Transfer NCK and PLC data from PC to Sinumerik 840 D PCU20
Created by: Eduardoss at: 6/26/2016 5:05 PM (7 Replies)
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| 6/26/2016 5:05 PM | |
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Posts: 4 Rating:
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The battery of NCU-box has been removed when the electric power was off. So, after that I did the procedure to reset NCU and PLC by S3 and S4. But now, I've tried transfer with Winpcwin software the NCK and PLC data from PC to Sinumerik 840 D PCU20, and the message "V24 Fehler BUFFER OVERFLOW" (see picture attached) appears when the transfer begins. I am using a correct serial cable 9 pins - 9 pins. The HMI configuration is the same in PC: - COM2, RTS/CTS, Baud rate: 9600, Stop bit: 1, Parity: None, Data bit: 8 , PC Binary Format. Give me your opinion about what I could do please. I hope your reply. Regards. |
| 6/27/2016 3:18 AM | |
Joined: 10/17/2007 Last visit: 4/6/2025 Posts: 4269 Rating:
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Try to low Baudrate from 9600 to 4800 or 1200.(attention both PC and PCU side) to see if you can overcome the problem. if not post here we need think about other issue. PS: after answer you, I just remember one possible cause --what kind of cable you use? --It is Siemens standard 9 pin to 9 pin, or you make cable by yourself. Siemens cable has HW hand shake RTS--CTS, some simple cable just jumper that. I remember if using hand shake, Baudrate 19200 will also good. I attached cable diagram for you |
Last edited by: nulizhang at: 6/27/2016 3:24:30 AMLast edited by: nulizhang at: 6/27/2016 3:29:55 AMadd RS232 9-9 If you like my comments please |
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| 6/27/2016 11:34 PM | |
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Posts: 4 Rating:
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Thank you for the tips! I was using a 9pins - 9pins cable made by myself, but today I suspected about damage in the serial port COM2 (9pins) , then I made a 25pins - 25pins cable and had success to restore the backup making the transfer via COM1 (25pins) Sinumerik and COM1 (25pins) Simatic PG Field . Summing up, the problem was the serial port COM2 . Thanks very much for your attention. Kind regards |
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| 6/28/2016 1:02 AM | |
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Joined: 10/17/2007 Last visit: 4/6/2025 Posts: 4269 Rating:
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!!!--Notes: please Forum management !! can you please check the thread /post editor have bug, they always cut my input text, most time when I input a long contents and press "Enter" for change line, then most of my input are disappear--lost. ========================== Good to know you fixed the problem, that is very good you share your information here that can help other members including me. You see I am one of members in CNC branch, who like to offer help. But I don't like some new members. they just register and ask one question in no detail information, when get help, then like "a stone dropped into deep Pacific Ocean" never have response again. now I want you to make sure the cable you made 9-9 pin, you making it in the diagram like I posted or you made jumper RTS-CTS. You know that can help you and me to make decision if the COM2 port defective or just cable issue.As Siemens cable has HW hand shake --it is normally has no issue for "Buff full error"--I said you can use baud rate 19200 even 38400.
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Last edited by: nulizhang at: 6/28/2016 10:25:27 PMADD being cut contents--!!!--Notes: please Forum management !! can you please check the thread /post editor have bug, they always cut my input text, most time when I input a long contents and press "Enter" for change line, then most of my input are disappear--lost. If you like my comments please |
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| 7/5/2016 3:57 PM | |
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Posts: 4 Rating:
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First, sorry for the delay in response. My team is reduced and I was having trouble with another equipment. So, I checked the 9pins - 9pins cable that I had done, and the connections was exactly as in the diagram you sent me. For complementary info, the diagram 25pins-25pins cable that I made, is attached in this message. Actually I have not checked COM2 beyond 9600 baudrate. I imagined that higher speed could increase the problem. And after the transmission have worked well using COM1 port, I had to release the equipment to restart production. In the next opportunity, I'll do a test with the COM2 using the same 9pins-9pins cable, but with baudrate between 19200 to 38400 as you suggested. Thanks a lot for your attention, and if you have any more information about tests that I could do, I''ll appreciate. Regards. |
| 4/5/2017 8:34 AM | |
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Posts: 1 Rating:
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thanks for your nice contributions to this problem. we are fighting with a similar solution here...just to understand you correctly...you would say to take a rs232 null modem cable with full handshaking like in your first picture, but then to jumper RTS with CTS, which means pin 7 and 8? does this have to be done on both sides of the cable? |
| 4/11/2017 12:46 AM | |
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Joined: 10/17/2007 Last visit: 4/6/2025 Posts: 4269 Rating:
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I suggest any kind of cable --DO NOT jumper RTS to CTS
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If you like my comments please |
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| 4/14/2017 5:56 PM | |
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Posts: 4 Rating:
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Did you solve the problem? So, I am not a Siemens speciallist, but I'll try help you. Like "nulizhang" said, I do not recomend a jumper CTS-RTS, just connect it like the picture attached above. Let me ask somethings: - Which kind of cable have you tried to use: 9pin-9pin or 25pin-25pin ? - Did you try use another COM PORT? - Share us the cable connections that you use. - What kind of Sinumerik do you have? - Do you have a picture of the problem (message)? Share us. I Hope help you. |
Last edited by: Eduardoss at: 4/19/2017 6:06:52 PM |
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