https://forge.codesys.com/forge/talk/CODESYS-V2/thread/d92d397ee0/2020-02-27T19:37:35.133000ZRecent posts to How to send an SDO message.2020-02-27T19:37:35.133000Z2020-02-27T19:37:35.133000Zferhttps://forge.codesys.com/u/fer/https://forge.codesys.comda4652ce0ff0f817e4349b8b626b5ccdbec1c93b

<div class="markdown_content"><p>I have a problem with SDOs too. I am using the canopen manager library and the function CanopenSendSDO with no results. </p> <p>The call of the function i am using is</p> <p>CanOpenSendSDOread<br/> (Enable:=ton.Q,(<em>Rising trig each 2s</em>)<br/> wDrvNr:=0,(<em>one master, the PLC</em>)<br/> ucNodeId:=5,(<em>Id of the node</em>)<br/> wIndex:=16#6411,(<em>Index of the node</em>)<br/> bySubIndex:=00,(<em>Subindex. I am trying to read the number of subindexes of this node</em>)<br/> ucModus:=16#40,(<em>read mode</em>)</p> <p>ucAnswerBytes=&gt;ar(<em>and here is where we expect the answer, where ar is an array of 8 bytes</em>))</p> <p>I can see with a sniffer the SDOs are in the bus but I don´t receive any answer</p></div>

2020-02-27T19:37:31.573000Z2020-02-27T19:37:31.573000Zddefhttps://forge.codesys.com/u/ddef/https://forge.codesys.comfadb4c0784703e6ac872331cfaf018bd520f3b5f

<div class="markdown_content"><p>Hi, <br/> Could you please advise how to send an SDO message (ref. attached picture) in CODESYS? <br/> What libraries should be used? <br/> I would appreciate if you give me a sample of a program.</p> <p><img alt="IMG: Easy221_CO.JPG" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=279"/></p></div>