Mid-sized automation controls project with:

  • Desigo Control Point embedded building operations with touch panel operation
  • Primary plants
  • KNX PL-Link field devices
  • Integration
  • Optional: A few room controllers
  • Total number of data points (physical and integration): 200 to 1000
  • Total number of devices (PXC, DRA, and third-party): 5 to 50
  • Optional: Cloud connectivity to Building X for remote access and data points time series

Examples: Small to mid-sized schools, office buildings, retail buildings, etc.

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 (shielded 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 of 2000 m between patch panels. Refer to the manufacturer’s specification.
  • 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 (embedded building operations and touch panels)

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