RS485 Communication error

[Ajinkya09]

I'm trying to read the temperature sensor (Pt1000) value from Node-RED.

Connection: The Pt1000 sensor is connected to a digital converter, which converts the readings into digital values. The converter is connected to the RS485 socket of the Revolution Pi (running Raspbian OS). I tried to read the value on NodeRED but encountered an error.
refer attach picture.

[dirk]

Hello Ajinkya09, thank you for your detailed description of the error. Please send me an SOS report.
Revolution Pi SOS Report

[dirk]

Hi Ajinkya09, now we remembered one more thing, you are using /dev/ttyAMA0 - this is the UART that is connected to the PiBrige. So that can't work. With RevPi Connect (+)/S/SE the correct UART is /dev/ttyUSB0