For each Metasys system network site, a single network engine or a Metasys server (ADS, ADX, or OAS) 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 SNEs as the Site Director.
By default, an SNE is designated as a Site Director when its firmware in loaded in the factory. You must demote any SNE that is not the designated Site Director on a site. See Designating an SNE as a child of a Site Director for more information.
If a Metasys server is on a site, an SNE cannot be the Site Director. You must demote the SNE to be a child of a Metasys server. See Designating an SNE 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.
|
Site Director |
Supervisory Rights |
|---|---|
|
SNE2200x |
May supervise up to three additional engines on the site: NCE25s, NAE35s, NAE45s, NAE55s, SNEs, or SNCs. |
|
SNE1100x |
May supervise up to two additional engines on the site: NCE25s, NAE35s, NAE45s, SNE1050, or SNE1100xs. |
|
SNE110Lx |
Cannot supervise any additional engines on the site. |
|
SNE1050x |
May supervise up to two additional NCE25s NAE35s, or SNE1050xs on the site. |