Professional company looking to contract someone to configure node-RED to decode and sort data from a RS-232 interface to a HVAC system.
The HVAC system sends the status of 18 thermostats every minute. Each info-frame has a code to identify what information is contained in the info-frame and the address of the thermostat.
each info-frame needs to be routed based on the "data type" and "thermostat address".
The info-frame is JSON with 13 indexes. Each index is one byte in hexadecimal.
The "data type" code is made up of four indexes (4 bytes). The "thermostat address" is made up of two indexes (2 bytes). The "value" is made up of two indexes (2 bytes). Data which is more than one byte has been "byte packed" and will need to be unpacked.
These info-frames after being sorted/routed will be send to BACnet objects on a BACnet controller. Knowledge of the "node-red-contrib-bacnet" is not critical for this project but will be helpful.
Please message me if you are interested. (USA)
email me seth (at) cisinlabs (dot) com
