Question

Hi,

I have successfully sent serial (rs485) modbus data to my server from the RUT955. I am reading a 32 bit float point variable but the data being received is broken down into bytes and in decimal. (67,110,14,168) I can get the correct value by converting each byte to binary and then putting the binary data into a IEEE754 converter.

Is there a way to send the converted value? Thanks.

Comments

I'm having trouble getting this setup to work. Could you give me a hint, how did you connect the modbus slave? To the R_N and R_P pins (middle two pins)?

When i check my firewall i see no data coming from the router, despite having Modbus Serial Master (RS485) and Data to Server enabled.

Answer 1

Hello,

Rut955 acts as a Modbus Master and you are using Modbus Data to Server to send data?

What protocol are you using? HTTP(S) or MQTT?

Comments

Hi. Thanks for your reply.  I am using MQTT protocol.

Answer 2

You need to link out the dp and rp terminals and the dn and rn terminals. Centre pins to the left pin beside them.

Comments

Thanks alot, it's working now!