SIMATIC PCS 7 Process Control System - Siemens

SIMATIC PCS 7 supports multi-user systems with up to
12 OS servers or 12 redundant OS pairs of servers. In multiclient
mode, OS clients can access data from one or more of the
12 OS servers/pairs of servers in parallel (up to 32 OS clients simultaneously
on all).
The OS servers are designed in addition with client functions
which permit them to access the data (archives, messages,
tags, variables) from the other OS servers of the multi-user system.
This means that process graphics on one OS server can
also be linked with variables on other OS servers (area-independent
displays).
Like the OS single stations, the OS servers can be connected to
the Industrial Ethernet plant bus using a CP 1613 communications
processor or a standard FastEthernet card with Basic Comunication
Ethernet (BCE). A 10/100/1000 Mbit/s Ethernet RJ45
port is already onboard and can be used for connecting to an
OS LAN (terminal bus).
The CP 1613 communication integrated in the IE version of the
ES/OS single station and the OS server is a combination of
CP 1613 communications processor and S7-1613 communications
software. When using fault-tolerant automation systems,
the SIMATIC PCS 7 Workstation requires the S7-REDCONNECT
software instead of the S7-1613 communications software. The
S7-REDCONNECT Upgrade is suitable for upgrading the communications
software (for ordering data, see page 9/28).
© Siemens AG 2007
Operator system
OS hardware
Siemens ST PCS 7 · November 2007
Introduction
OS archiving
The operator system already includes a high-performance archiving
system based on Microsoft SQL Server with cyclic archives
for short-term saving of process values and messages/
events (alarms). This short-term archive can be combined with
a long-term archive on the basis of StoragePlus or the central archive
server (CAS).
The StoragePlus provided for the bottom performance range is
able to archive approx. 1600 process values/s from a total of
4 single stations/servers/pairs of servers. The powerful CAS satisfies
much higher requirements. It can be configured as a single
server or as a redundant pair of servers, and can archive approx.
10000 values/s from up to 11 servers/pairs of servers. The
data managed in StoragePlus and in the CAS can be saved on
all storage media supported by the operating system. This requires
additional hardware and software, e.g. a DVD writer with
suitable burning software.
The StoragePlus computer and the CAS are stations on the
OS LAN (terminal bus), and are not connected to the plant bus.
When using a SIMATIC PCS 7 Industrial Workstation as the hardware
platform, the 10/100/1000 Mbit/s Ethernet RJ45 port already
onboard can be used for connecting to the OS LAN.
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