Field Server


FieldServer Technologies is a wholly owned division of Sierra Monitor Corporation, a publically traded company traded under OTC, SRMC, OB.


FieldServer Technologies designs and markets a broad line of devices that enhance communication between various instruments, systems, machines and other devices that utilize noncompatible data protocols. The FieldServer combined with the extensive driver library makes the perfect package to achieve interoperability. Drivers included in this library are Modbus, LonWorks BACnet, JCI Metasys, DH+, Profibus, plus drivers for fire alarm panels, controllers, and many other devices.
The primary purpose of FieldServer products is to allow communications over Ethernet (IP) with delivery to client devices in a format which is immediately useful to the client device. Ethernet drivers include Modbus TCP, BACnet Ethernet, EtherNet/IP, BACnet IP, Allen Bradley CSP and more. FieldServer Technologies meeting the interoperability needs of facilities managers and process control engineers at


FieldServer Technologies gateways are used in various industries worldwide. The FieldServer has helped many integrators perform the interoperability between devices and systems that the customer needed. Both system integrators and equipment manufacturers have come to FieldServer Technologies to find the solution they needed. Following are a few of the examples of such applications. Contact P.A.S. Technologies Sales Team at for further information.


  • Fire Alarm Control Panels — FieldServer has protocol drivers for all major Fire Alarm Control Panels
  • LonWorks/VESDA/Modbus – Aboard U.S. Navy Advanced- Tech Zumwalt Class Destroyer
  • Modbus/Simplex/BACnet IP — University of Arizona campus- wide interface
  • Modbus/Aritech/SNMP – South Africa World Cup Soccer Stadiums
  • Modbus/GE-EGD – Data Center Cooling Devices
  • Modbus/BACnet-IP – Computer Room Air Handling
  • Caterpillar/BACnet IP — South Pole Power Generator interface
  • DataAire/Liebert/Siemens — Multiple AC Controls interface to BAS
  • Metasys/LonWorks — FieldServer on Duty with the U.S. Army
  • Modbus/LonWorks — Interoperability Solution for Large Custom Home in Bermuda
  • Modbus/INet — FieldServer Enables Integration of Multiple Devices at Albuquerque Academy
  • EST3 to BACnet/IP — Allen County Public Library systemwide interface
  • FieldServer with Math Functions — University of Arizona utilizes FieldServer Math functions for distributed intelligence