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 necessar

8. Configuration Auto-Selector (via DIP switches)

Enable manufacturers to pre-load multiple predefined configurations

9. Proxy Tunnel

An SMC Cloud feature that allows users to view the web page on their remote device via the remote FieldServer

10. ProAttach

This FieldServer feature assists users enter valuable site information to enable rich analytics when analyzing or diagnosing data from all sites via the SMC Cloud

11. Virtual Data Points

A rich Edge Gateway feature that enables manipulation of device data on the FieldServer to produce useful data using a JSON logic engine embedded in the FieldServer Gateway

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


Please contact the OEM vendor of your ProtoCarrier to ask for the Start-up guide for the specific ProtoCarrier. The output protocol can be configured a number of different ways on the ProtoCarrier and the OEM Vendor will have the correct documentation on how to set it.

The ProtoCarrier mapping has been pre-configured and approved by the OEM Vendor. MSA Technical Support is not authorized to change it. Please contact your OEM Vendor to inquire about any modifications to the mapping.

Please contact the OEM vendor of your ProtoCarrier to ask for the Start-up guide for the specific ProtoNode. There are several ways of changing the Device Instance on a ProtoCarrier Gateway and the OEM Vendor will have the correct process documented in their Start-Up guides.

Recovery Mode occurs when an internal Module of the ProtoCarrier firmware has suffered a crash or corruption. A firmware upgrade will be required to resolve.

i.) Take a Diagnostic Capture and Contact Technical Support

  1. Download and install the FieldServer Toolbox.
  2. Connect to the ProtoCarrier’s Ethernet port.
  3. Hit the Diagnostic button on the FieldServer Toolbox.
  4. Take a 5-minute, Full Diagnostic of the ProtoCarrier.
  5. Email the zip file to Be sure to include your observations and what you would like Technical Support to check.