I have been trying to communication with the Industrial Relay Controller 4-Channel SPDT + UXP Expansion Port through the RS-485 Node Serial Network Communications Module SN65HVD12D. I am able to send RS-485 commands over serial but I am not able to read back any bytes. I have been trying to use E3C to read the device number and turn relays on and off but I am not receiving anything in return. Is there an ICD for the RS-485 Node Serial Network Communications Module SN65HVD12D somewhere that would help me?
are you able to turn on off the relay ?
can you share a picture of the RS485 module.
No, I cannot turn the relay on or off at all. This is a picture of the RS-485 module
The RS-485 module is connected to this board: https://store.ncd.io/product/industrial-relay-controller-4-channel-spdt-uxp-expansion-port/
I am also using a beaglebone black and the SP336EEY-L chip to convert from UART to RS-485
can you share a picture of your setup ?
make sure you are using 9600 as your RS485 baudrate.