Hi, I am trying to collect data remotely from a trimble survey equipment, which has a RS232 connection, using TRB255. I could not get it to work.
I wired TX to 2; RX to 3; CTS to 7; RTS to 8. I wired it like a null modem because they're both DCE.
On the computer side, I used com0com+com2tcp to create a virtual com port and redirect to TCP. I could see the connection in TRB255's realtime data page, but it looks like the command did not go through. I tried HW VSP3 but it seems buggy to me as it gets frozen quite a lot.
The sim card we use has public IP. Is there some sort of settings in the router that could have blocked the serial command?