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.
Quote manual:
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
