Communications protocols - Facility Explorer - LIT-12011657 - Accessory - Field Device - 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
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
2022-07-19
Product status
Active
Language
English

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

PCG and PCV devices are BTL-listed as BACnet Application Specific Controllers (B-ASCs). The PCA controllers are BTL-listed as BACnet Advanced Application Controllers (B-AACs). The NS Series Sensors are BTL-listed as BACnet Smart Sensors (B-SSs).

The PCA4911 communicates using the BACnet/SC or BACnet/IP communication protocols. Use CCT Release 10.1 or later to switch the Field Bus communications protocol in supported 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 section of the Controller Tool Help (LIT-12011147) for information about mapping N2 Objects in controllers with switchable communications protocols.

You can use the N2-capable FX-PC Controllers as functional replacements for legacy N2 controllers. The N2-capable FX-PC Controllers include the following features and settings:

  • The I/O quantities and characteristics of the FX-PC family controllers
  • Must be programmed with CCT
  • Support SA Bus devices
  • Support 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 the following features or settings:
  • Zone Bus, for example, TMZ sensors and M100 actuators
  • Passthrough in the commissioning mode
  • Remote downloading or commissioning using BACnet routing
  • Wireless connection to the N2 bus