Switchable communications protocols - Facility Explorer - LIT-12011657 - Accessory - Field Device - BTCVT Wireless Commissioning Converter - FX-PCA26 Advanced Application Programmable Controller - FX-PCA36 Advanced Application Programmable Controller - FX-PCA49 Advanced Application Programmable Controller - FX-PCG16 General Purpose Programmable Controller - FX-PCG26 General Purpose Programmable Controller - FX-PCV16 Programmable VAV Box Controller - FX-PCV18 Programmable VAV Box Controller - FX-PCV19 Programmable VAV Box Controller - FX-PCX17 Expansion Input/Output Module - FX-PCX27 Expansion Input/Output Module - FX-PCX37 Expansion Input/Output Module - FX-PCX47 Expansion Input/Output Module - Handheld VAV Balancing Sensor/Tool

FX-PC Series Programmable Controllers and Related Products Product Bulletin

Brand
Facility Explorer
Product name
BTCVT Wireless Commissioning Converter
FX-PCA26 Advanced Application Programmable Controller
FX-PCA36 Advanced Application Programmable Controller
FX-PCA49 Advanced Application Programmable Controller
FX-PCG16 General Purpose Programmable Controller
FX-PCG26 General Purpose Programmable Controller
FX-PCV16 Programmable VAV Box Controller
FX-PCV18 Programmable VAV Box Controller
FX-PCV19 Programmable VAV Box Controller
FX-PCX17 Expansion Input/Output Module
FX-PCX27 Expansion Input/Output Module
FX-PCX37 Expansion Input/Output Module
FX-PCX47 Expansion Input/Output Module
Handheld VAV Balancing Sensor/Tool
Document type
Product Bulletin
Document number
LIT-12011657
Revision date
2019-12-06

The FX-PC Family Controllers and network sensors communicate using the standard BACnet protocol, based on the ANSI/ASHRAE 135-2008. The BACnet protocol is a standard for ANSI, ASHRAE, and the International Standards Organization (ISO) for building controls.

FX-PCG, FX-PCX, and FX-PCV Field controllers are BTL-listed as BACnet Application Specific Controllers (B-ASCs). FX-PCA field controllers and the PCV1930 Field Controller are BTL-listed as BACnet Advanced Application Controllers (B-AACs). The NS Series Sensors are BTL-listed as BACnet Smart Sensors (B-SSs).

Release 10.1 of the Controller Configuration Tool (CCT) 13.0 and later can be used to switch the Field Bus communications protocol in supported FX-PC Controllers to be either the standard BACnet MS/TP or the N2 protocol. All new controllers use either BACnet MS/TP as the default communications protocol, or BACnet/IP. Switchable communications protocols in the MS/TP models provide a cost-effective upgrade and modernization path for customers with existing N2 controllers.

The Modernization Guide for Legacy N2 Controllers (LIT-12012045) and the controller-specific documentation provide installation and commissioning support and include tips for efficient and safe replacement. Refer to the N2 Compatibility Options chapter of the Controller Tool Help (LIT-12011147) for information about mapping N2 Objects in controllers with switchable communications protocols.

The N2-capable FX-PC Controllers can be used as functional replacements for legacy N2 controllers. The N2-capable FX-PC Controllers:

  • have the I/O quantities and characteristics of the FX-PC family controllers
  • must be programmed with CCT, which have programming capabilities that are similar (but not identical) to HVACPro, GX9100, GPL, and other legacy tools
  • support SA Bus devices
  • support FX-WRZ wireless sensors from the controller using the FX-WRZ7860 receiver when configured for BACnet MS/TP communication
The N2-capable FX-PC controllers:
  • do not support Zone Bus (for example, TMZ sensors and M100 actuators)
  • do not support passthrough in the commissioning mode
  • do not support remote downloading or commissioning using BACnet routing
  • do not support wireless connection to the N2 bus