Sorry to bother you with such questions, is there any chance to acquire data from an Eliwell TTL port without using a bus adapter? I have an EWPlus940 EO that I'm trying to get data from, using a usb to ttl adapter(FTDI and Prolific). After some research I think I have found the pinout of that (1-Gnd, 3-Rx, 4-Tx), not sure... One strange thing, after entering the password, there is no "add" menu to change from Televis protocol to modbus.

Any help would be gladly appreciated!