Yukiko Posted April 26 Report Share Posted April 26 It is possible to communicate with another microcontroller (like Arduino) using the USB port (micro B ) directly connected to a port Mini usb controller ??? Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted April 26 MVP 2021 Report Share Posted April 26 Not really. You need a driver on the PC to communicate with the USB port on the Samba. Typically you use the RS232 (RJ12) port on the PLC. Joe T. Quote Link to comment Share on other sites More sharing options...
Fernando Castro Posted April 27 Report Share Posted April 27 17 hours ago, Joe Tauser said: Not really. You need a driver on the PC to communicate with the USB port on the Samba. Typically you use the RS232 (RJ12) port on the PLC. Joe T. complementing Joe's answer that USB port is actually an USB to RS232 converter embedded in the PLC. In any case, it is easier to use directly the serial port into the PLC the RJ12 (both are physically the same com). Quote Link to comment Share on other sites More sharing options...
Pavel_setnicar Posted April 27 Report Share Posted April 27 And arduino as I know operate on TTL signals logica l"1" is +5 0r 3V, logical"0"is 0V. Serial ports on samba are real RS232 signals (+-10V) where logical "1" is -10V and logical "0" is +10V. Quote Link to comment Share on other sites More sharing options...
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