Frodeg Posted December 7, 2015 Report Share Posted December 7, 2015 I use Com port 2 to Modbus, Com port 1 i want to use to a modem. But as son as i change Tx/Rx to Modem the Modbus communication at Com 2 stop, when change back to Tx/Rx and repower, Modbus work again. Should this work? Quote Link to comment Share on other sites More sharing options...
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