read & write serial data from USB device?

Projects General Guidance
1

I'm a really noob regarding that stuff, so please forgive for missing info in the opening thread.

The problem i need to solve: There is a device that can be accessed over serial. I has and integrated FTDI chip to level the RS232 signals of the CPU to TTL.
When i connect this USB to my PC i get a serial device and can program the device.

What confuses me a lot now: Can i connect an Arduino to this micro usb, add a new serial port on D1&D2 and read and write to those pins (and display that data on "serial monitor" to see that everything works correctly?

2

No.

If you can remove the FTDI USB adapter and plug the Arduino TX and Rx directly that will be easier.

3

But then i have there RS232 level signals that would destroy the Arduino, right?
I will need to adjust those levels to 5V max first.

4

izeman:
But then i have there RS232 level signals that would destroy the Arduino, right?
I will need to adjust those levels to 5V max first.

Then you will have to use a MAX232.