Appendix E: LonWorks Protocol Implementation Conformance StatementRTU Open v3 Carrier Proprietary and Confidential CARRIER CORPORATION ©2016Integration Guide All rights reserved51Vendor Name: CarrierProduct Names: RTU OpenProduct Model Number: RTU OpenProduct Description:The RTU Open is a factory-installed rooftop controller that is capable of speaking multiple protocols. When theLonWorks Option Card (LON-OC), is installed in the field, it enables the RTU Open to communicate over a LonTalknetwork. The RTU Open does not conform to a standard LonWorks profile, but is self-documenting and anynetwork management tool can manage and configure it over the network. An external interface file (.XIF), is alsoavailable so that any network management tool can design and configure the RTU Open prior to installation.Contact your Carrier representative for this .XIF file.LonWorks is an open protocol that requires the use Echelon's Neuron microprocessor to encode and decode theLonWorks packets. In order to reduce the cost of adding the Echelon chip to every module, a separate LonWorksOption Card (LON-OC) was designed to connect to the RTU Open.This accessory card must be ordered separately and is connected by attaching its ribbon cable into the J15connector on the RTU Open. The RTU Open’s baud rate (DS1 and DS2 on SW3) must be set to 38.4k tocommunicate with the LON-OC. The address switches (SW1 and SW2) are not used with LonWorks.Transceiver Type: TP/FT 10Appendix E: LonWorks Protocol Implementation Conformance Statement