Connection To The Master System (Bacnet Standard) - Remak VCS Installation And Operating Instructions Manual

Connection to the Master System (BacNet Standard)

BACnet/IP (BMS)
The VCS control unit enables integration of the centralized
BMS (Building Management System) using the BACnet/IP
communication standard. Using a suitably integrated mas-
ter system, it is possible to control the air-handling device's
operating state.
Generally
BACnet is a standard communication protocol for Building
Automation and Control Networks developed by ASHRAE
(American Society of Heating, Refrigerating and Air-condition-
ing Engineers). The main goal was to create a protocol which
enables the integration of systems from different manufactur-
ers intended for building automation. For detailed information
on the BACnet protocol, refer to the following websites:
www.bacnet.org
www.bacnetinternational.net
BACnet/IP Protocol
There are several variants of the BACnet protocol. The VCS
control system uses BACnet/IP for the Ethernet network.
The BACnet communication protocol works using the
Master/Slave principle. The Server function is used for VCS
unit system communication with the master system. This
means that the VCS control unit behaves like a Server in the
communication.
Protocol settings can be performed using one of the follow-
ing controllers: HMI, DM, TM or Web. Switching on and off,
List and Description of Basic Data Points
Data point name
Device
Diagnostic
SystemClock
AirQuality
RoomTmp
RmUTmp1
RmUTmp2
ValidRoomTmp
ReturnAirTmp
SupplyTmp
OutTmp
HtgFrstTmp
ExhaustTmp
PreElHtgTmp
PreWtrHtgTmp
BrnrFlueTmp
RoomHum
SupplyHum
OutHum
RmHumAbs
SplyHumAbs
OutHumAbs
RmEnth
OutEnth
ActOpMode
ActFanStep
OpModeAutoManSt.Swtch
OpModeAutoManStTmp.Swtch
restart and other settings of the BACnet server can be carried
out through the web page (calling the address set in the VCS
control unit). For detailed information on the BACnet/IP Stand-
ard (EDE file and others) settings and application, refer to the
Siemens BACnet/IP Communication Module documentation
available on the REMAK website.
The following table includes a list of basic data points which
can be used for this communication and their description.
The list includes specifications of variables for different VCS
control system variants.
For example, if the VCS control system (air-handling device)
has not been equipped with gas heating, it will not be possible
to use these variables. The final functionality, monitoring and
control options will be dependent on the integrator used to
ensure connection to the master BMS system.
Device
Diagnostics
System time
Air quality
Room temperature
HMI-SG1
HMI-SG2
Temperature in the room after control
Outlet air temperature
Inlet air temperature
Outdoor temperature
Return water temperature (water heater)
Outlet air temperature after the heat exchanger
Temperature, electric pre-heating
Return water temperature (water pre-heating)
Flue gas temperature
Air humidity in the room - relative
Inlet air humidity - relative
Outdoor air humidity - relative
Absolute air humidity in the room
Absolute inlet air humidity
Absolute outdoor air humidity
The room - enthalpy
Outdoor enthalpy
Current state of the device
Current state of the fans
Manual mode (control)
Manual mode (control)
Control units VCS
Meaning
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