+- Logic Machine Forum (https://forum.logicmachine.net)
+-- Forum: LogicMachine eco-system (https://forum.logicmachine.net/forumdisplay.php?fid=1)
+--- Forum: Gateway (https://forum.logicmachine.net/forumdisplay.php?fid=10)
+--- Thread: Modbus error CRC (/showthread.php?tid=3885)
Modbus error CRC - CristianAgata - 19.02.2022
Hi everybody,
I've this error (see attached file) on a modbus system.
Any suggest?
RE: Modbus error CRC - admin - 21.02.2022
This usually means there's a problem on the physical bus level.
Make sure that parity and stop bits settings are correct. Check if GND is connected between LM and the Modbus device. A termination resistor might be needed as well. Also check AC polarity on both LM and the Modbus device. There was a report where one of the power supplies has AC polarity connected in reverse and this caused communication issues.