8/10/2020 12:23 PM | |
Joined: 12/31/2018 Last visit: 3/10/2024 Posts: 96 Rating: (3) |
HI the earlier version of WTV-531 was not supporting the RS-232 Connection, hope you have purchased Upgraded version. See the old datasheet. AttachmentWTV531-GA5060_en (1).pdf (292 Downloads) |
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8/10/2020 6:30 PM | |
Joined: 11/8/2017 Last visit: 9/19/2024 Posts: 337 Rating: (189)
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Hi, If everything downstream of the WTV531 is fine, i.e. you can can connect to the WTV531 directly from your laptop and scan/see your heat meter successfully, then your issue is upstream from the WTV531, i.e. at the TXOpen. You made reference to screenshots etc in your post, but there's nothing at the bottom of your post. Can you please provide some more info, showing how the TX Open is configured, and how you have wired the TX Open to the WTV531? Have you made sure that you have downloaded the MBus firmware into the TX Open? Have you checked the connections from the TX Open to the WTV531? i.e TX connects to RX, and RX connects to TX? Regards, AttachmentACT531 Software.pdf (350 Downloads) |
Last edited by: _CJ at: 08/10/2020 18:32:11Last edited by: _CJ at: 08/10/2020 18:43:31 |
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8/10/2020 9:05 PM | |
Posts: 9 Rating: (0) |
Thank you for your response! I swapped out the WTV531 to a new one just so that i can verify its not the problem, and yeah the problem still exist. I tried to take some screenshots in the TX open tool just so you can get an idea of the workflow I'm trying. AttachmentPost2.0.zip (299 Downloads) |
8/10/2020 9:16 PM | |
Posts: 9 Rating: (0) |
According to the datasheets the wiring should be correct. The devices are connected with the red black and yellow wires of a knx cable. Attachmentwiring.zip (310 Downloads) |
8/10/2020 9:17 PM | |
Posts: 9 Rating: (0) |
Tomorrow i can screen capture the process if necessary. I just realized that didn't uploaded anything in the first post. Myb Attachmentdocumentation pdfs.zip (306 Downloads) |
Last edited by: Dravecz Gábor at: 08/10/2020 21:24:49 |
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8/11/2020 4:41 PM | |
Joined: 11/8/2017 Last visit: 9/19/2024 Posts: 337 Rating: (189)
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Hi, That's good news that it's now working, thanks for coming back to confirm what the issue was. For the TX/RX RS232 connections. TX is short for 'Transmit'. RX is short for 'Receive'. (There is no + or - with the 232 connection, this is for 485). If one device 'Transmits' data, the other device needs to 'Receive' it. This is why TX connects to RX, and RX connects to TX. You can liken it to speaking to someone on a telephone - if both parties are talking (transmitting), then neither party is listening (receiving). Hopefully that makes sense. I have attached a PDF for you which gives some in-depth detail on the MBus protocol. The MBus firmware that's downloaded to a TX Open (or PX Open as well) does all the necessary data translation for you, so the PDF gives some insight into what the firmware is doing in the background. Note that if you were using RS485 (rather than 232), you would in fact connect + to +. And - to -. Regards, AttachmentM-Bus Protocol.pdf (370 Downloads) |
Last edited by: _CJ at: 08/11/2020 16:45:27 |
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This contribution was helpful to1 thankful Users |
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