Recent posts to Modbus: dis- / re-connect cable: modbus does not re-starthttps://forge.codesys.com/forge/talk/Engineering/thread/fb1b3a88db/2020-02-27T14:15:50.361000ZRecent posts to Modbus: dis- / re-connect cable: modbus does not re-startModbus: dis- / re-connect cable: modbus does not re-start2020-02-27T14:15:50.361000Z2020-02-27T14:15:50.361000Ztimvhhttps://forge.codesys.com/u/timvh/https://forge.codesys.com87d79e57c25846fe7990c1736870b7494c48c43e<div class="markdown_content"><p>Please contact your supplier for this.<br/>
Jira is only accessable for direct customers (OEMs) of 3S-Smart Software Solutions and Distributors.</p></div>Modbus: dis- / re-connect cable: modbus does not re-start2020-02-27T14:15:49.235000Z2020-02-27T14:15:49.235000Zchabhttps://forge.codesys.com/u/chab/https://forge.codesys.come4f456ddea6d400e14c3b8a822c6af9cba252614<div class="markdown_content"><p>Tim,<br/>
Thank you for your quick answer.<br/>
I'll apply it immediately.<br/>
Do you know where I can find a list of known issues?<br/>
(I do not have access to the CoDeSys jira database.)<br/>
Regards,<br/>
Edwin.</p></div>Modbus: dis- / re-connect cable: modbus does not re-start2020-02-27T14:15:48.854000Z2020-02-27T14:15:48.854000Ztimvhhttps://forge.codesys.com/u/timvh/https://forge.codesys.com0e020f68e2d0f2db8a644e2a44b7276e576d48d8<div class="markdown_content"><p>Yes, this is known.</p>
<p>In the device tree you can set the name of your slaves (right click => properties).<br/>
This name is the instance of your Modbus Slave.</p>
<p>To detect the error and reset the communication you can use e.g. (mbSlave1 is the name of my Modbus slave device):<br/>
IF mbSlave1.xError THEN<br/>
mbSlave1.xReset := TRUE;<br/>
ELSE<br/>
mbSlave1.xReset := FALSE;<br/>
END_IF</p>
<hr/>
<p>To get the error message you can use<br/>
VAR<br/>
bySlave1Error: IODRVMODBUS.MB_ErrorCodes;<br/>
END_VAR</p>
<p>bySlave1Error := mbSlave1.byModbusError;</p></div>Modbus: dis- / re-connect cable: modbus does not re-start2020-02-27T14:15:48.474000Z2020-02-27T14:15:48.474000Zchabhttps://forge.codesys.com/u/chab/https://forge.codesys.com23ca97a59ad55ca1bcc465457cc32534e3977250<div class="markdown_content"><p>Hi all,<br/>
Recently I used the Modbus master library (CoDeSys V3.5.3.0).<br/>
And I noticed that dis-connecting and re-connecting the serial cable does NOT restart the Modbus protocol.<br/>
Do you have any experience with (re-) starting the Modbus protocol? <br/>
Is there a way to:<br/>
- detect that the Modbus protocol is not running.<br/>
- (re-) start the Modbus protocol manually (by the application).<br/>
Any help is appreciated.<br/>
Regards,<br/>
Edwin.</p></div>