Wiki source code of 1 Communication

Version 36.1 by Ben on 2022/08/24 11:02

version	line-number	content
25.1	1	= Modbus RTU =
1.1	2
10.1	3	=== V-BOX as master ===
1.1	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" %)
6.1	10	[[image:1624342015914-382.png\|\|height="486" width="800" class="img-thumbnail"]]
1.1	11
10.1	12	=== V-BOX as slave ===
1.1	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" %)
6.1	19	[[image:1624348709622-711.png\|\|queryString="width=809&height=493" height="488" width="800" class="img-thumbnail"]]
1.1	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
24.1	48	= WECON PLC =
1.1	49
31.1	50	== V-BOX 和维控 LX3V 串行通信 ==
	51
20.1	52	Supported series: WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM
1.1	53
20.1	54	HMI Settings
1.1	55
20.1	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\|
1.1	64
20.1	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
31.1	87	[[image:image-20220822172124-1.png]]
20.1	88
	89	* RS422
	90
31.1	91	[[image:image-20220822172228-2.png]]
20.1	92
30.1	93
20.1	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
29.1	102	== V-BOX and Wecon LX5V serial communication ==
28.1	103
34.1	104	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	105
	106	Software configuration of PLC
	107
	108	1）PLC programming software
	109
33.1	110	[[image:image-20220822172553-1.png]]
20.1	111
	112	2）New PLC project
	113
	114	Click New Project and select the PLC model.
	115
33.1	116	[[image:image-20220822172623-2.png]]
20.1	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
33.1	130	[[image:image-20220822172657-3.png]]
20.1	131
	132	4）Registers list
	133
33.1	134	[[image:image-20220822172730-4.png]]
20.1	135
33.1	136	V-BOX software configuration
28.1	137
35.1	138	1）V-BOX programming software
20.1	139
35.1	140	[[image:image-20220824104124-1.png]]
20.1	141
35.1	142	2）V-NET add device
20.1	143
35.1	144	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	145
35.1	146	[[image:image-20220824104909-2.png]]
20.1	147
28.1	148
20.1	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
28.1	163
20.1	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
28.1	170
	171
20.1	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
32.1	178	== V-BOX and Wecon LX5V-N Ethernet communication ==
20.1	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" %)
6.1	249	[[image:1624348978863-771.png\|\|queryString="width=812&height=494" height="487" width="800" class="img-thumbnail"]]
1.1	250
23.1	251	= Rockwell PLC =
22.1	252
27.1	253	== Communication with AB CompactLogix L1769 ==
11.1	254
	255	(((
16.1	256	(((
11.1	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.
16.1	258	)))
15.1	259
	260
11.1	261	)))
	262
	263	(((
15.1	264	(% class="wikigeneratedid" id="HSoftwareconfigurationofPLC" %)
	265	(((
	266	Software configuration of PLC
11.1	267	)))
	268
15.1	269	(% class="wikigeneratedid" id="HPLCprogrammingsoftware" %)
11.1	270	(((
15.1	271	1）PLC programming software
	272	)))
11.1	273
17.1	274	[[image:image-20220714162600-1.png]]
11.1	275
15.1	276	(% class="wikigeneratedid" id="HNewPLCproject" %)
11.1	277	(((
15.1	278	2）New PLC project
11.1	279	)))
	280
	281	(((
16.1	282	(((
15.1	283	Click New Project and select the PLC model.
11.1	284	)))
16.1	285	)))
11.1	286
	287	(((
17.1	288	[[image:image-20220714162617-2.png]]
11.1	289	)))
	290
	291	(((
17.1	292
16.1	293
17.1	294	[[image:image-20220714162652-4.png]]
11.1	295	)))
	296
	297	(((
15.1	298	(% class="wikigeneratedid" id="HSetEthernetparameters" %)
	299	(((
	300	3）Set Ethernet parameters
	301	)))
11.1	302
	303	(((
15.1	304	(((
16.1	305	(((
11.1	306	Follow the steps below to configure Ethernet parameters
	307	)))
15.1	308	)))
16.1	309	)))
11.1	310
	311	(((
15.1	312	(((
16.1	313	(((
11.1	314	PLC IP address：192.168.40.101
	315	)))
15.1	316	)))
16.1	317	)))
11.1	318
	319	(((
15.1	320	(((
16.1	321	(((
11.1	322	default gateway：192.168.40.1
	323	)))
15.1	324	)))
16.1	325	)))
11.1	326
	327	(((
15.1	328	(((
16.1	329	(((
11.1	330	subnet mask：255.255.255.0
	331	)))
15.1	332	)))
16.1	333	)))
11.1	334
	335	(((
17.1	336	[[image:image-20220714162713-5.png]]
11.1	337	)))
	338
	339	(((
	340
	341	)))
	342
	343	(((
15.1	344	(% class="wikigeneratedid" id="HV-boxsoftwareconfiguration" %)
	345	(((
	346	V-box software configuration
	347	)))
11.1	348
15.1	349	(% class="wikigeneratedid" id="HV-boxprogrammingsoftware" %)
	350	(((
	351	1）V-box programming software
	352	)))
11.1	353
15.1	354	(% class="wikigeneratedid" %)
	355	(((
17.1	356	[[image:image-20220714162725-6.png]]
15.1	357	)))
11.1	358
15.1	359	(% class="wikigeneratedid" id="HConfiguredevicenetwork" %)
	360	(((
	361	2）Configure device network
	362	)))
11.1	363
	364	(((
15.1	365	(((
16.1	366	(((
11.1	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	)))
16.1	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
15.1	372	)))
16.1	373	)))
	374	)))
11.1	375
	376	(((
15.1	377	(((
17.1	378	[[image:image-20220714162737-7.png]]
16.1	379
	380
11.1	381	)))
	382	)))
	383	)))
	384	)))
	385
15.1	386	(% class="wikigeneratedid" id="HV-netadddevice" %)
11.1	387	(((
15.1	388	3）V-net add device
11.1	389	)))
15.1	390	)))
11.1	391
	392	(((
16.1	393	(((
21.1	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]]
11.1	395	)))
	396
	397
	398	)))
	399
	400	(((
15.1	401	(% class="wikigeneratedid" id="HSetcommunicationportparameters" %)
	402	(((
	403	4）Set communication port parameters
	404	)))
11.1	405
16.1	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.
11.1	408	)))
	409
17.1	410	[[image:image-20220714162805-9.png]]
16.1	411	)))
	412
	413	(((
11.1	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.
16.1	415	)))
11.1	416
17.1	417	[[image:image-20220714162814-10.png]]
11.1	418
	419
16.1	420	(((
22.1	421	After adding the protocol Allen-BradleyMicro850_FreeTag, click[[image:image-20220714143838-2.png]]icon add label.[[image:image-20220714162827-11.png]]
16.1	422	)))
14.1	423
16.1	424	(% class="wikigeneratedid" id="HEngineeringproduction" %)
	425	(((
	426	5）Engineering production
	427	)))
14.1	428
16.1	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	)))
14.1	434
17.1	435	[[image:image-20220714162841-12.png]]
14.1	436
16.1	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
17.1	452	[[image:image-20220714162856-13.png]]
16.1	453
	454	(((
	455	The above are all the steps for establishing Ethernet communication between Wecon V-box with Allen-Bradley L1769 PLC.
26.1	456
36.1	457	== MicroLogix ==
26.1	458
36.1	459	MicroLogix 1000/1100/1200/1400/1500; SLC 5/03 5/04 5/05 PLC-5
	460
	461	HMI Settings
	462
	463	\|Item\|Settings\|Note
	464	\|Protocol\|Allen-Bradlley MicroLogix\|
	465	\|Connection\|RS232\|
	466	\|Baud rate\|19200\|
	467	\|Data bit\|8\|
	468	\|Parity\|None\|
	469	\|Stop bit\|1\|
	470	\|PLC station No.\|1\|
	471
	472	Address List
	473
	474	\|Type\|Device registers\|Format\|Range\|Note
	475	\|(% rowspan="5" %)Bit\|I\|I d.d\|0.0~~255.15\|
	476	\|O\|O d.d\|0.0~~255.15\|
	477	\|B\|B nnhh.dd\|0.0~~ffff.15\|nn: block number (hex)
	478	\|S\|S d.d\|0.0~~255.15\|
	479	\|N\|N nnhh.dd\|0.0~~ffff.15\|nn: block number (hex)
	480	\|(% rowspan="9" %)Word\|S\|S d\|0~~255\|
	481	\|TS\|TS nnhh\|0~~ffff\|(% rowspan="8" %)nn: block number (hex)
	482	\|TP\|TP nnhh\|0~~ffff
	483	\|CS\|CS nnhh\|0~~ffff
	484	\|CP\|CP nnhh\|0~~ffff
	485	\|N\|N nnhh\|0~~ffff
	486	\|C\|C nnhh\|0~~ffff
	487	\|T\|T nnhh\|0~~ffff
	488	\|R\|R nnhh\|0~~ffff
	489
	490	Cable Wiring
	491
	492
	493
	494
26.1	495	== Allen-Bradley Ethernet DF1 ==
	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/Allen-Bradley%20Ethernet%20DF1.zip]]
	498
	499
	500	= Siemens PLC =
16.1	501	)))
	502	)))
	503
10.1	504	== Siemens S7-1200 ==
1.1	505
	506	[[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]]
	507
10.1	508	== Communication with S7-200 Smart ==
1.1	509
	510	[[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]]
	511
26.1	512	= Delta PLC =
	513
10.1	514	== Delta DVP Ethernet ==
1.1	515
	516	[[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]]
	517
10.1	518	== Delta DVP Serial Protocol ==
1.1	519
	520	[[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]]
	521
10.1	522	== Communicate with Mitsubishi FX Series ==
6.1	523
	524	[[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]]
	525
10.1	526	== Communicate with VB inverter ==
6.1	527
	528	[[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]]
	529
10.1	530	== Omron CP1 Series ==
7.1	531
8.1	532	[[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	533
10.1	534	== Omron CJ2M ==
7.1	535
8.1	536	[[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	537
1.1	538	= 2 User define protocol =
	539
19.1	540	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	541
10.1	542	== Read the temperature sensor. ==
1.1	543
	544	the commond format is as beliow:
	545
	546	Send commond:01 03 02 00 00 03 04 73
	547
	548	Feedback commond:01 03 06 07 F7 0E 7E B7 35
	549
	550	Temperature data:07 F7,desimal = 2039,it means temperature is 20.39℃.
	551
	552	Humidity data:0E 7E,desimal = 3710, it mean humidity is 37.10%RH.
	553
	554	Script Demo:
	555
	556	~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~--
	557
	558	function com.main()
	559	~-~-dosomething
	560	openPlc()
	561	end
	562	function openPlc()
	563	if obj then
	564	~-~- If the serial port opened,then read/write data by timing
	565
	566	local wri = string.pack(">HHHH",0X0103,0X0200,0X0003,0X0473)
	567	local arr = reading(wri)
	568	~-~- if arr ~~=nil then
	569	~-~- if arr[1] ==33 and arr[2] ==v[2][2] and arr[3] ==v[2][3] then
	570	~-~- local A = arr[4]*256
	571	~-~- local B = A+arr[5]
	572	~-~- addr_setword(v[1],B)
	573	~-~- end
	574	~-~- end
	575
	576	else
	577	~-~-judge if there is a serial object, then initialize and open the serial port
	578	local configs = {
	579	name = 'COM1', ~-~-Select serial port COM1
	580	mode = 485, ~-~-Communication mode RS485
	581	baud_rate = 9600, ~-~-Baud rate 9600
	582	stop_bit = 1, ~-~-stop bit 1
	583	data_len = 8, ~-~-data length 8
	584	check_bit = 'NONE', ~-~-no parity
	585
	586	}
	587	obj,err = serial.open(configs) ~-~-Open serial port
	588	if not obj then
	589	print("serial open :failed", err) ~-~- Open serial port failed
	590	end
	591	end
	592	end
	593
	594	function reading(wri)
	595	obj:flush() ~-~- Clear serial port
	596	obj:write(wri) ~-~- Write serial port
	597	print(string.byte(wri,1,#wri))
	598	obj:flush() ~-~- Clear serial port
	599	local readed =obj:read(9,1000) ~-~- Read 9 bytes, timeout 1 second
	600	if readed and readed ~~= "" then
	601	~-~- judge that a non-empty string is read
	602	print(string.byte(readed,1,#readed))
	603	a={string.byte(readed, 1, #readed)}
	604	if nil ~~= a[4] and nil ~~= a[5] and nil ~~= a[6] and nil ~~= a[7] then
	605	a1=a[4]*256+a[5]
	606	a2=a[6]*256+a[7]
	607	addr_setword("@HDW0",a1)
	608	addr_setword("@HDW1",a2)
	609	end
	610	return {string.byte(readed, 1, #readed)}
	611	elseif readed == nil then
	612	print("serial read err:", err or "")
	613	return nil
	614	end
	615	return nil
	616	end
	617
	618	~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-

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