https://forge.codesys.com/forge/talk/Engineering/thread/5cabc63909/2020-02-27T14:08:38.268000ZRecent posts to RS232 Serial communication problems2020-02-27T14:08:38.268000Z2020-02-27T14:08:38.268000Ztimvhhttps://forge.codesys.com/u/timvh/https://forge.codesys.com5379d7762868e7c7af9039dc0b6c8299c5beac57

<div class="markdown_content"><p>You call comw1 only with execute := true.<br/> This is the trigger to start.<br/> To trigger it again, call the FB with execute := false at least one time in between.</p></div>

2020-02-27T14:08:37.888000Z2020-02-27T14:08:37.888000Zrunar@samey.ishttps://forge.codesys.com/u/runar-samey-is/https://forge.codesys.comde700ce14c9e7eeb1bf0c96191fcc43091fc840b

<div class="markdown_content"><p>I have tried it with and without handshake. I have also tried it without closing the port between sending messages. Here is the code I am using.</p> <p>IF xStartTest THEN</p> <p>//The parameters are set for the COM Port<br/> aCom1Params<span>[1]</span>.udiParameterId := COM.CAA_Parameter_Constants.udiPort;<br/> aCom1Params<span>[1]</span>.udiValue := 1; // the correct Port should be adapted<br/> aCom1Params<span>[2]</span>.udiParameterId := COM.CAA_Parameter_Constants.udiBaudrate;<br/> aCom1Params<span>[2]</span>.udiValue := 115200;<br/> aCom1Params<span>[3]</span>.udiParameterId := COM.CAA_Parameter_Constants.udiParity;<br/> aCom1Params<span>[3]</span>.udiValue := COM.PARITY.NONE;<br/> aCom1Params<span>[4]</span>.udiParameterId := COM.CAA_Parameter_Constants.udiStopBits;<br/> aCom1Params<span>[4]</span>.udiValue := COM.STOPBIT.ONESTOPBIT;<br/> aCom1Params<span>[5]</span>.udiParameterId := COM.CAA_Parameter_Constants.udiTimeout;<br/> aCom1Params<span>[5]</span>.udiValue := 0;<br/> aCom1Params<span>[6]</span>.udiParameterId := COM.CAA_Parameter_Constants.udiByteSize;<br/> aCom1Params<span>[6]</span>.udiValue := 8;<br/> aCom1Params<span>[7]</span>.udiParameterId := COM.CAA_Parameter_Constants.udiBinary;<br/> aCom1Params<span>[7]</span>.udiValue := 0;</p> <p>// Handshake Paramet</p> <p>//aCom1Params<span>[8]</span>.udiParameterId := COM.udiDtrControl;<br/> //aCom1Params<span>[8]</span>.udiValue := 16#02; // handshake<br/> //aCom1Params<span>[9]</span>.udiParameterId := COM.udiOutxDsrFlow;<br/> //aCom1Params<span>[9]</span>.udiValue := 1; // true<br/> //aCom1Params<span>[10]</span>.udiParameterId := COM.udiRtsControl;<br/> //aCom1Params<span>[10]</span>.udiValue := 16#02; // handshake<br/> //aCom1Params<span>[11]</span>.udiParameterId := COM.udiOutxCtsFlow;<br/> //aCom1Params<span>[11]</span>.udiValue := 1; // true</p> <p>// Handshake Parameter</p> <p>aCom1Params<span>[8]</span>.udiParameterId := COM.udiInX;<br/> aCom1Params<span>[8]</span>.udiValue := 1; // true<br/> aCom1Params<span>[9]</span>.udiParameterId := COM.udiXonChar;<br/> aCom1Params<span>[9]</span>.udiValue := 17;<br/> aCom1Params<span>[10]</span>.udiParameterId := COM.udiXonLim;<br/> aCom1Params<span>[10]</span>.udiValue := 2048;<br/> aCom1Params<span>[11]</span>.udiParameterId := COM.udiOutX;<br/> aCom1Params<span>[11]</span>.udiValue := 1; // true<br/> aCom1Params<span>[12]</span>.udiParameterId := COM.udiXoffChar;<br/> aCom1Params<span>[12]</span>.udiValue := 19;<br/> aCom1Params<span>[13]</span>.udiParameterId := COM.udiXoffLim;<br/> aCom1Params<span>[13]</span>.udiValue := 512;<br/> aCom1Params<span>[14]</span>.udiParameterId := COM.udiTXContinueOnXoff;<br/> aCom1Params<span>[14]</span>.udiValue := 0; // false</p> <p>END_IF</p> <p>IF xPortOpen THEN<br/> //The first Port is opened with the given parameters<br/> como1(xExecute := TRUE, usiListLength:=SIZEOF(aCom1Params)/SIZEOF(COM.PARAMETER),pParameterList:= ADR(aCom1Params));</p> <p>IF como1.xError THEN<br/> xCom1OpenError := TRUE;<br/> iState := 1000;<br/> END_IF<br/> IF como1.xDone THEN<br/> iState := 10;<br/> END_IF</p> <p>END_IF</p> <p>IF xWrite THEN<br/> // the write process is started for the first port<br/> comw1(xExecute := TRUE,hCom:= como1.hCom,pBuffer:= ADR(sWrite),szSize:= SIZEOF(sWrite));</p> <p>IF comw1.xError THEN<br/> xCom1WriteError := TRUE;<br/> END_IF</p> <p>// if the writing process is completed the reading process can be started<br/> IF comw1.xDone THEN<br/> iState := 15;<br/> END_IF<br/> END_IF</p> <p>IF xPortClose THEN</p> <p>// The first port is closed and the used handle released<br/> comc1(xExecute := TRUE, hCom:= como1.hCom);</p> <p>IF comc1.xError THEN<br/> xCom1CloseError := TRUE;<br/> END_IF</p> <p>IF comc1.xDone OR comc1.xError THEN <br/> iState := 1000;<br/> END_IF<br/> END_IF</p></div>

2020-02-27T14:08:36.956000Z2020-02-27T14:08:36.956000Zrunar@samey.ishttps://forge.codesys.com/u/runar-samey-is/https://forge.codesys.com2b701562ec7c33b6e4400fc67549495758603928

<div class="markdown_content"><p>Hi</p> <p>I am new to this forum and I am just beginning to us codesys. </p> <p>I am trying to get communication between berghof EC1000 and roboteq 2130. I am using 232 serial port. I am using a program I got from the codesys store ( <a class="" href="http://store.codesys.com/serial-com.html" rel="nofollow">http://store.codesys.com/serial-com.html</a> ). I am using Codesys v3.5 SP1 Patch 4.</p> <p>My problem is that I can send one message through the serial port whit out any problems, but when I try to do it again nothing happens. Then I have to logout from the project and download it again to be able to send the messages again. </p> <p>Can anybody please help me with this problem?</p></div>