Wiki source code of 1 Communication
Version 33.1 by Ben on 2022/08/22 17:28
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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 | == **V-BOX 和维控 LX3V 串行通信** == | ||
51 | |||
52 | Supported series: WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM | ||
53 | |||
54 | **HMI Settings** | ||
55 | |||
56 | |**Item**|**Settings**|**Note** | ||
57 | |Protocol|WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM| | ||
58 | |Connection|RS422/RS485| | ||
59 | |Baud rate|9600| | ||
60 | |Data bit|7| | ||
61 | |Parity|EVEN| | ||
62 | |Stop bit|1| | ||
63 | |PLC station No.|1| | ||
64 | |||
65 | **Address List** | ||
66 | |||
67 | |**Type**|**Device registers**|**HMI registers**|**Format**|**Range**|**Note** | ||
68 | |(% rowspan="6" %)Bit|X|X|Xo|0~~303237| | ||
69 | |Y|Y|Y o|0~~303237| | ||
70 | |M|M|M d|0~~99999| | ||
71 | |T|T|T d|0~~99999| | ||
72 | |C|C|C d|0~~99999| | ||
73 | |S|S|S d|0~~99999| | ||
74 | |(% rowspan="8" %)Word|X|X|Xo|0~~303237| | ||
75 | |Y|Y|Y o|0~~303237| | ||
76 | |M|M|M d|0~~99999| | ||
77 | |T|T|T d|0~~99999| | ||
78 | |C|C|C d|0~~199| | ||
79 | |D|D|D d|0~~7999| | ||
80 | |S|S|S d|0~~99999| | ||
81 | |SD|SD|SD d|8000~~9999| | ||
82 | |||
83 | **Cable Wiring** | ||
84 | |||
85 | * **RS485** | ||
86 | |||
87 | [[image:image-20220822172124-1.png]] | ||
88 | |||
89 | * **RS422** | ||
90 | |||
91 | [[image:image-20220822172228-2.png]] | ||
92 | |||
93 | |||
94 | **✎Note:** | ||
95 | |||
96 | * HMI COM3 is available in PI8000 series and COM3 is in COM2(hardware PIN 7 and PIN 8) . | ||
97 | * 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. | ||
98 | |||
99 | [[https:~~/~~/drive.google.com/drive/folders/13rgso7oUlatZQN_SNEcJCcN4toEdDPoP?usp=sharing>>url:https://drive.google.com/drive/folders/13rgso7oUlatZQN_SNEcJCcN4toEdDPoP?usp=sharing]] | ||
100 | |||
101 | |||
102 | == **V-BOX and Wecon LX5V serial communication** == | ||
103 | |||
104 | 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. | ||
105 | |||
106 | **Software configuration of PLC** | ||
107 | |||
108 | **1)PLC programming software** | ||
109 | |||
110 | [[image:image-20220822172553-1.png]] | ||
111 | |||
112 | **2)New PLC project** | ||
113 | |||
114 | Click New Project and select the PLC model. | ||
115 | |||
116 | [[image:image-20220822172623-2.png]] | ||
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-20220822172657-3.png]] | ||
131 | |||
132 | **4)Registers list** | ||
133 | |||
134 | [[image:image-20220822172730-4.png]] | ||
135 | |||
136 | **V-BOX software configuration** | ||
137 | |||
138 | **1)HMI programming software** | ||
139 | |||
140 | [[image:image-20220810171237-4.png]] | ||
141 | |||
142 | **2)New HMI project** | ||
143 | |||
144 | Click New Project and select the HMI model. | ||
145 | |||
146 | [[image:image-20220810172010-5.png]] | ||
147 | |||
148 | |||
149 | **3)Set communication port parameters** | ||
150 | |||
151 | 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. | ||
152 | |||
153 | Baud rate:115200 | ||
154 | |||
155 | Data bit:8 | ||
156 | |||
157 | Stop bit:1 | ||
158 | |||
159 | Parity:No verification | ||
160 | |||
161 | [[image:image-20220811104012-1.png]] | ||
162 | |||
163 | |||
164 | **hardware connection** | ||
165 | |||
166 | **1)Hardware wiring diagram** | ||
167 | |||
168 | This example introduces WeconHMI with LX5V PLC to establish communication through serial port. The connection diagram is as follows: | ||
169 | |||
170 | |||
171 | |||
172 | [[image:image-20220811103005-4.png]] | ||
173 | |||
174 | [[image:image-20220811103227-7.png]] | ||
175 | |||
176 | The above are all the steps for establishing serial port communication between Wecon HMI with LX5V PLC. | ||
177 | |||
178 | == **V-BOX and Wecon LX5V-N Ethernet communication** == | ||
179 | |||
180 | 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. | ||
181 | |||
182 | **Software configuration of PLC** | ||
183 | |||
184 | **1)PLC programming software** | ||
185 | |||
186 | [[image:image-20220810164710-1.png]] | ||
187 | |||
188 | **2)New PLC project** | ||
189 | |||
190 | Click New Project and select the PLC model. | ||
191 | |||
192 | [[image:image-20220811115454-1.png]] | ||
193 | |||
194 | **3)Set Ethernet port parameters** | ||
195 | |||
196 | Follow the steps below to configure Ethernet parameters | ||
197 | |||
198 | PLC IP address:192.168.39.200 | ||
199 | |||
200 | default gateway:192.168.39.1 | ||
201 | |||
202 | subnet mask:255.255.255.0 | ||
203 | |||
204 | [[image:image-20220811140530-2.png]] | ||
205 | |||
206 | **4)Registers list** | ||
207 | |||
208 | [[image:image-20220811102219-3.png]] | ||
209 | |||
210 | **HMI software configuration** | ||
211 | |||
212 | **1)HMI programming software** | ||
213 | |||
214 | [[image:image-20220810171237-4.png]] | ||
215 | |||
216 | **2)New HMI project** | ||
217 | |||
218 | Click New Project and select the HMI model. | ||
219 | |||
220 | [[image:image-20220810172010-5.png]] | ||
221 | |||
222 | **3)Set communication port parameters** | ||
223 | |||
224 | 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. | ||
225 | |||
226 | HMI IP address:192.168.39.201 | ||
227 | |||
228 | default gateway:192.168.39.1 | ||
229 | |||
230 | subnet mask:255.255.255.0 | ||
231 | |||
232 | [[image:image-20220811170753-2.png]] | ||
233 | |||
234 | Next, click Communication Settings to configure the IP of the HMI communication object. | ||
235 | |||
236 | [[image:image-20220811163047-1.png]] | ||
237 | |||
238 | **hardware connection** | ||
239 | |||
240 | **1)Hardware wiring diagram** | ||
241 | |||
242 | This example introduces WeconHMI with LX5V-N PLC to establish communication through ethernet. The connection diagram is as follows: | ||
243 | |||
244 | [[image:image-20220811170248-1.png]] | ||
245 | |||
246 | The above are all the steps for establishing ethernet communication between Wecon HMI with LX5V PLC. | ||
247 | |||
248 | (% style="text-align:center" %) | ||
249 | [[image:1624348978863-771.png||queryString="width=812&height=494" height="487" width="800" class="img-thumbnail"]] | ||
250 | |||
251 | = **Rockwell PLC** = | ||
252 | |||
253 | == **Communication with AB CompactLogix L1769** == | ||
254 | |||
255 | ((( | ||
256 | ((( | ||
257 | 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. | ||
258 | ))) | ||
259 | |||
260 | |||
261 | ))) | ||
262 | |||
263 | ((( | ||
264 | (% class="wikigeneratedid" id="HSoftwareconfigurationofPLC" %) | ||
265 | ((( | ||
266 | **Software configuration of PLC** | ||
267 | ))) | ||
268 | |||
269 | (% class="wikigeneratedid" id="HPLCprogrammingsoftware" %) | ||
270 | ((( | ||
271 | **1)PLC programming software** | ||
272 | ))) | ||
273 | |||
274 | [[image:image-20220714162600-1.png]] | ||
275 | |||
276 | (% class="wikigeneratedid" id="HNewPLCproject" %) | ||
277 | ((( | ||
278 | **2)New PLC project** | ||
279 | ))) | ||
280 | |||
281 | ((( | ||
282 | ((( | ||
283 | Click New Project and select the PLC model. | ||
284 | ))) | ||
285 | ))) | ||
286 | |||
287 | ((( | ||
288 | [[image:image-20220714162617-2.png]] | ||
289 | ))) | ||
290 | |||
291 | ((( | ||
292 | |||
293 | |||
294 | [[image:image-20220714162652-4.png]] | ||
295 | ))) | ||
296 | |||
297 | ((( | ||
298 | (% class="wikigeneratedid" id="HSetEthernetparameters" %) | ||
299 | ((( | ||
300 | **3)Set Ethernet parameters** | ||
301 | ))) | ||
302 | |||
303 | ((( | ||
304 | ((( | ||
305 | ((( | ||
306 | Follow the steps below to configure Ethernet parameters | ||
307 | ))) | ||
308 | ))) | ||
309 | ))) | ||
310 | |||
311 | ((( | ||
312 | ((( | ||
313 | ((( | ||
314 | PLC IP address:192.168.40.101 | ||
315 | ))) | ||
316 | ))) | ||
317 | ))) | ||
318 | |||
319 | ((( | ||
320 | ((( | ||
321 | ((( | ||
322 | default gateway:192.168.40.1 | ||
323 | ))) | ||
324 | ))) | ||
325 | ))) | ||
326 | |||
327 | ((( | ||
328 | ((( | ||
329 | ((( | ||
330 | subnet mask:255.255.255.0 | ||
331 | ))) | ||
332 | ))) | ||
333 | ))) | ||
334 | |||
335 | ((( | ||
336 | [[image:image-20220714162713-5.png]] | ||
337 | ))) | ||
338 | |||
339 | ((( | ||
340 | |||
341 | ))) | ||
342 | |||
343 | ((( | ||
344 | (% class="wikigeneratedid" id="HV-boxsoftwareconfiguration" %) | ||
345 | ((( | ||
346 | **V-box software configuration** | ||
347 | ))) | ||
348 | |||
349 | (% class="wikigeneratedid" id="HV-boxprogrammingsoftware" %) | ||
350 | ((( | ||
351 | **1)V-box programming software** | ||
352 | ))) | ||
353 | |||
354 | (% class="wikigeneratedid" %) | ||
355 | ((( | ||
356 | [[image:image-20220714162725-6.png]] | ||
357 | ))) | ||
358 | |||
359 | (% class="wikigeneratedid" id="HConfiguredevicenetwork" %) | ||
360 | ((( | ||
361 | **2)Configure device network** | ||
362 | ))) | ||
363 | |||
364 | ((( | ||
365 | ((( | ||
366 | ((( | ||
367 | 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. | ||
368 | ))) | ||
369 | |||
370 | ((( | ||
371 | In the example below, the IP address of V-Box is configured as 192.168.40.66, and the networking method is 4G connection | ||
372 | ))) | ||
373 | ))) | ||
374 | ))) | ||
375 | |||
376 | ((( | ||
377 | ((( | ||
378 | [[image:image-20220714162737-7.png]] | ||
379 | |||
380 | |||
381 | ))) | ||
382 | ))) | ||
383 | ))) | ||
384 | ))) | ||
385 | |||
386 | (% class="wikigeneratedid" id="HV-netadddevice" %) | ||
387 | ((( | ||
388 | **3)V-net add device** | ||
389 | ))) | ||
390 | ))) | ||
391 | |||
392 | ((( | ||
393 | ((( | ||
394 | 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]] | ||
395 | ))) | ||
396 | |||
397 | |||
398 | ))) | ||
399 | |||
400 | ((( | ||
401 | (% class="wikigeneratedid" id="HSetcommunicationportparameters" %) | ||
402 | ((( | ||
403 | **4)Set communication port parameters** | ||
404 | ))) | ||
405 | |||
406 | ((( | ||
407 | 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. | ||
408 | ))) | ||
409 | |||
410 | [[image:image-20220714162805-9.png]] | ||
411 | ))) | ||
412 | |||
413 | ((( | ||
414 | 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. | ||
415 | ))) | ||
416 | |||
417 | [[image:image-20220714162814-10.png]] | ||
418 | |||
419 | |||
420 | ((( | ||
421 | After adding the protocol Allen-BradleyMicro850_FreeTag, click[[image:image-20220714143838-2.png]]icon add label.[[image:image-20220714162827-11.png]] | ||
422 | ))) | ||
423 | |||
424 | (% class="wikigeneratedid" id="HEngineeringproduction" %) | ||
425 | ((( | ||
426 | **5)Engineering production** | ||
427 | ))) | ||
428 | |||
429 | (% class="wikigeneratedid" %) | ||
430 | ((( | ||
431 | ((( | ||
432 | According to your own needs, use the V-NET client software to edit the required data monitoring points. | ||
433 | ))) | ||
434 | |||
435 | [[image:image-20220714162841-12.png]] | ||
436 | |||
437 | |||
438 | ((( | ||
439 | **hardware connection** | ||
440 | ))) | ||
441 | ))) | ||
442 | |||
443 | ((( | ||
444 | **1)Hardware wiring diagram** | ||
445 | ))) | ||
446 | |||
447 | ((( | ||
448 | ((( | ||
449 | This example introduces Wecon V-box with Allen-Bradley L1769 PLC to establish communication through Ethernet. The connection diagram is as follows: | ||
450 | ))) | ||
451 | |||
452 | [[image:image-20220714162856-13.png]] | ||
453 | |||
454 | ((( | ||
455 | The above are all the steps for establishing Ethernet communication between Wecon V-box with Allen-Bradley L1769 PLC. | ||
456 | |||
457 | |||
458 | == **Allen-Bradley Ethernet DF1** == | ||
459 | |||
460 | [[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]] | ||
461 | |||
462 | |||
463 | = **Siemens PLC** = | ||
464 | ))) | ||
465 | ))) | ||
466 | |||
467 | == **Siemens S7-1200** == | ||
468 | |||
469 | [[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]] | ||
470 | |||
471 | == **Communication with S7-200 Smart** == | ||
472 | |||
473 | [[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]] | ||
474 | |||
475 | = **Delta PLC** = | ||
476 | |||
477 | == **Delta DVP Ethernet** == | ||
478 | |||
479 | [[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]] | ||
480 | |||
481 | == **Delta DVP Serial Protocol** == | ||
482 | |||
483 | [[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]] | ||
484 | |||
485 | == **Communicate with Mitsubishi FX Series** == | ||
486 | |||
487 | [[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]] | ||
488 | |||
489 | == **Communicate with VB inverter** == | ||
490 | |||
491 | [[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]] | ||
492 | |||
493 | == **Omron CP1 Series** == | ||
494 | |||
495 | [[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]] | ||
496 | |||
497 | == **Omron CJ2M** == | ||
498 | |||
499 | [[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]] | ||
500 | |||
501 | = **2 User define protocol** = | ||
502 | |||
503 | 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]] | ||
504 | |||
505 | == **Read the temperature sensor.** == | ||
506 | |||
507 | the commond format is as beliow: | ||
508 | |||
509 | Send commond:01 03 02 00 00 03 04 73 | ||
510 | |||
511 | Feedback commond:01 03 06 07 F7 0E 7E B7 35 | ||
512 | |||
513 | Temperature data:07 F7,desimal = 2039,it means temperature is 20.39℃. | ||
514 | |||
515 | Humidity data:0E 7E,desimal = 3710, it mean humidity is 37.10%RH. | ||
516 | |||
517 | Script Demo: | ||
518 | |||
519 | ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-- | ||
520 | |||
521 | function com.main() | ||
522 | ~-~-dosomething | ||
523 | openPlc() | ||
524 | end | ||
525 | function openPlc() | ||
526 | if obj then | ||
527 | ~-~- If the serial port opened,then read/write data by timing | ||
528 | |||
529 | local wri = string.pack(">HHHH",0X0103,0X0200,0X0003,0X0473) | ||
530 | local arr = reading(wri) | ||
531 | ~-~- if arr ~~=nil then | ||
532 | ~-~- if arr[1] ==33 and arr[2] ==v[2][2] and arr[3] ==v[2][3] then | ||
533 | ~-~- local A = arr[4]*256 | ||
534 | ~-~- local B = A+arr[5] | ||
535 | ~-~- addr_setword(v[1],B) | ||
536 | ~-~- end | ||
537 | ~-~- end | ||
538 | |||
539 | else | ||
540 | ~-~-judge if there is a serial object, then initialize and open the serial port | ||
541 | local configs = { | ||
542 | name = 'COM1', ~-~-Select serial port COM1 | ||
543 | mode = 485, ~-~-Communication mode RS485 | ||
544 | baud_rate = 9600, ~-~-Baud rate 9600 | ||
545 | stop_bit = 1, ~-~-stop bit 1 | ||
546 | data_len = 8, ~-~-data length 8 | ||
547 | check_bit = 'NONE', ~-~-no parity | ||
548 | |||
549 | } | ||
550 | obj,err = serial.open(configs) ~-~-Open serial port | ||
551 | if not obj then | ||
552 | print("serial open :failed", err) ~-~- Open serial port failed | ||
553 | end | ||
554 | end | ||
555 | end | ||
556 | |||
557 | function reading(wri) | ||
558 | obj:flush() ~-~- Clear serial port | ||
559 | obj:write(wri) ~-~- Write serial port | ||
560 | print(string.byte(wri,1,#wri)) | ||
561 | obj:flush() ~-~- Clear serial port | ||
562 | local readed =obj:read(9,1000) ~-~- Read 9 bytes, timeout 1 second | ||
563 | if readed and readed ~~= "" then | ||
564 | ~-~- judge that a non-empty string is read | ||
565 | print(string.byte(readed,1,#readed)) | ||
566 | a={string.byte(readed, 1, #readed)} | ||
567 | if nil ~~= a[4] and nil ~~= a[5] and nil ~~= a[6] and nil ~~= a[7] then | ||
568 | a1=a[4]*256+a[5] | ||
569 | a2=a[6]*256+a[7] | ||
570 | addr_setword("@HDW0",a1) | ||
571 | addr_setword("@HDW1",a2) | ||
572 | end | ||
573 | return {string.byte(readed, 1, #readed)} | ||
574 | elseif readed == nil then | ||
575 | print("serial read err:", err or "") | ||
576 | return nil | ||
577 | end | ||
578 | return nil | ||
579 | end | ||
580 | |||
581 | ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~- |