Wondering if there is anything wrong with the send message I created by reviewing the few screenshots I provided. From everything I can tell the comms parameters are properly matched and I think I am using the correct syntax. I have 120ohm resistors at both ends of the cable and I'm using twisted/shielded cable with drain wire landed at one end (also tried with both ends). The cable is only 25 feet long.

The send instruction is intended to change setpoint on the temperature controller to 37 Celsius. I appreciate the help, in advance.