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WILO Nordic AB

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The most important building operation terms

Address: Prerequisite for the communication with devices within a bus system.

Actuator: Counterpart to a sensor. Converts electrical signals of a control into (mostly) mechanical action such as pressure and flow, for example.

BACnet: Internationally standardized, non-proprietary standard for data communication in building automation systems (ISO 16484-5).

Baud: Unit of speed for serial data transfer. Example: 9600 Baud = 9600 bit/s.

Bit: Smallest information unit, recognises only two statuses: Zero (0) or One (1); see also Byte

Bus: Pipeline system for the exchange of data between several hardware components.

Byte: Information unit, comprised of 8 bits

CAN: Serial bus system originally developed for the automobile industry, which, in the meantime, is used frequently in automation technology.

CANopen: Extension of the CAN standard to include application-related definitions, electronic data sheet files and profiles. Makes system integration easier and was developed by the CAN in Automation (CiA) association.

Facility management
: Integrated consideration of buildings, real estate and operational sequences, with the objective of sustainably lowering the operating and administrative costs, to make the fixed costs more flexible, to secure the technical availability of the systems and to retain the value of the buildings and systems long-term.

Gateway: Device which converts the protocols of different bus systems, thereby making it possible to connect different networks. Data to be transmitted must be defined individually for each application (see also: router).

Building automation: Building automation is divided into three levels. The field level, the automation level and the management level. The control centre is on the uppermost level, namely the management level.

IF-Module: Plug-in module for upgrading electronic pumps with analogue and digital and interfaces.

: Infrared interface for wireless communication between the electronic pumps and a pump monitoring device (PDA).

IR stick: USB infrared interface for wireless communication between the electronic pumps and a PC.

LON: Open vendor-independent bus system, primarily for building automation.

Master/slave: Bus architecture in which an upper-level station (master, active) controls communication with the other devices (slaves, passive). See also Multimaster.

Modbus: Communication protocol based on a master/slave architecture. The Ethernet and RS485 are used as transmission media. Widespread in industrial and building automation applications.

Multimaster: Active access to several devices (masters) on a bus. Important for the formation of a network with distributed intelligence.

Optional module: Module for extending the functional scope or interfaces of all Wilo products and pumps. For pumps, IF-Modules are used.

PDA: Personal Digital Assistant. Small personal computer with an SDIO slot for memory cards or other hardware components. Basis for the IR communication with Wilo electronic pumps.

PLR: Pump central computer. Published pump protocol for digital communication with Wilo electronic pumps for the purpose of integration in the building automation system.

Profibus: Industrial databus with multimaster communication capabilities.

Router: Device which forwards messages between different networks. Only the communication parameters, and not the individual data to be transferred, need to be defined for the application (see also: gateway).

RS232: Serial data interface between computer and a printer or screen, for example.

RS485: Industrial serial bus interface. Hardware platform for different bus systems.

Interface converter (DigiCon)
: Bus-capable device, which converts the data of one interface into another.

Interface module: See IF-Module

Sensor: Technical component which converts certain physical characteristics, such as pressure or flow, into signals.

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