Large automation controls project with:

  • Desigo CC Management Platform
  • Primary plants
  • KNX PL-Link field devices
  • Integration
  • Optional: room controllers
  • Total number of data points (physical and integration): 500 to 10,000
  • Total number of devices (PXC, DRA, and third-party): Up to 250
  • Optional: Cloud connectivity to Building X

Examples: Large schools, large office buildings, large retail buildings (shopping malls)

 

Patch cables

Installation cables

 

Installation of local and distributed devices

  • Cabling: Patch cables (CAT5/6/7 up to 100 meters) between PXC devices. Each PXC4/5/7 device has a switch with two ports for easy connection. Protect cabling against unauthorized access.
  • Installation cables (mechanically protected twisted pair (TP) cables with solid copper wiring).
    • BACnet IP network: Maximal length 90 m between patch panels.
    • Modbus RTU: Maximal length 800 m between PXC and last Modbus device.
  • Installation cables (fiber optics).
    • BACnet IP network: Maximal length up to 2000 m between patch panels. Refer to the specification of the manufacturer
  • Other installation variants and additional technical information:
    • See Application guide for IP networks in building automation and control, A6V10630964.

Network setup (own IP network)

Set up of the network information for each device (via ABT Site Tool):

  • Each PXC device needs a unique address
  • IP port: Default value BAC0

Network setup (using existing IP network with DHCP server)

  • Enable “DHCP” (an individual address for each PXC device is not necessary since the DHCP server assigns the addresses).
  • IP port: Default value BAC0

Modbus TCP / RTU devices

The Modbus data points (register) for the different devices are mapped to BACnet input/output objects in the PXC4, PXC5, and PXC7 and time for the values are updated as per the selected polling time. These objects are handled in the system as BACnet input/output objects similar to objects from other subsystems (e.g. TXM modules).

Desigo Control Point (touch panels)

For details, see Desigo Control Point Basic documentation, A6V11170804.

BACnet networks with MS/TP trunks

See "BACnet networks with MS/TP trunks" and Ethernet, TCP/IP, MS/TP and BACnet (CM110666)