I am trying to connect my RSUSB module to my PC (which is standing 10m further)
I bought an RS232 cable (10m), and a rs232=>usb adapter.
I measured the pinout of the rs232 cable and connected it to the VMBRSUSB module. (SG SG DTR- Rx RTS+ Tx)
My computer will not find a connection with the velbus module in this configuration.
What is possibly wrong, or what should i check?
Is there a more common way to make this kind of connection?
Thanks in advance!
I’ve never had much luck with the RS232 port.
However, I have got two great active USB extension solutions.
One for 3M and the other for up to 40M.
Fixed 3M (which you could link two together)
Velbus uses all pins within an RS232 connection - whereas many cheap cables do not - I managed to have a Cisco RS232 config cable working but quickly switched over to the server version of Velbus-TCP.
For some reason I never managed to get the external RS232 connectors to work either (the actual port next to the USB port worked, but the pin-out did not) - I always thought it was related to my RS232-USB converter at the time… and I’m still waiting for Velbus to make the USB connections available in the terminals in a newer version - but perhaps Signum is the future for them
In my cabinet I installed a small computer (odroid C4) - powered by the Velbus 15V input - and hosted Vel-Serv on that… now I can connect to my Velbus system from any computer connected to the Wifi/Network… see: OpenHab / Velbus-TCP (wordpress.com)