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.
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.
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.
- Connect to the station using Siemens Workbench.
- Open the Template sidebar
- Drag the LocalDeviceAhu template onto the Config/SiemensUi folder
- 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.