TenaciousTech

So to recap on this.... If running unmodified original firmware 52.30 with Noctua fans, the issues as outlined above with low fan speeds and how the inverter reads the speeds shouldnt be an issue? Looking at the Noctua NF-A8 PWM fans, have always loved noctua fans for quietness and reliability.

I don't think so, have you got the RS232 Protocol document from Pylontech?

Thanks for that.. My RS485 adapter looks identical to the Victron cable. https://au.element14.com/ftdi/usb-rs485-we-1800-bt/cable-usb-rs485-serial-converter/dp/1740357?CMP=KNC-GAU-GEN-DSA-RLSA-CABAN&mckv=suW9qv96u_dc|pcrid|114865409088|pkw||pmt|b|slid||product||pgrid|18902993448|ptaid|aud-289888640566:dsa-82306211808|&gclid=CjwKCAjwq-TmBRBdEiwAaO1enwTQfXTsa26cgiRw5qbFjounQmNxisD2ssyN5S8PR_Wp7TkXE7C0XRoCyOsQAvD_BwE Are you using the terminator wires in parallel with A & B?

i'm just getting nothing out of my pylons over RS-485, even with your Pylon script. Have you guys found them temperamental with usb to rs285 adapters? I've tried 3 different units. No luck.

ICC only supports RS232 communications. You'll need Manie or Riaan to configure ICC for the Pylontech battery RS232 comms. Mainly i think they specify the baud rate. They actually sell a dedicated lead that forces baud rate for the Pylon batteries... As a bypass on ICC though, connect your laptop up via rs232 to the pylontech (this sets the batteries baud rate to the right one) then unplug without disconnecting from battery view, then try rs232 comms to ICC... Should work.

So to follow up on one of the OP questions, do we need to include termination resistors to get the RS485 connection to work? Or are they already in circuit in the battery? Thanks guys