Embedded internal assembly expands OEM's addressable markets with cloud connectivity and multi-protocol support


The ProtoCarrier enables original equipment manufacturers (OEMs) to rapidly and easily add cloud connectivity and building and industrial automation protocol translation support to new and legacy devices, without the time and expense of redesigning hardware.

Sierra Monitor pre-programs the ProtoCarrier solution and maps each device to support the various protocols and configurations, including BACnet MS/TP, BACnet/IP, Modbus TCP/IP, LonWorks, and many others. No software or configuration files are required to install the device in the field.

This product is protected by FieldSafe.

Building automation protocol translation
1. SMC Device Cloud support

Register your ProtoCarrier to the SMC Cloud interface for remote access to local applications, configuration, and device management

2. Rapid time-to-market

Plug-and-play solution to OEM device for rapid deployment without having to redesign the hardware

3. Serial, Ethernet, or LonWorks Environment Support

Provide multiple protocol support for any protocol translation as a full-featured, field-programmable OEM protocol gateway solution

4. Multi-Client Support

Ensure interoperability between any industrial and/or building automation protocols

5. BACnet COV (Change of Value)

Provide fast data communication while reducing traffic over a BACnet network

6. Web Configurator

Select the user profile to load multiple configurations

7. Advanced Auto-Discovery

Automatically discover known devices on the network and be configured to provide the protocol translation necessary

  • Easily support one or multiple of the same or different devices without having to build any specific configuration files
  • Automatically build the configuration file of known devices and download the file
8. Configuration Auto-Selector (via DIP switches)

Enable manufacturers to pre-load multiple predefined configurations

  • Store multiple predefined configuration files
  • Select the active configuration file with DIP switches on the fly
  • Utilizing the FS-GUI (Graphical User Interface), a different configuration file can be downloaded
  • Up to a maximum of 1000 Modbus registers can be included in a configuration file
Power Requirements

Power: 9-30 VDC or 12-24 VAC
RS-422: 15-30 VDC or 12-24 VAC


Current draw @ 12 V

  • FPC-C34 @ 12 V = 240 mA
  • FPC-C35 @ 12 V = 250 mA
  • FPC-C36 @ 15 V = 200 mA
  • FPC-C37 @ 15 V = 210 mA

Operating Temperature: -40o to 167oF (-40o to 75oC)
Relative Humidity: 5 to 90% RH, non-condensing


Dimensions (H x W x L): 1.2 x 2.2 x 4.2 in. (3.0 x 5.6 x 10.7 cm)
Mounting Holes: Six (6) holes for easy placement


Serial RS-485:

  • Galvanic isolation
  • Baud: 9600, 19200, 38400, 57600, 76800, 115200


  • 10/100 BaseT
  • MDIX
  • DHCP
BACnet Support (BTL Marked)
  • Alarm and Event notification read properties multiples, and more (see PIC Statement)
  • BACnet COV's, 20,000
  • Support up to 2,000 Host & Field points
  • DIP switches are for setting MAC Address, Node-ID, Baud rate on the RS-485 Field protocol
LonMark Certification on the ProtoCarrier

SPID: 80:00:95:46:00:84:04:06


  • 0000 – Node object (1)
  • 0001 – Open Loop Sensor Object (5)
  • 0003 – Open Loop Actuator Object (5)

Various ProtoCarriers have the following third party approvals:

  • BACnet Testing Labs (BTL) B-ASC
  • LonMark 3.4 Certified – ProtoNode LER Series
  • TUV approved to UL-916, EN 60950-1, EN 50491-3 and CSA C22-2 standards
  • RoHS Compliant
  • DNP3 Conformance Tested
  • CE & FCC Approved
  • WEEE

Two years return to factory