User Manual

BACnet networks with MS/TP trunks
Application examples
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The BACnet MS/TP IP router connects the BACnet/IP network to the different BACnet MS/TP networks on
the floors. Note that each network must receive a unique network number.
Local and global broadcasts are not critical for this amount of devices, rooms, and plants, i.e. BBMD
configuration is not required.
Each Desigo PXC.. automation station should have FDT functionality for maintenance and diagnostics and
remote access.
Planning and implementation, HVAC and room automation
Plant scope:
● Desigo PXC…E.D to control primary plants.
Building scope:
● Desigo PXC00-E.D for superposed functions, e.g. scheduler for occupancy and use times by floor and
monitoring Desigo room automation stations.
● Desigo DXR2.E18 for central functions over multiple floors.
Floor scope:
● Desigo DXR2.E exclusively for central functions.
● Desigo DXR2.M.. for rooms with HVAC, lighting, and blinds, or room segments with HVAC.
● PXG3.M BACnet-MS/TP IP router.
If project implementation permits (from a cost standpoint), we recommend distributing monitoring of
Desigo room automation stations or schedulers for the floors over different monitoring units (PXC00-E.D).
Planning and implementation of central functions
Central function 1st floor
Tenant A
Floor 1
Tenant B
Floor 2
Tenant C
Floor 3
Tenant D
The entire building,
across floors
Hardware AS1001 AS2001 AS3001 AS4001 AS5001
Central weather
station
CenWthStn
Central setpoint
generation via
seasonal
compensation
CenSsn
Central operating
mode determination
CenOp_EG CenOp_1OG CenOp_2OG CenOp_3OG
AS500
Scheduler for room
operating mode
SchedOp0
Scheduler, room
operating mode
ground floor
SchedOp1
Scheduler, room
operating mode 2nd
floor
SchedOp2
Scheduler, room
operating mode 3rd
floor
SchedOp3
Scheduler, room
operating mode 4th
floor
Central operation
lighting
CenOpLgt_EG CenOpLgt_1OG CenOpLgt_2OG CenOpLgt_3OG
AS500
Scheduler for
lighting, building
occupancy
SchedLg0
Scheduler, lighting
occupancy, ground
floor
SchedLg1
Scheduler, lighting,
building occupancy,
2nd floor
SchedLg2
Scheduler, lighting,
building occupancy,
3rd floor
SchedLg3
Scheduler, lighting,
building occupancy,
4th floor
AS500
Scheduler for
lighting, system
operation
SchedLg6
Scheduler, lighting
system operation
Ground Floor.
SchedLg7
Scheduler, lighting
system operation
2nd floor.
SchedLg8
Scheduler, lighting
system operation
3rd floor.
SchedLg9
Scheduler, lighting
system operation
4th floor.
Central emergency
function lighting
CenEmgLgt_EG CenEmgLgt_1OG CenEmgLgt_2OG CenEmgLgt_2OG
Central emergency
lighting (overall)
CenEmgLgt
Central shading
operation
CenOpShd_EG CenOpShd_1OG CenOpShd_2OG CenOpShd_3OG