NOTE:
Only complete this procedure if the configuration does not use a Siemens field panel. For example, if FLN devices are connected directly to MS/TP ports of the N4 / TNMcontroller.

It is recommended that you restart the station after adding a N4 / TNMcontroller.

If the N4 station is acting as both a supervisory controller and an air handling unit controller, see the topic Adding a LocalDeviceAhu object to the station in Advanced Topics.

When is a Station Local Device Needed?

When the N4 station is acting as both a supervisory controller and an air handling unit controller, a LocalDeviceAhu object should be added to the station. The LocalDeviceAhu object contains a preconfigured rollup graphic and algorithm.

For instructions, see the topic Configuring a Station Local Device in this section.

Supervisory Controller and AHU Controller Example Topology.

When is a LocalDeviceAhu Object Not Needed?

A LocalDeviceAhu virtual AHU controller object is not needed if the station is not responsible for AHU control. UEC AHU examples are shown in the following figure.

AHU Example Topologies.

Configuring a Station Local Device

The LocalDeviceAhu template is used to create virtual ALN devices representing controllers performing both supervisory and AHU control. The LocalDeviceAhu template includes the hs:equip, hs:ahu and sie:alnDevice tags.

  1. Connect to the station using Siemens Workbench.
  1. Open the Template sidebar
  1. Drag the LocalDeviceAhu template onto the Config/SiemensUi folder
  1. Follow the wizard prompts to select the site and area, just as you would for any other device.
  • The LocalDeviceAhu object displays in the Site, Devices, and AHU hierarchies, in place of a UEC or another device used for AHU control.

Using Station Local Devices

After a LocalDeviceAhu object is added, representing a virtual field panel, the process of integrating BACnet FLN devices using BACnet Device Manager is identical to the process used with a real field panel.Remember that, just like with real BACnet field panels and AHU controllers, LocalDeviceTc and/or LocalDeviceAhu virtual controllers must be added first, followed by FLN devices.