Siemens ST PCS 7 manual OS long-term archiving with Central Archive Server, Cas, Server CAS

© Siemens AG 2007

Operator system

OS archiving

OS long-term archiving with Central Archive Server

■Overview

OS clients

OS-LAN

OS server	Batch server	Central Archive
(redundant)	(redundant)	Server (CAS)

Plant bus

Automation

systems

The central archive server (CAS) can be used for long-term ar- chiving of

•OS archive data (process values and messages),

•OS reports and

•batch data of the SIMATIC PCS 7 process control system.

The process values and messages exported from the OS ar- chives, as well as the OS reports and batch data from SIMATIC BATCH are managed by the CAS in a central database. They can be visualized directly on the OS clients or with the Storage- Plus viewer of the CAS.

■Design

The SIMATIC PCS 7 OS Server (BCE version) with the Microsoft Windows Server 2003 operating system offered in Section "SI- MATIC PCS 7 Industrial Workstation" in the Chapter "System- neutral components" can be used as the basic hardware for the CAS. The OS Software server of the SIMATIC PCS 7 V7.0 pro- cess control system is preinstalled on this basic device in addi- tion to the operating system. The Central Archive Server Basic Package is required to configure the CAS. This can be extended to a maximum of 120000 archive variables using SIMATIC PCS 7

Archive/SIMATIC PCS 7 Archive PowerPack licenses. Detailed information on licensing of the CAS in combination with OS

short-term archiving can be found at page 5/19 under "Features 5 of archive variables and licensing of short-term and long-term archiving".

The CAS does not require a connection to the plant bus. It can be connected to the OS and batch servers of the SIMATIC PCS 7 plant via OS-LAN (terminal bus), e.g. via the integral network connection (Ethernet RJ45 port onboard) of the server.

Redundant design of central archive server

The CAS can also have a redundant design. This increases the availability of long-term data, and these can also be accessed by the OS clients or the OpenPCS 7 station. SIMATIC BATCH does not yet swap out the batch data to the two central archive servers. However, following automatic matching of the archives, the batch data are available on both central archive servers fol- lowing swapping out.

The following table shows the corresponding number of compo- nents required for single and redundant CAS configurations.

	Single central	Redundant
	archive server	central archive
	(CAS)	server (CAS)
SIMATIC PCS 7 Industrial Work-	1	2
station, server version
Incl. Ethernet network card and
BCE
Central archive server basic	1	2
package
SIMATIC PCS 7 Archives/SIMATIC	Licenses for	Licenses for
PCS 7 Archive PowerPacks for	one server	two servers
additional archive variables
WinCC option "Redundancy"	--	1
RS 232 connecting cable, 10 m	--	1

Instead of the serial RS 232 connection, it is also possible to use a separate Ethernet connection for optimization of internal com- munication between the redundant central archive servers, e.g. as an alternative for larger distances.

Siemens ST PCS 7 · November 2007

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