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Changes for page 08 Communication

Last modified by Iris on 2025/07/24 15:23
From version 1.1
edited by Leo Wei
on 2022/06/08 12:57
Change comment: Imported from XAR
To version 4.4
edited by Joey
on 2022/06/18 21:54
Change comment: Update document after refactoring.

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1 -Servo.2\. User Manual.06 VD2 SA Series Servo Drives Manual (Full V1\.1).WebHome
1 +Servo.1 User Manual.06 VD2 SA Series Servo Drives Manual (Full V1\.1).WebHome
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1 -XWiki.admin
1 +XWiki.Joey
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6 6  
7 7  The position of RS485 communication port (take VD2B as an example) is as the figure below.
8 8  
9 -[[image:http://docs.we-con.com.cn/wiki/servo/download/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/WebHome/Wecon%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29_html_6583b880b8115df0.gif?rev=1.1||alt="Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_6583b880b8115df0.gif"]]
9 +(% style="text-align:center" %)
10 +[[image:image-20220608154248-1.png]]
10 10  
11 11  Figure 8-1 The position of RS485 communication port of VD2B drive
12 12  
13 -For the position of the RS485 communication port of other models, see __[[4.5 Communication signal wiring>>http://13.229.109.52:8080/wiki/servo/view/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/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/04%20Wiring/#HCommunicationsignalwiring]]__.
14 14  
15 15  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.
16 16  
17 17  (% class="table-bordered" %)
18 -|(% style="text-align:center; vertical-align:middle" %)[[image:http://docs.we-con.com.cn/wiki/servo/download/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/WebHome/Wecon%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29_html_6db94f5d0421f97a.png?rev=1.1||alt="Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_6db94f5d0421f97a.png"]]
19 +|(% style="text-align:center; vertical-align:middle" %)[[image:image-20220611153134-1.png]]
19 19  |(((
20 20  ✎The wiring must use shielded twisted pair, stay away from strong electricity, do not run in parallel with the power line, let alone bundle it together!
21 21  
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22 22  ✎In a half-duplex connection, only one servo drive can communicate with the host computer at the same time. If two or more servo drives upload data at the same time, bus competition will occur. Not only will it lead to communication failure, it may also cause some components to generate large currents and damage the components.
23 23  )))
24 24  
25 -[[image:http://docs.we-con.com.cn/wiki/servo/download/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/WebHome/Wecon%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29_html_ec4180b4b0c8dd01.gif?rev=1.1||alt="Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_ec4180b4b0c8dd01.gif"]]
26 +(% style="text-align:center" %)
27 +[[image:image-20220608174415-1.png]]
26 26  
27 27  Figure 8-2 RS485 communication network wiring diagram
28 28  
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31 31  No point in the RS485 network can be directly grounded. All devices in the network must be well grounded through their own grounding terminals.
32 32  
33 33  (% class="table-bordered" %)
34 -|(% style="text-align:center; vertical-align:middle" %)[[image:http://docs.we-con.com.cn/wiki/servo/download/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/WebHome/Wecon%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29_html_6db94f5d0421f97a.png?rev=1.1||alt="Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_6db94f5d0421f97a.png"]]
36 +|(% style="text-align:center; vertical-align:middle" %)[[image:image-20220611153144-2.png]]
35 35  |Under no circumstances can the grounding wire form a closed loop.
36 36  
37 37  When wiring, consider the drive capability of the computer/PLC and the distance between the computer/PLC and the servo drive. If the drive capacity is insufficient, a repeater is needed.
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209 209  
210 210  = **Servo communication parameter setting** =
211 211  
212 -[[image:http://docs.we-con.com.cn/wiki/servo/download/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/WebHome/Wecon%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29_html_fd76131f4dd0361c.gif?rev=1.1||alt="Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_fd76131f4dd0361c.gif"]]
214 +(% style="text-align:center" %)
215 +[[image:image-20220608174504-2.png]]
213 213  
214 214  Figure 8-3 Modbus communication parameter setting process
215 215  
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244 244  If you need to change the value of the function code frequently, it is recommended to turn off the function of real-time writing to EERPOM of function code, otherwise the EEPROM will be shortened due to frequent erasing and writing of the EEPROM.
245 245  
246 246  (% class="table-bordered" %)
247 -|(% style="text-align:center; vertical-align:middle" %)[[image:http://docs.we-con.com.cn/wiki/servo/download/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/WebHome/Wecon%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29_html_6db94f5d0421f97a.png?rev=1.1||alt="Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_6db94f5d0421f97a.png"]]
250 +|(% style="text-align:center; vertical-align:middle" %)[[image:image-20220611153214-3.png]]
248 248  |After the EEPROM is damaged, the servo will have an non resettable fault!
249 249  
250 250  **(5) Set the high and low order of the 32-bit monitoring data**
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256 256  The description of related function codes are as follows.
257 257  
258 258  (% class="table-bordered" %)
259 -|(% 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:135px" %)(((
262 +|(% 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" %)(((
260 260  **Setting method**
261 -)))|(% style="text-align:center; vertical-align:middle; width:171px" %)(((
264 +)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
262 262  **Effective time**
263 -)))|(% style="text-align:center; vertical-align:middle; width:115px" %)**Default value**|(% style="text-align:center; vertical-align:middle; width:61px" %)**Range**|(% style="text-align:center; vertical-align:middle; width:347px" %)**Definition**|(% style="text-align:center; vertical-align:middle" %)**Unit**
264 -|(% 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:135px" %)(((
266 +)))|(% 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:335px" %)**Definition**|(% style="text-align:center; vertical-align:middle; width:189px" %)**Unit**
267 +|(% 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" %)(((
265 265  Operation setting
266 -)))|(% style="text-align:center; vertical-align:middle; width:171px" %)(((
269 +)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
267 267  Effective immediately
268 -)))|(% style="text-align:center; vertical-align:middle; width:115px" %)2|(% style="text-align:center; vertical-align:middle; width:61px" %)0 to 5|(% style="width:347px" %)(((
271 +)))|(% style="text-align:center; vertical-align:middle; width:130px" %)2|(% style="text-align:center; vertical-align:middle; width:132px" %)0 to 5|(% style="width:335px" %)(((
269 269  0-2400bps
270 270  
271 271  1-4800bps
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277 277  4-38400bps
278 278  
279 279  5-57600bp
280 -)))|(% style="text-align:center; vertical-align:middle" %)-
281 -|(% 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:135px" %)(((
283 +)))|(% style="text-align:center; vertical-align:middle; width:189px" %)-
284 +|(% 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" %)(((
282 282  Operation setting
283 -)))|(% style="text-align:center; vertical-align:middle; width:171px" %)(((
286 +)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
284 284  Effective immediately
285 -)))|(% style="text-align:center; vertical-align:middle; width:115px" %)0|(% style="text-align:center; vertical-align:middle; width:61px" %)0 to 3|(% style="width:347px" %)(((
288 +)))|(% style="text-align:center; vertical-align:middle; width:130px" %)0|(% style="text-align:center; vertical-align:middle; width:132px" %)0 to 3|(% style="width:335px" %)(((
286 286  0: 1 stop bit, no parity
287 287  
288 288  1: 1 stop bit, odd parity
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290 290  2: 1 stop bit, even parity
291 291  
292 292  3: 2 stop bits, no parity
293 -)))|(% style="text-align:center; vertical-align:middle" %)-
294 -|(% 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:135px" %)(((
296 +)))|(% style="text-align:center; vertical-align:middle; width:189px" %)-
297 +|(% 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" %)(((
295 295  Operation setting
296 -)))|(% style="text-align:center; vertical-align:middle; width:171px" %)(((
299 +)))|(% style="text-align:center; vertical-align:middle; width:186px" %)(((
297 297  Effective immediately
298 -)))|(% style="text-align:center; vertical-align:middle; width:115px" %)0|(% style="text-align:center; vertical-align:middle; width:61px" %)0 to 1|(% style="width:347px" %)(((
301 +)))|(% style="text-align:center; vertical-align:middle; width:130px" %)0|(% style="text-align:center; vertical-align:middle; width:132px" %)0 to 1|(% style="width:335px" %)(((
299 299  0: Do not write to EEPROM, and do not store after power failure;
300 300  
301 301  1: Write to EEPROM, power-down storage.
302 -)))|(% style="text-align:center; vertical-align:middle" %)-
305 +)))|(% style="text-align:center; vertical-align:middle; width:189px" %)-
303 303  
304 304  = **Modbus communication variable address and value** =
305 305  
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343 343  )))|(% style="text-align:center; vertical-align:middle" %)**Category**|(% style="text-align:center; vertical-align:middle" %)**Name**
344 344  |(% 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
345 345  
346 -For detailed parameter addresses, please refer to __[["11.1 Lists of parameters".>>http://13.229.109.52:8080/wiki/servo/view/2.%20User%20Manual/06%20VD2%20SA%20Series%20Servo%20Drives%20Manual%20%28Full%20V1.1%29/11%20Appendix/#HListsofparameters]]__
349 +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]]__
347 347  
348 348  == **Variable value type description** ==
349 349  
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