RTS/CTS configuration with RS-485 server

[StewartInnes]

I'm creating a server with half-duplex RS-485 communications, so I need to enable RTS/CTS (really just RTS in my case) but I have a hardware bug that requires me to change RTS to active-high. In PySerial, I can use

serial.rs485.RS485Settings(
  rts_level_for_tx = False,
  rts_level_for_rx = True
)

to change the RTS logic.

How would you do this with pymodbus?

I did find this: #33 (comment)
But it's over 10 years old so I want to see if there's some built-in dev that I'm missing.

[janiversen]

I have no idea, it's not something you configure.

both the sync and async client uses pyserial so you might be able to patch either pyserial or where pymodbus starts pyserial.

[StewartInnes]

Thanks for the quick response! That confirmation that it's not configurable is what I needed.