 | ||
512 | |||
513 | Feedback commond:01 03 06 07 F7 0E 7E B7 35 | ||
514 | |||
515 | Temperature data:07 F7,desimal = 2039,it means temperature is 20.39℃. | ||
516 | |||
517 | Humidity data:0E 7E,desimal = 3710, it mean humidity is 37.10%RH. | ||
518 | |||
519 | Script Demo: | ||
520 | |||
521 | ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-- | ||
522 | |||
523 | function com.main() | ||
524 | ~-~-dosomething | ||
525 | openPlc() | ||
526 | end | ||
527 | function openPlc() | ||
528 | if obj then | ||
529 | ~-~- If the serial port opened,then read/write data by timing | ||
530 | |||
531 | local wri = string.pack(">HHHH",0X0103,0X0200,0X0003,0X0473) | ||
532 | local arr = reading(wri) | ||
533 | ~-~- if arr ~~=nil then | ||
534 | ~-~- if arr[1] ==33 and arr[2] ==v[2][2] and arr[3] ==v[2][3] then | ||
535 | ~-~- local A = arr[4]*256 | ||
536 | ~-~- local B = A+arr[5] | ||
537 | ~-~- addr_setword(v[1],B) | ||
538 | ~-~- end | ||
539 | ~-~- end | ||
540 | |||
541 | else | ||
542 | ~-~-judge if there is a serial object, then initialize and open the serial port | ||
543 | local configs = { | ||
544 | name = 'COM1', ~-~-Select serial port COM1 | ||
545 | mode = 485, ~-~-Communication mode RS485 | ||
546 | baud_rate = 9600, ~-~-Baud rate 9600 | ||
547 | stop_bit = 1, ~-~-stop bit 1 | ||
548 | data_len = 8, ~-~-data length 8 | ||
549 | check_bit = 'NONE', ~-~-no parity | ||
550 | |||
551 | } | ||
552 | obj,err = serial.open(configs) ~-~-Open serial port | ||
553 | if not obj then | ||
554 | print("serial open :failed", err) ~-~- Open serial port failed | ||
555 | end | ||
556 | end | ||
557 | end | ||
558 | |||
559 | function reading(wri) | ||
560 | obj:flush() ~-~- Clear serial port | ||
561 | obj:write(wri) ~-~- Write serial port | ||
562 | print(string.byte(wri,1,#wri)) | ||
563 | obj:flush() ~-~- Clear serial port | ||
564 | local readed =obj:read(9,1000) ~-~- Read 9 bytes, timeout 1 second | ||
565 | if readed and readed ~~= "" then | ||
566 | ~-~- judge that a non-empty string is read | ||
567 | print(string.byte(readed,1,#readed)) | ||
568 | a={string.byte(readed, 1, #readed)} | ||
569 | if nil ~~= a[4] and nil ~~= a[5] and nil ~~= a[6] and nil ~~= a[7] then | ||
570 | a1=a[4]*256+a[5] | ||
571 | a2=a[6]*256+a[7] | ||
572 | addr_setword("@HDW0",a1) | ||
573 | addr_setword("@HDW1",a2) | ||
574 | end | ||
575 | return {string.byte(readed, 1, #readed)} | ||
576 | elseif readed == nil then | ||
577 | print("serial read err:", err or "") | ||
578 | return nil | ||
579 | end | ||
580 | return nil | ||
581 | end | ||
582 | |||
583 | ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~- |