KNX to BACnet IP QuickServer Gateway

A FieldServer protocol gateway that provides data exchange between KNX and BACnet IP.
The Classic QuickServer is a high performance, fully configurable, cost effective Building and Industrial Automation gateway for integrators to easily interface devices to networks in commercial buildings and industrial plants.
The BACnet/IP driver enables the FieldServer to facilitate data exchange with devices over Ethernet using the BACnet/IP protocol.
The KNX driver allows the FieldServer to transfer data to and from devices using KNX protocol.


The BACnet/IP driver allows the FieldServer to transfer data to and from devices over Ethernet using BACnet/IP protocol. The FieldServer can emulate either a Server or Client.

All information in a BACnet system is represented in terms of objects. The Object_Identifier is a 32-bit code that identifies the type of Object (also identified by the Object_Type Property) and its "Instance" number, which together uniquely identify the Object within its BACnet device. Theoretically, a BACnet device could have over four million Objects of a particular type. The Object_Name is a text string, which has a unique capability.

BACnet devices may broadcast queries for devices that contain Objects with a specific Object_Name. This can greatly simplify project setup.

Every BACnet device must have a Device Object, which provides details about the device and its functionalities to other networked devices. Before engaging in control communications, a BACnet device must acquire pertinent information from the Device Object of the target device. Unlike other Objects, the Instance number of the Device Object must be unique across the entire BACnet internetwork, serving as the device's distinct identifier. This uniqueness facilitates easy identification of the BACnet device during installation and operation.

Standard object types are used to hold real time data and other information. Each Object Type is referenced by a number, for example 0 represents an Analog Input. See Appendix D.1 for abbreviation list.

Each Object consists of a number of prescribed properties, the main property being the Present_Value. Objects are monitored and controlled through their properties.

Classic QuickServer Gateway (KNX)

Sierra Monitor is a leader in protocol gateways for the building automation industry, enabling system integrators and developers to prepare building automation and process control infrastructures for the future by breaking down protocol barriers.

With the QuickServer KNX Gateway, FieldServer enables data access from KNX networks to devices and networks utilizing open and proprietary protocols such as BACnet, Modbus, LonWorks, Metasys N2 by JCI, SNMP and more. With over 100 protocols available in the extensive FieldServer Driver Library, no other product can connect KNX to more products!

FieldServer is in thousands of installations with over 700 translation paths. These gateways are LonMark certified, BACnet compliant, Metasys N2 compatible and mission-critical tested.

QuickServer is a galvanic-isolated translator device on KNX/TP installations with control and monitoring capabilities. All EIS data types are supported, allowing communication to any kind of KNX devices in the installation, such as temperature sensors, shutters, light switches, actuators, alarms etc.

Each QuickServer includes browser-based tools to make it easy to set-up QuickServer and perform diagnostics including determination of status, network settings, node information, map descriptors and more. The USB flash drive also includes the Discovery utility to determine what FieldServers are on a network.


The KNX driver allows the FieldServer to transfer data to and from devices using KNX protocol. The Fieldbus connection is included with the FieldServer. The FieldServer can emulate a Passive Client.

The KNX driver enables data access from KNX networks to other FieldServer protocols. Most KNX data point types are supported, allowing communication to almost any kind of KNX device in the installation, such as temperature sensors, shutters, light switches, actuators, alarms etc. This allows BMS systems to access a KNX network using direct read and write of KNX configured groups. This setup does not require the use of ETS4 to configure the QuickServer KNX gateway.

The KNX protocol is a connectionless protocol and therefore supports multiple clients and multiple servers.

The QuickServer is intended to act as a Passive Client on the KNX bus and make information available to other protocols. 

I'd like to inquire about the KNX to BACnet IP QuickServer Gateway FS-QS-1240-1089. Please provide me with a quote for this product.


Classic QuickServer Gateway (KNX)

Classic QuickServer Specs: FS-QS-1X4X

Depending on what hardware you require, the specifications will contain different options..

  • Operating Temperature: -40 to 75°C (-40 to 167°F)
  • Relative Humidity: 5-90% RH non-condensing
Power Requirements

9-30V DC or 12-24V AC
(RS-422 = 15-30V DC or 12-24V AC)
(M-Bus = 12-24V DC)
Current draw: @ 12V

  • FS-QS-1010, FS-QS-1210, FS-QS-1220: 240 mA


  • Slave: 550 mA @ 12V
  • Master (1 Slave): 580 mA @ 12V
  • Master (64 Slave): 980 mA @ 12V
Physical Dimensions
  • Dimensions (WxDxH): 4.5x2.9x1.6 in. (11.5x7.4x4.1cm
  • Weight: 0.4 lbs (0.2 Kg)
  • Input voltage: 24 V DC nominal: 10-30V DC

Configuration/Diagnostic utilities

  • Capacity: 250 points (FS-QS-104X), 500 points (FS-QS-124X), 3000 Points (FS-QS-134X), 5000 Points (FS-QS-144X)
  • Table, Wall or DIN rail mount
  • Baud: 4800, 9600, 19200, 38400, 57600, 115200
  • Start Bit: 7, 8
  • Stop Bit: 1, 2
  • Parity: Even, Odd, None
LonMark Certification on the QuickServer FS-QS-1XX1-XXX
  • SPID: 80:00:95:46:00:84:04:01
  • Profiles: 0000 - Node object (1), 0001 - Open Loop Sensor Object (5), 0003 - Open Loop Actuator Object (5)
  • Ethernet: 1, 2
  • Parity: 10/100 BaseT
  • TUV Approved: to UL 916, EN 60950-1, EN 50491-3 and CSA C22.2 standards
  • BTL Mark:
  • LonMark Certified: (FS-QS-1011 and FS-QS-12X1)
  • RoHS Compliant
  • GOST-R Certified
  • CE and FCC


Block Diagrams

BACnet Combined Block Diagramimports/blockDiagrams/LP KNX.jpg

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