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Changes for page 08 Communication

Last modified by Iris on 2025/07/24 15:23
From version 4.16
edited by Stone Wu
on 2022/07/07 15:37
Change comment: There is no comment for this version
To version 9.1
edited by Stone Wu
on 2022/08/30 09:58
Change comment: There is no comment for this version

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Parent
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1 -Servo.1 User Manual.02 VD2 SA Series.WebHome
1 +Servo.Manual.02 VD2 SA Series.WebHome
Content
... ... @@ -11,7 +11,7 @@
11 11  
12 12  Figure 8-1 The position of RS485 communication port of VD2B drive
13 13  
14 -For the position of the RS485 communication port of other models, see __[[4.5 Communication signal wiring>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/04%20Wiring/#HCommunicationsignalwiring]]__.
14 +For the position of the RS485 communication port of other models, see __[[4.5 Communication signal wiring>>https://docs.we-con.com.cn/bin/view/Servo/Manual/02%20VD2%20SA%20Series/04%20Wiring/#HCommunicationsignalwiring]]__.
15 15  
16 16  The servo drive adopts RS485 half-duplex communication mode. The 485 bus should adopt the hand-in-hand structure instead of the star structure or the bifurcated structure. The star structure or bifurcation structure will produce reflected signals, which will affect the 485 communication.
17 17  
... ... @@ -45,7 +45,7 @@
45 45  The VD2 series servo drives currently support the RTU communication format. The typical data frame format is shown in the table.
46 46  
47 47  (% class="table-bordered" %)
48 -|(% rowspan="2" style="text-align:center; vertical-align:middle; width:425px" %)**There should be a message interval not less than 3.5 characters at the beginning**|(% style="text-align:center; vertical-align:middle; width:166px" %)**Address**|(% style="text-align:center; vertical-align:middle; width:189px" %)**Function code**|(% style="text-align:center; vertical-align:middle; width:155px" %)**Data**|(% style="text-align:center; vertical-align:middle; width:158px" %)**CRC check code**
48 +|=(% rowspan="2" scope="row" style="text-align: center; vertical-align: middle; width: 425px;" %)**There should be a message interval not less than 3.5 characters at the beginning**|=(% style="text-align: center; vertical-align: middle; width: 166px;" %)**Address**|=(% style="text-align: center; vertical-align: middle; width: 189px;" %)**Function code**|=(% style="text-align: center; vertical-align: middle; width: 155px;" %)**Data**|=(% style="text-align: center; vertical-align: middle; width: 158px;" %)**CRC check code**
49 49  |(% style="text-align:center; vertical-align:middle; width:166px" %)1 byte|(% style="text-align:center; vertical-align:middle; width:189px" %)1 byte|(% style="text-align:center; vertical-align:middle; width:155px" %)N bytes|(% style="text-align:center; vertical-align:middle; width:158px" %)2 bytes
50 50  
51 51  == **Description of supported function codes** ==
... ... @@ -53,7 +53,7 @@
53 53  The host reads and writes data to the servo through Modbus RTU format (03, 06 function codes). The corresponding Modbus function codes are as follows:
54 54  
55 55  (% class="table-bordered" %)
56 -|(% style="text-align:center; vertical-align:middle" %)**Operate**|(% style="text-align:center; vertical-align:middle" %)**Command code**
56 +|=(% style="text-align: center; vertical-align: middle;" %)**Operate**|=(% style="text-align: center; vertical-align: middle;" %)**Command code**
57 57  |(% style="text-align:center; vertical-align:middle" %)Read 16-bit/32-bit function code|(% style="text-align:center; vertical-align:middle" %)0x03
58 58  |(% style="text-align:center; vertical-align:middle" %)Write 16-bit function code|(% style="text-align:center; vertical-align:middle" %)0x06
59 59  |(% style="text-align:center; vertical-align:middle" %)Write 32-bit function code|(% style="text-align:center; vertical-align:middle" %)0x10
... ... @@ -68,9 +68,10 @@
68 68  
69 69  Correct response format:
70 70  
71 -|(% rowspan="2" %)**Address**|(% rowspan="2" %)**Function code**|(% rowspan="2" %)**Number of bytes of returned data**|(% colspan="2" %)**Register 1**|(% rowspan="2" %)**…**|(% rowspan="2" %)**CRC check code**
72 -|**high byte**|**low byte**
73 -|1 byte|03|1 byte|1 byte|1 byte|…|2 bytes
71 +(% style="width:1055px" %)
72 +|(% rowspan="2" %)**Address**|(% rowspan="2" %)**Function code**|(% rowspan="2" style="width:279px" %)**Number of bytes of returned data**|(% colspan="2" style="width:274px" %)**Register 1**|(% rowspan="2" style="width:98px" %)**…**|(% rowspan="2" %)**CRC check code**
73 +|(% style="width:160px" %)**high byte**|(% style="width:114px" %)**low byte**
74 +|1 byte|03|(% style="width:279px" %)1 byte|(% style="width:160px" %)1 byte|(% style="width:114px" %)1 byte|(% style="width:98px" %)…|2 bytes
74 74  
75 75  **Write function code: 0x06**
76 76  
... ... @@ -90,8 +90,8 @@
90 90  
91 91  If the setting is successful, the original is returned
92 92  
93 -|(% rowspan="2" %)**There should be a message interval not less than 3.5 characters at the beginning**|**Address**|**Function code**|**Data**|**CRC check code**
94 -|1 byte|1 byte|N bytes|2 bytes
94 +|(% rowspan="2" style="width:551px" %)**There should be a message interval not less than 3.5 characters at the beginning**|(% style="width:114px" %)**Address**|(% style="width:127px" %)**Function code**|(% style="width:104px" %)**Data**|(% style="width:180px" %)**CRC check code**
95 +|(% style="width:114px" %)1 byte|(% style="width:127px" %)1 byte|(% style="width:104px" %)N bytes|(% style="width:180px" %)2 bytes
95 95  
96 96  (% style="color:inherit; font-family:inherit; font-size:26px" %)**CRC check**
97 97  
... ... @@ -150,13 +150,13 @@
150 150  == **Error response frame** ==
151 151  
152 152  (% class="table-bordered" %)
153 -|(% style="text-align:center; vertical-align:middle" %)**Address**|(% style="text-align:center; vertical-align:middle" %)**Function code**|(% style="text-align:center; vertical-align:middle" %)**Error code**|(% style="text-align:center; vertical-align:middle" %)**CRC check code**
154 +|=(% style="text-align: center; vertical-align: middle;" %)**Address**|=(% style="text-align: center; vertical-align: middle;" %)**Function code**|=(% style="text-align: center; vertical-align: middle;" %)**Error code**|=(% style="text-align: center; vertical-align: middle;" %)**CRC check code**
154 154  |(% style="text-align:center; vertical-align:middle" %)1 byte|(% style="text-align:center; vertical-align:middle" %)Command code+0x80|(% style="text-align:center; vertical-align:middle" %)Error code|(% style="text-align:center; vertical-align:middle" %)2 bytes
155 155  
156 156  When an error occurs, set the function code bit7 issued by the host to 1, and return (for example, 0x03 returns 0x83, 0x06 returns 0x86); the description of the error code are as follows.
157 157  
158 158  (% class="table-bordered" %)
159 -|(% style="text-align:center; vertical-align:middle" %)**Error code**|(% style="text-align:center; vertical-align:middle" %)**Coding description**
160 +|=(% style="text-align: center; vertical-align: middle;" %)**Error code**|=(% style="text-align: center; vertical-align: middle;" %)**Coding description**
160 160  |(% style="text-align:center; vertical-align:middle" %)0x0001|(% style="text-align:center; vertical-align:middle" %)Illegal command code
161 161  |(% style="text-align:center; vertical-align:middle" %)0x0002|(% style="text-align:center; vertical-align:middle" %)Illegal data address
162 162  |(% style="text-align:center; vertical-align:middle" %)0x0003|(% style="text-align:center; vertical-align:middle" %)Illegal data
... ... @@ -202,8 +202,6 @@
202 202  |**high byte**|**low byte**|**high byte**|**low byte**
203 203  |01|06|01|0A|0B|B8|AF, 76
204 204  
205 -
206 -
207 207  **10 Function code write**
208 208  
209 209  P07-09 set the 1st segment position to 2000, and this variable corresponds to the Modbus address: 1801 (0x0709).
... ... @@ -227,15 +227,15 @@
227 227  
228 228  Figure 8-3 Modbus communication parameter setting process
229 229  
230 -**(1) Set the servo address P12-1**
229 +**Set the servo address P12-1**
231 231  
232 232  When multiple servos are in network communication, each servo can only have a unique address, otherwise it will cause abnormal communication and fail to communicate.
233 233  
234 -**(2) Set the serial port baud rate P12-2**
233 +**Set the serial port baud rate P12-2**
235 235  
236 236  The communication rate of the servo and the communication rate of the host computer must be set consistently, otherwise the communication cannot be carried out.
237 237  
238 -**(3) Set the serial port data format P12-3**
237 +**Set the serial port data format P12-3**
239 239  
240 240  The data bit check methods of servo communication are:
241 241  
... ... @@ -246,7 +246,7 @@
246 246  
247 247  The data frame format of the servo and the host computer must be consistent, otherwise the communication cannot be carried out.
248 248  
249 -**(4) Set that whether the function code changed by Modbus communication is written into EEPROM in real time [P12-4]**
248 +**Set that whether the function code changed by Modbus communication is written into EEPROM in real time [P12-4]**
250 250  
251 251  When the host computer modifies the servo function code through communication, it can choose to store it in EEPROM in real time, which has the function of power-off storage.
252 252  
... ... @@ -258,7 +258,7 @@
258 258  |(% style="text-align:center; vertical-align:middle" %)[[image:image-20220611153214-3.png]]
259 259  |After the EEPROM is damaged, the servo will have an non resettable fault!
260 260  
261 -**(5) Set the high and low order of the 32-bit monitoring data**
260 +**Set the high and low order of the 32-bit monitoring data**
262 262  
263 263  Part of the monitoring volume is 32-bit length and occupies 2 consecutive bias numbers. The user needs to set the order of the data high bit and low bit correctly, otherwise it will cause data reading and writing errors!
264 264  
... ... @@ -267,51 +267,42 @@
267 267  The description of related function codes are as follows.
268 268  
269 269  (% class="table-bordered" %)
270 -|(% style="text-align:center; vertical-align:middle; width:121px" %)**Function code**|(% style="text-align:center; vertical-align:middle; width:205px" %)**Name**|(% style="text-align:center; vertical-align:middle; width:187px" %)(((
269 +|=(% style="text-align: center; vertical-align: middle; width: 121px;" %)**Function code**|=(% style="text-align: center; vertical-align: middle; width: 165px;" %)**Name**|=(% style="text-align: center; vertical-align: middle; width: 148px;" %)(((
271 271  **Setting method**
272 -)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
271 +)))|=(% style="text-align: center; vertical-align: middle; width: 165px;" %)(((
273 273  **Effective time**
274 -)))|(% style="text-align:center; vertical-align:middle; width:130px" %)**Default value**|(% style="text-align:center; vertical-align:middle; width:132px" %)**Range**|(% style="text-align:center; vertical-align:middle; width:252px" %)**Definition**|(% style="text-align:center; vertical-align:middle; width:85px" %)**Unit**
275 -|(% style="text-align:center; vertical-align:middle; width:121px" %)P12-02|(% style="text-align:center; vertical-align:middle; width:205px" %)Baud rate|(% style="text-align:center; vertical-align:middle; width:187px" %)(((
273 +)))|=(% style="text-align: center; vertical-align: middle; width: 109px;" %)**Default value**|=(% style="text-align: center; vertical-align: middle; width: 85px;" %)**Range**|=(% style="text-align: center; vertical-align: middle; width: 224px;" %)**Definition**|=(% style="text-align: center; vertical-align: middle; width: 69px;" %)**Unit**
274 +|(% style="text-align:center; vertical-align:middle; width:121px" %)P12-02|(% style="text-align:center; vertical-align:middle; width:165px" %)Baud rate|(% style="text-align:center; vertical-align:middle; width:148px" %)(((
276 276  Operation setting
277 -)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
276 +)))|(% style="text-align:center; vertical-align:middle; width:165px" %)(((
278 278  Effective immediately
279 -)))|(% style="text-align:center; vertical-align:middle; width:130px" %)2|(% style="text-align:center; vertical-align:middle; width:132px" %)0 to 5|(% style="width:252px" %)(((
280 -0-2400bps
281 -
282 -1-4800bps
283 -
284 -2-9600bps
285 -
286 -3-19200bps
287 -
288 -4-38400bps
289 -
290 -5-57600bp
291 -)))|(% style="text-align:center; vertical-align:middle; width:85px" %)-
292 -|(% style="text-align:center; vertical-align:middle; width:121px" %)P12-03|(% style="text-align:center; vertical-align:middle; width:205px" %)Serial data format|(% style="text-align:center; vertical-align:middle; width:187px" %)(((
278 +)))|(% style="text-align:center; vertical-align:middle; width:109px" %)2|(% style="text-align:center; vertical-align:middle; width:85px" %)0 to 5|(% style="width:224px" %)(((
279 +* 0: 2400bps
280 +* 1: 4800bps
281 +* 2: 9600bps
282 +* 3: 19200bps
283 +* 4: 38400bps
284 +* 5: 57600bp
285 +)))|(% style="text-align:center; vertical-align:middle; width:69px" %)-
286 +|(% style="text-align:center; vertical-align:middle; width:121px" %)P12-03|(% style="text-align:center; vertical-align:middle; width:165px" %)Serial data format|(% style="text-align:center; vertical-align:middle; width:148px" %)(((
293 293  Operation setting
294 -)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
288 +)))|(% style="text-align:center; vertical-align:middle; width:165px" %)(((
295 295  Effective immediately
296 -)))|(% style="text-align:center; vertical-align:middle; width:130px" %)0|(% style="text-align:center; vertical-align:middle; width:132px" %)0 to 3|(% style="width:252px" %)(((
297 -0: 1 stop bit, no parity
298 -
299 -1: 1 stop bit, odd parity
300 -
301 -2: 1 stop bit, even parity
302 -
303 -3: 2 stop bits, no parity
304 -)))|(% style="text-align:center; vertical-align:middle; width:85px" %)-
305 -|(% style="text-align:center; vertical-align:middle; width:121px" %)P12-04|(% style="text-align:center; vertical-align:middle; width:205px" %)Modbus communication data is written into EEPROM|(% style="text-align:center; vertical-align:middle; width:187px" %)(((
290 +)))|(% style="text-align:center; vertical-align:middle; width:109px" %)0|(% style="text-align:center; vertical-align:middle; width:85px" %)0 to 3|(% style="width:224px" %)(((
291 +* 0: 1 stop bit, no parity
292 +* 1: 1 stop bit, odd parity
293 +* 2: 1 stop bit, even parity
294 +* 3: 2 stop bits, no parity
295 +)))|(% style="text-align:center; vertical-align:middle; width:69px" %)-
296 +|(% style="text-align:center; vertical-align:middle; width:121px" %)P12-04|(% style="text-align:center; vertical-align:middle; width:165px" %)Modbus communication data is written into EEPROM|(% style="text-align:center; vertical-align:middle; width:148px" %)(((
306 306  Operation setting
307 -)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
298 +)))|(% style="text-align:center; vertical-align:middle; width:165px" %)(((
308 308  Effective immediately
309 -)))|(% style="text-align:center; vertical-align:middle; width:130px" %)0|(% style="text-align:center; vertical-align:middle; width:132px" %)0 to 1|(% style="width:252px" %)(((
310 -0: Do not write to EEPROM, and do not store after power failure;
300 +)))|(% style="text-align:center; vertical-align:middle; width:109px" %)0|(% style="text-align:center; vertical-align:middle; width:85px" %)0 to 1|(% style="width:224px" %)(((
301 +* 0: Do not write to EEPROM, and do not store after power failure;
302 +* 1: Write to EEPROM, power-down storage.
303 +)))|(% style="text-align:center; vertical-align:middle; width:69px" %)-
311 311  
312 -1: Write to EEPROM, power-down storage.
313 -)))|(% style="text-align:center; vertical-align:middle; width:85px" %)-
314 -
315 315  = **Modbus communication variable address and value** =
316 316  
317 317  == **Variable address description** ==
... ... @@ -340,19 +340,15 @@
340 340  In order to facilitate actual use, this manual provides both decimal and hexadecimal address identification, it is shown in the following table:
341 341  
342 342  (% class="table-bordered" %)
343 -|(% style="text-align:center; vertical-align:middle" %)**Function code**|(% style="text-align:center; vertical-align:middle" %)(((
344 -**Modbus address**
333 +|=(% style="text-align: center; vertical-align: middle; width: 162px;" %)**Function code**|=(% style="text-align: center; vertical-align: middle; width: 302px;" %)(((
334 +**Modbus address (Hexadecimal)**
335 +)))|=(% style="text-align: center; vertical-align: middle; width: 278px;" %)(((
336 +**Modbus address (Decimal)**
337 +)))|=(% style="text-align: center; vertical-align: middle; width: 192px;" %)**Category**|=(% style="text-align: center; vertical-align: middle; width: 142px;" %)**Name**
338 +|(% style="text-align:center; vertical-align:middle; width:162px" %)P0-1|(% style="text-align:center; vertical-align:middle; width:302px" %)0x0001|(% style="text-align:center; vertical-align:middle; width:278px" %)1|(% style="text-align:center; vertical-align:middle; width:192px" %)Basic settings|(% style="text-align:center; vertical-align:middle; width:142px" %)Control mode
345 345  
346 -**(Hexadecimal)**
347 -)))|(% style="text-align:center; vertical-align:middle" %)(((
348 -**Modbus address**
340 +For detailed parameter addresses, please refer to __[["11.1 Lists of parameters".>>https://docs.we-con.com.cn/bin/view/Servo/Manual/02%20VD2%20SA%20Series/11%20Appendix/#HListsofparameters]]__
349 349  
350 -**(Decimal)**
351 -)))|(% style="text-align:center; vertical-align:middle" %)**Category**|(% style="text-align:center; vertical-align:middle" %)**Name**
352 -|(% style="text-align:center; vertical-align:middle" %)P0-1|(% style="text-align:center; vertical-align:middle" %)0x0001|(% style="text-align:center; vertical-align:middle" %)1|(% style="text-align:center; vertical-align:middle" %)Basic settings|(% style="text-align:center; vertical-align:middle" %)Control mode
353 -
354 -For detailed parameter addresses, please refer to __[["11.1 Lists of parameters".>>https://docs.we-con.com.cn/bin/view/Servo/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/11%20Appendix/#HListsofparameters]]__
355 -
356 356  == **Variable value type description** ==
357 357  
358 358  When writing function codes with signed numbers, you need to convert the pre-written data into hexadecimal complements. The conversion rules are as follows: