Example for planning and implementing a project:
Project Description
- New office building with room automation for 136 rooms over 4 floors as well as preparing the appropriate primary plants.
- Each floor is leased by another tenant and has its own occupancy and use, i.e. the room operating mode as well as associated room setpoints, lighting per floor with central operation, and emergency function over all floors.
- Blinds control for each facade, including protection, service, and emergency function over all floors, a central weather station, demand-control of primary plants.
- Schedulers together with a calendar for room operating modes and lighting for each floor, superposed functions on a monitoring device.
- Primary plants for air handling, heat generation and distribution as well as central distribution of refrigeration on equipment rooms.
- Primary plants and general: 5 PXC4.E16-2 and 1 PXC5.E003
- Desigo room automation: 121 DXR2 or PXC3.E…
- Network infrastructure: Visualization and monitoring in the event of failure
Functional display of an example topology
Planning and implementation, IP network
Core level
A core switch is not needed since everything is located on one IP segment.
Distribution level
In the distribution level, in the riser zones, i.e. floor distributors:
- Unmanaged layer 2 switches are planned that are connected with copper cable.
- A managed layer 2 switch is planned for network diagnostics and troubleshooting where a management platform is connected. An unmanaged layer 2 switch can be used as well if the customer has no special requirements.
Edge level
Only unmanaged layer 2 switches are planned as edge switches. The following applies:
- Important rooms / Desigo room automation stations are implemented in a star topology on a distribution switch or remote edge switch.
- Unimportant rooms / Desigo room automation stations (max. 20) are networked in a line topology (daisy chain).
- Central functions / Desigo room automation stations are implemented using star cabling on the layer 2 switch (e.g. AS4001).
- PXC… for the primary plants and superposed functions in the equipment room are implemented in star cabling on a layer 2 switch.
IP/VLAN overview
Network designation | Network | Address range |
---|---|---|
Building automation and control | 192.168.11.0/24 | 192.168.11.2….192.168.11.254 |
Requires more than 200 IP addresses | ||
Building automation and control | 192.168.11.0/23 | Max. 510 usable IP addresses |
Planning and implementation, BACnet network
A BACnet internetwork is built using a BACnet network. All Desigo devices communicate on the same UDP port, e.g. 0xBAC0.
Local and global broadcasts are not critical for this amount of devices, rooms, and plants, i.e. BBMD configuration is not required.
Planning and implementation, HVAC and room automation
Plant scope:
- Desigo PXC4/7 to control primary plants.
Building scope:
- Desigo PXC5/7 for superposed functions, e.g. scheduler for occupancy and use times by floor and monitoring Desigo room automation stations.
- Desigo DXR2.E18/PXC3.E… for central functions over multiple floors.
- Desigo PXC5.E003 for HVAC central functions
Floor scope:
- Desigo DXR2.E18/PXC3.E… for central functions.
- Desigo PXC4/PXC5.E003 for HVAC central functions
- Desigo DXR2.E../PXC3.E... for room and room segments / HVAC, lighting, and blinds.
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 (PXC5.E003).
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 | SchedLg6 Scheduler, lighting system operation. First 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 |
|
AS500 Scheduler for shading, building occupancy | SchedSh0 Scheduler, shading, occupancy, ground floor | SchedSh1 Scheduler, shading, occupancy, 2nd floor | SchedSh2 Scheduler, shading, occupancy, 3rd floor | SchedSh3 Scheduler, shading, occupancy, 4th floor |
|
AS500 Scheduler for shading, system operation | SchedSh6 Scheduler, shading system operation. Ground floor | SchedSh7 Scheduler, shading system operation. 2nd floor | SchedSh8 Scheduler, shading system operation. 3rd floor | SchedSh9 Scheduler, shading system operation. 4th floor |
|
Central emergency shading (overall) |
|
|
|
| CenEmgShd |
Central protection function shading |
|
|
|
| CenPrtShd |
Central service function Blinds | CenSrvShd_EG | CenSrvShd_1OG | CenSrvShd_2OG | CenSrvShd_3OG |
|
Central facade shading west |
|
|
|
| CenFcdShd_W |
Central facade shading south |
|
|
|
| CenFcdShd_S |
Central facade shading east |
|
|
|
| CenFcdShd_E |
Hot water supply chain |
|
|
|
| SplyHw |
Supply chain chilled water |
|
|
|
| SplyChw |
Recommendation: Network components
- Siemens SCALANCE XB005 - as the edge switch for cabling PXC and Desigo room automation stations.
- Siemens SCALANCE XB005 - At the distribution level in the riser zones.
- Siemens SCALANCE XB205 - At the distribution level with port mirroring for diagnostics.
IT security and IT basic protection
The elements of infrastructure, IT systems, networks, and applications must be discussed under the aspects of security and appropriate measures need to be developed. Customer, domestic, or industry guidelines and directives must be observed under all circumstances.
For additional details, see Desigo Cybersecurity Guidelines Application Guide (A6V14142297) and Practical Guide on IP Networks in Building Automation and Control Systems (CM110668).
Summary
The following tables show how to depict all devices and network components in a small project.
Plant category | Number of IP devices |
---|---|
PXC primary plants | 5 |
PXC3/DXR2 individual room control & central functions | 121 |
PXC5.E003 system controller, building scope | 1 |
Reserves 5% | 6 |
Amount | 133 |
Network components | Type Siemens | Layer | Managed | No. |
---|---|---|---|---|
Edge switch per floor | XB005 | 2 | No | 9 |
Distribution switch in the equipment rooms | XB200 | 2 | Yes | 1 |
Description | 2nd floor DXR2 | 3rd floor DXR2 | 4th floor DXR2 | 5th floor DXR2 | Primary plant | System level |
---|---|---|---|---|---|---|
VLAN | VLAN 01 | VLAN 01 | VLAN 01 | VLAN 01 | VLAN 01 | VLAN 01 |
UDP port | BAC0 | BAC0 | BAC0 | BAC0 | BAC0 | BAC0 |
Subnet mask | 255.255.255.0 | 255.255.255.0 | 255.255.255.0 | 255.255.255.0 | 255.255.255.0 | 255.255.255.0 |
Default gateway | 192.168.11.254 | 192.168.11.254 | 192.168.11.254 | 192.168.11.254 | 192.168.11.254 | 192.168.11.254 |
Engineering notebook XWP/ABT |
|
|
|
|
| 192.168.11.251 |
Number of DXR2 | 30 | 30 | 30 | 30 |
|
|
Reserve IP addresses | 220 | 220 | 220 | 220 |
|
|
IP address range for DXR2 from… | 192.168.11.11 | 192.168.11.51 | 192.168.11.101 | 192.168.11.151 |
|
|
IP address range for DXR2 ...to | 192.168.11.50 | 192.168.11.100 | 192.168.11.150 | 192.168.11.200 |
|
|
Central functions floor (DXR2…) | 192.168.11.50 | 192.168.11.100 | 192.168.11.150 | 192.168.11.200 |
|
|
Central functions for the overall building (PXC3/DXR2) |
|
|
|
|
| 192.168.11.201 |
System controller monitoring floors (PXC5.E003) |
|
|
|
|
| 192.168.11.202 |
Number of PXC |
|
|
|
| 5 |
|
Reserve IP addresses |
|
|
|
| 249 |
|
IP address range PXC primary plants from… |
|
|
|
| 192.168.11.203 |
|
IP address range PXC primary plants ...to |
|
|
|
| 192.168.11.210 |
|
IP address range Mgmt'stations Desigo CC from… |
|
|
|
|
| 192.168.11.211 |
IP address range Mgmt'stations Desigo CC f...to |
|
|
|
|
| 192.168.11.215 |