This document describes the design of an Open UMCS Front End and the integration of field control systems into the UMCS, both in accordance with UFGS 25 10 10. This includes hardware, software and, in some cases, networking for the UMCS Front End. With few exceptions, requirements for field control systems, including controllers, networking, and sequences of operation, are not included in this criteria or UFGS 25 10 10 and are addressed by the relevant field control system criteria and specifications.
The UMCS front end required by this criteria and specified in UFGS 25 10 10 will openly interoperate with systems and subsystems installed in accordance with the building control system specifications (UFGS 23 09 00 Instrumentation and Control for HVAC, UFGS 23 09 23.01 LonWorks® Direct Digital Control for HVAC and UFGS 23 09 23.02, BACnet Direct Digital Control for HVAC). UFGS 23 09 23.01 contains specific requirements, such as the use of LonWorks Network Services (LNS), which provide for open integration to a UMCS installed using the complementary options contained in UFGS 25 10 10. UFGS 23 09 23.02 contains similar specific requirements for a BACnet-based system. Both UFGS 23 09 23.01 and UFGS 23 09 23.02 contain options for use of the Niagara Framework.