https://forge.codesys.com/forge/talk/CODESYS-V2/thread/cac2c1ac72/2020-02-27T22:09:51.515000ZRecent posts to J1939 Extended BYTES2020-02-27T22:09:51.515000Z2020-02-27T22:09:51.515000Zthebig1https://forge.codesys.com/u/thebig1/https://forge.codesys.com2105ff0152a6a9cb2abe7afc9547e97e6690c2ee

<div class="markdown_content"><p>Hi,</p> <p>I did try that but when the message was transmitted, it caused issues on the BUS with currupting other messages.<br/> I am at IFM Wednesday so will be looking at this and let you know.</p></div>

2020-02-27T22:09:49.989000Z2020-02-27T22:09:49.989000Zerik.gerritshttps://forge.codesys.com/u/erik-gerrits/https://forge.codesys.com30e7504246b8f3a802f64376ce35263fff799e7b

<div class="markdown_content"><p>That is an ifm specific function block. If you are using the J1939_TX_ENH_MULTI you can specify the length of your array as an input the function block. You still need to declare your array as an array ARRAY <span>[0..1784]</span> OF BYTE but it will only send the length that you set.</p></div>

2020-02-27T22:09:45.715000Z2020-02-27T22:09:45.715000Zshooterhttps://forge.codesys.com/u/shooter/https://forge.codesys.com578a163016751dff876cf5c6157c63e3319f2cb7

<div class="markdown_content"><p>w <a class="" href="http://www.oscat.de" rel="nofollow">www.oscat.de</a> w <br/> then go to download manager<br/> then you see a oscatbasic in top line, change it to what you want and press the download button.<br/> it is free</p></div>

2020-02-27T22:09:44.184000Z2020-02-27T22:09:44.184000Zthebig1https://forge.codesys.com/u/thebig1/https://forge.codesys.com6e13cfd1c4947a6fce1243b7cd53feba6f30175e

<div class="markdown_content"><p>hi,</p> <p>I tried before but I can not get registered :0(</p></div>

2020-02-27T22:09:42.642000Z2020-02-27T22:09:42.642000Zshooterhttps://forge.codesys.com/u/shooter/https://forge.codesys.com746691d42acefd3452d3b9daa15d918516681e35

<div class="markdown_content"><p>oscat has several libs.<br/> look on the site</p></div>

2020-02-27T22:09:38.380000Z2020-02-27T22:09:38.380000Zthebig1https://forge.codesys.com/u/thebig1/https://forge.codesys.com34535f185e50474a04a83528f8e3a63d54d70d9a

<div class="markdown_content"><p>Hi,</p> <p>The only function blocks I have come from IFM and they are just CAN_TX or J1939_TX, both limited to 8 BYTES.<br/> In the Oscat lib I have, there is no cominications?</p></div>

2020-02-27T22:09:36.797000Z2020-02-27T22:09:36.797000Zshooterhttps://forge.codesys.com/u/shooter/https://forge.codesys.com9a7c3c66c8a1e31caa9392f6f18b808f9de8793f

<div class="markdown_content"><p>what FB did you find and did you have a look at oscat library for communication?</p></div>

2020-02-27T22:09:32.554000Z2020-02-27T22:09:32.554000Zthebig1https://forge.codesys.com/u/thebig1/https://forge.codesys.comc8690578f8ca2a66265257eb5b1cbd03a15a5b71

<div class="markdown_content"><p>Hi Guys,</p> <p>I need to send a J1939 message that has 20 BYTES, rather than the standard 8 BYTES.<br/> The only FB I can find has 0..1748 BYTES. I Tried this but all the BYTES after 20 I think are causing an issue with false data on the BUS.<br/> Normally I would fill unused BYTES with FF (255) but it would take me hours to do this to each individue unused BYTES.<br/> Any way to do this simpley?</p></div>