Emerson OpenComms-485 Especificações descarregar pdf (Página 22)

Application and Configuration

3.5 Redundant SiteScan Web Servers

3.5.1 Target Application

In a typical application, a customer wants to monitor two facilities using two servers that manage

both locations, providing server redundancy. If a server goes off-line, the other still collects alarms

from both locations. The main features are:

• Data centers are in two separate buildings.

• Customer wants to have both sites managed by redundant servers.

• If one server goes down, the customer must have access to both sites.

• Each location manages both sites.

3.5.2 Description

Install two copies of the SiteScan Web server software, one in each location. Only one set of custom-

ized data files is created and is then loaded at both sites. Set up the servers to manage each site.

Both SiteGate-E modules will send alarm information to both servers. The customer will be able to

navigate and monitor both locations’ event alarms. Since the gateway modules can send trend infor-

mation to only one server, the system has been configured for each gateway to send trend data to its

local server.

3.5.3 Bill of Materials

Figure 5 Redundant SiteScan Web servers

Table 6 Bill of materials: Redundant SiteScan Web servers

Qty. Mktg. P/N Description

2 SSWEB SiteScan Web Software

2 SITEGATE-E 32-bit Ethernet-ready gateway module

2 SITELINK-12 SiteScan interface module to 12 Liebert units

2 ARC156-KIT PROT485, DIAG485 and terminating resistors with enclosure

Note: The bill of materials does not include LGS startup part numbers. Most LGS startup part numbers

are added automatically when ordering.

10.1.1.1

10.1.1.2 11.1.1.3

11.1.1.4

City Location A

Network - Ethernet - Fiber

City Location B

Network - Ethernet - Fiber

Legend

Alarm events

Trend data

Notifications

(E-mail, page, etc.)

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Emerson OpenComms-485 Especificações Página 22