According to the manual, the settings for V130/ V130J/V430J/ V350/V350J are all the same.
So I think it should work.
With RS232 (RJ12) it is terminals 3, 4 and 2 as you write.
With RS485 (RJ12) it is terminals 1(A) and 6(B).
If you have an Ethernet interface, Modbus TCP would also work. But I think you have to buy it as an option.
But with RS485 it says in the manual that you have to open the V350 device.
To access the jumpers, you must open the
controller according to the instructions
beginning on page 10.
Remote diagnosis is not that easy.
Unfortunately, I do not know these devices ... Sorry