Wiki source code of 1 Communication

Version 53.1 by Ben on 2022/08/24 11:35

version	line-number	content
52.1	1	= (% style="color:inherit; font-family:inherit" %)WECON PLC(%%) =
1.1	2
44.1	3	== LX3V 串行通信 ==
31.1	4
20.1	5	Supported series: WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM
1.1	6
20.1	7	HMI Settings
1.1	8
20.1	9	\|Item\|Settings\|Note
	10	\|Protocol\|WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM\|
	11	\|Connection\|RS422/RS485\|
	12	\|Baud rate\|9600\|
	13	\|Data bit\|7\|
	14	\|Parity\|EVEN\|
	15	\|Stop bit\|1\|
	16	\|PLC station No.\|1\|
1.1	17
20.1	18	Address List
	19
	20	\|Type\|Device registers\|HMI registers\|Format\|Range\|Note
	21	\|(% rowspan="6" %)Bit\|X\|X\|Xo\|0~~303237\|
	22	\|Y\|Y\|Y o\|0~~303237\|
	23	\|M\|M\|M d\|0~~99999\|
	24	\|T\|T\|T d\|0~~99999\|
	25	\|C\|C\|C d\|0~~99999\|
	26	\|S\|S\|S d\|0~~99999\|
	27	\|(% rowspan="8" %)Word\|X\|X\|Xo\|0~~303237\|
	28	\|Y\|Y\|Y o\|0~~303237\|
	29	\|M\|M\|M d\|0~~99999\|
	30	\|T\|T\|T d\|0~~99999\|
	31	\|C\|C\|C d\|0~~199\|
	32	\|D\|D\|D d\|0~~7999\|
	33	\|S\|S\|S d\|0~~99999\|
	34	\|SD\|SD\|SD d\|8000~~9999\|
	35
	36	Cable Wiring
	37
	38	* RS485
	39
31.1	40	[[image:image-20220822172124-1.png]]
20.1	41
	42	* RS422
	43
31.1	44	[[image:image-20220822172228-2.png]]
20.1	45
30.1	46
20.1	47	✎Note:
	48
	49	* HMI COM3 is available in PI8000 series and COM3 is in COM2(hardware PIN 7 and PIN 8) .
	50	* 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.
	51
	52	[[https:~~/~~/drive.google.com/drive/folders/13rgso7oUlatZQN_SNEcJCcN4toEdDPoP?usp=sharing>>url:https://drive.google.com/drive/folders/13rgso7oUlatZQN_SNEcJCcN4toEdDPoP?usp=sharing]]
	53
43.1	54	== LX5V serial communication ==
28.1	55
34.1	56	This example introduces the establishment of serial port communication between Wecon V-BOX and LX5V. It is introduced through three parts: PLC software configuration, HMI software configuration, and hardware wiring.
20.1	57
	58	Software configuration of PLC
	59
	60	1）PLC programming software
	61
33.1	62	[[image:image-20220822172553-1.png]]
20.1	63
	64	2）New PLC project
	65
	66	Click New Project and select the PLC model.
	67
33.1	68	[[image:image-20220822172623-2.png]]
20.1	69
	70	3）Set Serial port parameters
	71
	72	Follow the steps below to configure Serial port parameters
	73
	74	Baud rate：115200
	75
	76	Data bit：8
	77
	78	Stop bit：1
	79
	80	Parity：No verification
	81
33.1	82	[[image:image-20220822172657-3.png]]
20.1	83
	84	4）Registers list
	85
33.1	86	[[image:image-20220822172730-4.png]]
20.1	87
33.1	88	V-BOX software configuration
28.1	89
35.1	90	1）V-BOX programming software
20.1	91
35.1	92	[[image:image-20220824104124-1.png]]
20.1	93
35.1	94	2）V-NET add device
20.1	95
35.1	96	Open V-NET 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 access key, password and remark, to add the device.
20.1	97
35.1	98	[[image:image-20220824104909-2.png]]
20.1	99
28.1	100
20.1	101	3）Set communication port parameters
	102
	103	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.
	104
	105	Baud rate：115200
	106
	107	Data bit：8
	108
	109	Stop bit：1
	110
	111	Parity：No verification
	112
	113	[[image:image-20220811104012-1.png]]
	114
28.1	115
20.1	116	hardware connection
	117
	118	1）Hardware wiring diagram
	119
	120	This example introduces WeconHMI with LX5V PLC to establish communication through serial port. The connection diagram is as follows:
	121
28.1	122
	123
20.1	124	[[image:image-20220811103005-4.png]]
	125
	126	[[image:image-20220811103227-7.png]]
	127
	128	The above are all the steps for establishing serial port communication between Wecon HMI with LX5V PLC.
	129
45.1	130	== LX5V-N Ethernet communication ==
20.1	131
	132	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.
	133
	134	Software configuration of PLC
	135
	136	1）PLC programming software
	137
	138	[[image:image-20220810164710-1.png]]
	139
	140	2）New PLC project
	141
	142	Click New Project and select the PLC model.
	143
	144	[[image:image-20220811115454-1.png]]
	145
	146	3）Set Ethernet port parameters
	147
	148	Follow the steps below to configure Ethernet parameters
	149
	150	PLC IP address：192.168.39.200
	151
	152	default gateway：192.168.39.1
	153
	154	subnet mask：255.255.255.0
	155
	156	[[image:image-20220811140530-2.png]]
	157
	158	4）Registers list
	159
	160	[[image:image-20220811102219-3.png]]
	161
	162	HMI software configuration
	163
	164	1）HMI programming software
	165
	166	[[image:image-20220810171237-4.png]]
	167
	168	2）New HMI project
	169
	170	Click New Project and select the HMI model.
	171
	172	[[image:image-20220810172010-5.png]]
	173
	174	3）Set communication port parameters
	175
	176	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.
	177
	178	HMI IP address：192.168.39.201
	179
	180	default gateway：192.168.39.1
	181
	182	subnet mask：255.255.255.0
	183
	184	[[image:image-20220811170753-2.png]]
	185
	186	Next, click Communication Settings to configure the IP of the HMI communication object.
	187
	188	[[image:image-20220811163047-1.png]]
	189
	190	hardware connection
	191
	192	1）Hardware wiring diagram
	193
	194	This example introduces WeconHMI with LX5V-N PLC to establish communication through ethernet. The connection diagram is as follows:
	195
	196	[[image:image-20220811170248-1.png]]
	197
	198	The above are all the steps for establishing ethernet communication between Wecon HMI with LX5V PLC.
	199
	200	(% style="text-align:center" %)
6.1	201	[[image:1624348978863-771.png\|\|queryString="width=812&height=494" height="487" width="800" class="img-thumbnail"]]
1.1	202
23.1	203	= Rockwell PLC =
22.1	204
37.1	205	== (% id="cke_bm_5621S" style="display:none" %) (%%)MicroLogix ==
	206
	207	MicroLogix 1000/1100/1200/1400/1500; SLC 5/03 5/04 5/05 PLC-5
	208
	209	HMI Settings
	210
	211	\|Item\|Settings\|Note
	212	\|Protocol\|Allen-Bradlley MicroLogix\|
	213	\|Connection\|RS232\|
	214	\|Baud rate\|19200\|
	215	\|Data bit\|8\|
	216	\|Parity\|None\|
	217	\|Stop bit\|1\|
	218	\|PLC station No.\|1\|
	219
	220	Address List
	221
	222	\|Type\|Device registers\|Format\|Range\|Note
	223	\|(% rowspan="5" %)Bit\|I\|I d.d\|0.0~~255.15\|
	224	\|O\|O d.d\|0.0~~255.15\|
	225	\|B\|B nnhh.dd\|0.0~~ffff.15\|nn: block number (hex)
	226	\|S\|S d.d\|0.0~~255.15\|
	227	\|N\|N nnhh.dd\|0.0~~ffff.15\|nn: block number (hex)
	228	\|(% rowspan="9" %)Word\|S\|S d\|0~~255\|
	229	\|TS\|TS nnhh\|0~~ffff\|(% rowspan="8" %)nn: block number (hex)
	230	\|TP\|TP nnhh\|0~~ffff
	231	\|CS\|CS nnhh\|0~~ffff
	232	\|CP\|CP nnhh\|0~~ffff
	233	\|N\|N nnhh\|0~~ffff
	234	\|C\|C nnhh\|0~~ffff
	235	\|T\|T nnhh\|0~~ffff
	236	\|R\|R nnhh\|0~~ffff
	237
	238	Cable Wiring
	239
	240	[[image:image-20220824110724-1.png]]
	241
	242
	243
	244	== CompactLogix ==
	245
11.1	246	(((
16.1	247	(((
38.1	248	This example introduces the establishment of Ethernet communication between Wecon V-box and CompactLogix L1769. It is introduced through three parts: PLC software configuration, V-box software configuration, and hardware wiring.
16.1	249	)))
11.1	250	)))
	251
	252	(((
15.1	253	(% class="wikigeneratedid" id="HSoftwareconfigurationofPLC" %)
	254	(((
	255	Software configuration of PLC
11.1	256	)))
	257
15.1	258	(% class="wikigeneratedid" id="HPLCprogrammingsoftware" %)
11.1	259	(((
15.1	260	1）PLC programming software
	261	)))
11.1	262
17.1	263	[[image:image-20220714162600-1.png]]
11.1	264
15.1	265	(% class="wikigeneratedid" id="HNewPLCproject" %)
11.1	266	(((
15.1	267	2）New PLC project
11.1	268	)))
	269
	270	(((
16.1	271	(((
15.1	272	Click New Project and select the PLC model.
11.1	273	)))
16.1	274	)))
11.1	275
	276	(((
17.1	277	[[image:image-20220714162617-2.png]]
11.1	278	)))
	279
	280	(((
17.1	281
16.1	282
17.1	283	[[image:image-20220714162652-4.png]]
11.1	284	)))
	285
	286	(((
15.1	287	(% class="wikigeneratedid" id="HSetEthernetparameters" %)
	288	(((
	289	3）Set Ethernet parameters
	290	)))
11.1	291
	292	(((
15.1	293	(((
16.1	294	(((
11.1	295	Follow the steps below to configure Ethernet parameters
	296	)))
15.1	297	)))
16.1	298	)))
11.1	299
	300	(((
15.1	301	(((
16.1	302	(((
11.1	303	PLC IP address：192.168.40.101
	304	)))
15.1	305	)))
16.1	306	)))
11.1	307
	308	(((
15.1	309	(((
16.1	310	(((
11.1	311	default gateway：192.168.40.1
	312	)))
15.1	313	)))
16.1	314	)))
11.1	315
	316	(((
15.1	317	(((
16.1	318	(((
11.1	319	subnet mask：255.255.255.0
	320	)))
15.1	321	)))
16.1	322	)))
11.1	323
	324	(((
17.1	325	[[image:image-20220714162713-5.png]]
11.1	326	)))
	327
	328	(((
	329
	330	)))
	331
	332	(((
15.1	333	(% class="wikigeneratedid" id="HV-boxsoftwareconfiguration" %)
	334	(((
	335	V-box software configuration
	336	)))
11.1	337
15.1	338	(% class="wikigeneratedid" id="HV-boxprogrammingsoftware" %)
	339	(((
	340	1）V-box programming software
	341	)))
11.1	342
15.1	343	(% class="wikigeneratedid" %)
	344	(((
17.1	345	[[image:image-20220714162725-6.png]]
15.1	346	)))
11.1	347
15.1	348	(% class="wikigeneratedid" id="HConfiguredevicenetwork" %)
	349	(((
	350	2）Configure device network
	351	)))
11.1	352
	353	(((
15.1	354	(((
16.1	355	(((
11.1	356	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.
	357	)))
16.1	358
	359	(((
	360	In the example below, the IP address of V-Box is configured as 192.168.40.66, and the networking method is 4G connection
15.1	361	)))
16.1	362	)))
	363	)))
11.1	364
	365	(((
15.1	366	(((
17.1	367	[[image:image-20220714162737-7.png]]
16.1	368
	369
11.1	370	)))
	371	)))
	372	)))
	373	)))
	374
15.1	375	(% class="wikigeneratedid" id="HV-netadddevice" %)
11.1	376	(((
15.1	377	3）V-net add device
11.1	378	)))
15.1	379	)))
11.1	380
	381	(((
16.1	382	(((
21.1	383	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]]
11.1	384	)))
	385
	386
	387	)))
	388
	389	(((
15.1	390	(% class="wikigeneratedid" id="HSetcommunicationportparameters" %)
	391	(((
	392	4）Set communication port parameters
	393	)))
11.1	394
16.1	395	(((
	396	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.
11.1	397	)))
	398
17.1	399	[[image:image-20220714162805-9.png]]
16.1	400	)))
	401
	402	(((
11.1	403	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.
16.1	404	)))
11.1	405
17.1	406	[[image:image-20220714162814-10.png]]
11.1	407
	408
16.1	409	(((
22.1	410	After adding the protocol Allen-BradleyMicro850_FreeTag, click[[image:image-20220714143838-2.png]]icon add label.[[image:image-20220714162827-11.png]]
16.1	411	)))
14.1	412
16.1	413	(% class="wikigeneratedid" id="HEngineeringproduction" %)
	414	(((
	415	5）Engineering production
	416	)))
14.1	417
16.1	418	(% class="wikigeneratedid" %)
	419	(((
	420	(((
	421	According to your own needs, use the V-NET client software to edit the required data monitoring points.
	422	)))
14.1	423
17.1	424	[[image:image-20220714162841-12.png]]
14.1	425
16.1	426
	427	(((
	428	hardware connection
	429	)))
	430	)))
	431
	432	(((
	433	1）Hardware wiring diagram
	434	)))
	435
	436	(((
	437	(((
	438	This example introduces Wecon V-box with Allen-Bradley L1769 PLC to establish communication through Ethernet. The connection diagram is as follows:
	439	)))
	440
17.1	441	[[image:image-20220714162856-13.png]]
16.1	442
	443	(((
41.1	444	The above are all the steps for establishing Ethernet communication between Wecon V-box with CompactLogix L1769 PLC.
26.1	445
	446
	447	== Allen-Bradley Ethernet DF1 ==
	448
	449	[[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]]
	450
	451
	452	= Siemens PLC =
16.1	453	)))
	454	)))
	455
10.1	456	== Siemens S7-1200 ==
1.1	457
	458	[[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]]
	459
10.1	460	== Communication with S7-200 Smart ==
1.1	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/Communication%20with%20S7-200%20Smart.zip]]
	463
26.1	464	= Delta PLC =
	465
10.1	466	== Delta DVP Ethernet ==
1.1	467
	468	[[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]]
	469
10.1	470	== Delta DVP Serial Protocol ==
1.1	471
	472	[[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]]
	473
47.1	474	= Mitsubishi PLC =
	475
10.1	476	== Communicate with Mitsubishi FX Series ==
6.1	477
	478	[[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]]
	479
48.1	480	= Omron PLC =
	481
10.1	482	== Omron CP1 Series ==
7.1	483
8.1	484	[[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]]
7.1	485
10.1	486	== Omron CJ2M ==
7.1	487
8.1	488	[[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]]
7.1	489
50.1	490	= Modbus RTU =
	491
53.1	492	== V-BOX as master ==
50.1	493
	494	Select the protocol “(% class="mark" %)Modbus RTU Slave(All Fuction)”,
	495
	496	(% class="mark" %)then set BaudRate,Port,Stop Bit,Data Bit,Parity
	497
	498	(% style="text-align:center" %)
	499	[[image:1624342015914-382.png\|\|height="486" width="800" class="img-thumbnail"]]
	500
53.1	501	== V-BOX as slave ==
50.1	502
	503	Select the protocol “(% class="mark" %)Modbus RTU Master”,
	504
	505	(% class="mark" %)then set BaudRate,Port,Stop Bit,Data Bit,Parity
	506
	507	(% style="text-align:center" %)
	508	[[image:1624348709622-711.png\|\|queryString="width=809&height=493" height="488" width="800" class="img-thumbnail"]]
	509
	510	Address List
	511
	512	(% class="table-bordered" %)
	513	\|Type\|Register\|Function code & Description
	514	\|(% rowspan="11" %)Word\|(% rowspan="3" %)3\|04 (read input register: read current binary value in one or more input registers)
	515	\|06 (write single register: write a binary value to a holding register)
	516	\|10 (write values to multiple addresses )
	517	\|(% rowspan="3" %)4\|03 (read holding register: read current binary value in one or more holding registers)
	518	\|06 (write single register: write a binary value to a holding register)
	519	\|10 (write values to multiple addresses )
	520	\|(% rowspan="3" %)W6\|03 (read holding register: read current binary value in one or more holding registers)
	521	\|06 (write single register: write a binary value to a holding register)
	522	\|10 (write values to multiple addresses )
	523	\|(% rowspan="2" %)W16\|03 (read holding register: read current binary value in one or more holding registers)
	524	\|10 (write values to multiple addresses )
	525	\|(% rowspan="11" %)Bit\|(% rowspan="3" %)0\|01 (Read coil state)
	526	\|05 (Force a single coil to force the on/off state of a logic coil)
	527	\|0F (Write multiple bits, ie write continuously)
	528	\|(% rowspan="3" %)1\|02 (Read the input state)
	529	\|05 (Force a single coil to force the on/off state of a logic coil)
	530	\|0F (Write multiple bits)
	531	\|(% rowspan="3" %)W5\|01 (Read coil state to obtain the current state of a set of logic coils)
	532	\|05 (Force a single coil to force the on/off state of a logic coil)
	533	\|0F (Write multiple bits)
	534	\|(% rowspan="2" %)W15\|01 (Read coil state to obtain the current state of a set of logic coils)
	535	\|0F (Write multiple bits)
	536
52.1	537	== Communicate with VB inverter ==
	538
	539	[[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]]
	540
51.1	541	= User define protocol =
1.1	542
19.1	543	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]]
1.1	544
10.1	545	== Read the temperature sensor. ==
1.1	546
	547	the commond format is as beliow:
	548
	549	Send commond:01 03 02 00 00 03 04 73
	550
	551	Feedback commond:01 03 06 07 F7 0E 7E B7 35
	552
	553	Temperature data:07 F7,desimal = 2039,it means temperature is 20.39℃.
	554
	555	Humidity data:0E 7E,desimal = 3710, it mean humidity is 37.10%RH.
	556
	557	Script Demo:
	558
	559	~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~--
	560
	561	function com.main()
	562	~-~-dosomething
	563	openPlc()
	564	end
	565	function openPlc()
	566	if obj then
	567	~-~- If the serial port opened,then read/write data by timing
	568
	569	local wri = string.pack(">HHHH",0X0103,0X0200,0X0003,0X0473)
	570	local arr = reading(wri)
	571	~-~- if arr ~~=nil then
	572	~-~- if arr[1] ==33 and arr[2] ==v[2][2] and arr[3] ==v[2][3] then
	573	~-~- local A = arr[4]*256
	574	~-~- local B = A+arr[5]
	575	~-~- addr_setword(v[1],B)
	576	~-~- end
	577	~-~- end
	578
	579	else
	580	~-~-judge if there is a serial object, then initialize and open the serial port
	581	local configs = {
	582	name = 'COM1', ~-~-Select serial port COM1
	583	mode = 485, ~-~-Communication mode RS485
	584	baud_rate = 9600, ~-~-Baud rate 9600
	585	stop_bit = 1, ~-~-stop bit 1
	586	data_len = 8, ~-~-data length 8
	587	check_bit = 'NONE', ~-~-no parity
	588
	589	}
	590	obj,err = serial.open(configs) ~-~-Open serial port
	591	if not obj then
	592	print("serial open :failed", err) ~-~- Open serial port failed
	593	end
	594	end
	595	end
	596
	597	function reading(wri)
	598	obj:flush() ~-~- Clear serial port
	599	obj:write(wri) ~-~- Write serial port
	600	print(string.byte(wri,1,#wri))
	601	obj:flush() ~-~- Clear serial port
	602	local readed =obj:read(9,1000) ~-~- Read 9 bytes, timeout 1 second
	603	if readed and readed ~~= "" then
	604	~-~- judge that a non-empty string is read
	605	print(string.byte(readed,1,#readed))
	606	a={string.byte(readed, 1, #readed)}
	607	if nil ~~= a[4] and nil ~~= a[5] and nil ~~= a[6] and nil ~~= a[7] then
	608	a1=a[4]*256+a[5]
	609	a2=a[6]*256+a[7]
	610	addr_setword("@HDW0",a1)
	611	addr_setword("@HDW1",a2)
	612	end
	613	return {string.byte(readed, 1, #readed)}
	614	elseif readed == nil then
	615	print("serial read err:", err or "")
	616	return nil
	617	end
	618	return nil
	619	end
	620
	621	~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-

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