Site Director - Metasys - LIT-1201519 - MS-NAE35xx-2 - MS-NAE45xx-2 - MS-NAE5510-2U - MS-NAE5510-3U - MS-NAE551S-2 - MS-NAE55xx-3 - MS-NCE25xx-0 - MS-NXE85SW-x - Supervisory Device - NAE35 Network Automation Engine - NAE45 Network Automation Engine - NAE55 Network Automation Engine - NAE85 Network Automation Engine - NCE25 Network Control Engine - 11.0

NAE Commissioning Guide
Product
Network Engines > Network Automation Engines > NAE45 Network Automation Engine
Network Engines > Network Control Engines > NCE25 Network Control Engine
Network Engines > Network Automation Engines > NAE35 Network Automation Engine
Network Engines > Network Automation Engines > NAE55 Network Automation Engine
Network Engines > Network Automation Engines > NAE85 Network Automation Engine
Document type
Commissioning Guide
Document number
LIT-1201519
Version
11.0
Revision date
2022-02-09

For each Metasys system network site, a single network engine or a Metasys server (ADS, ADX, OAS, or ODS) is designated as the Site Director. The Site Director provides a single point of access to the site and all of the web-enabled devices on the site. The Site Director supports functions such as user login, user administration, user views, time synchronization, and data traffic management.

On larger building control networks with one or more Metasys servers, a Metasys server is designated as the Site Director. On small network sites without a Metasys server, you must designate one of the NAEs as the Site Director.

By default, an NAE is designated as a Site Director when its firmware in loaded in the factory. You must demote any NAE that is not the designated Site Director on a site. See Designating an NAE as a child of a Site Director for more information.

If a Metasys server is on a site, an NAE cannot be the Site Director. You must demote the NAE to be a child of a Metasys server. See Designating an NAE as a child of a Site Director for more information.

Note: The NAE45-Lite model cannot be a Site Director to other engines. The NAE45-Lite can only be a child device of an ADS-Lite-A. You must demote the NAE45-Lite to be a child of an ADS-Lite. See Designating an NAE as a child of a Site Director for more information.

The following table lists the supervisory rights of each network engine model when it serves as a Site Director.

Table 1. Supervisory Rights

Site Director

Supervisory Rights

NAE85

May supervise up to four additional engines on the site: NCE25s, NAE35s, NAE45s, NAE55s, NAE85s, SNEs, or SNCs

NAE55

May supervise up to three additional engines on the site: NCE25s, NAE35s, NAE45s, NAE55s, SNEs, or SNCs.

NAE45

May supervise up to two additional engines on the site: NCE25s, NAE35s, or NAE45s.

NAE45-LiteSNE110Lx

Cannot supervise any additional engines on the site.

NAE35

May supervise up to two additional NCE25s or NAE35s. on the site.

NCE25

None, an NCE25 can only be a Site Director to itself.
Note: If you attempt to add an NAE to a site and the new NAE exceeds the supervisory device limit for the Site Director, the Site Director does not accept the additional device. The Site Director records an error message in the Site Director Audit Viewer each time you attempt to add a new device that exceeds the device limit.