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Comm connection from USB port SAMBA 43JTA22

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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).

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  • 8 months later...
On 4/28/2023 at 7:43 AM, Pavel_setnicar said:

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.

So is there a way to get around this? Serial adapter on the arduino?

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