I believe I have the basic structure figured out on the Gateway. I have spent the majority of today researching information on both the Gateway and LCI-R board. I have requested information regarding the control structure required to run the unit, but unfortunately for some reason they do not want to release information on their internal controls. The main issue that I am facing is a lack of support from Trane. The Modbus master will issue control commands and record status variables. There are a total of (4) units linked with the gateways as slaves connected to a Modbus master device. Each AC unit has (1) one LonTalk Communications Interface (LCI-R) board connected to (1) one LonWorks to Modbus Gateway device (Babel Buster 485). I have been tasked with configuring a Modbus control interface to the units.

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Pm 5340 modbus rtu over tp