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Hi all. Pretty new to all this and trying to get a Pi running Codesys talking to an Arduino Nano using Modbus RTU. Have used the following post for reference but am failing.
The pi is online but Modbus master and slave have red triangles next to them in device tree and slave states 'not running' . Tried different USB ports.
If anyone has any pointers or better examples that'd be appreciated.
Thanks
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Well.... Good news is I got it working with some other code however have the same problem mentioned in a few other places regarding the connection not restarting if lost. I can unplug the Arduino and re-plug but it never reconnects. Using the auto-reconnect checkbox 'ON,' causes it to never work in the first place and results in a flashing re/orange triangle next to the slave.
Anyone know a way to reset the modbus master?
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi all. Pretty new to all this and trying to get a Pi running Codesys talking to an Arduino Nano using Modbus RTU. Have used the following post for reference but am failing.
https://forge.codesys.com/forge/talk/Runtime/thread/634eb0e582/?limit=25#0f41
The Arduino code/libraries seem to have changed but have used the new one and the example advanced_slave code from it here
https://github.com/smarmengol/Modbus-Master-Slave-for-Arduino
The pi is online but Modbus master and slave have red triangles next to them in device tree and slave states 'not running' . Tried different USB ports.
If anyone has any pointers or better examples that'd be appreciated.
Thanks
Well.... Good news is I got it working with some other code however have the same problem mentioned in a few other places regarding the connection not restarting if lost. I can unplug the Arduino and re-plug but it never reconnects. Using the auto-reconnect checkbox 'ON,' causes it to never work in the first place and results in a flashing re/orange triangle next to the slave.
Anyone know a way to reset the modbus master?