Siemens ST PCS 7 User Manual

Operator system

Introduction

5/2

Siemens ST PCS 7 · November 2007

■

Overview

User interface of the OS process control system with freely positionable

windows

The operator system of the SIMATIC PCS 7 process control sys-

tem permits user-friendly and secure execution of the process

by the operating personnel. The operator can observe the pro-

cess sequence by means of various views and intervene to con-

trol the system when necessary.
The operator system architecture is extremely variable and can

be flexibly adapted to different plant architectures and customer

requirements.
The basis is formed by perfectly coordinated operator stations

for single-user systems (OS single stations) and for multi-user

systems with client/server architecture.
The system software of the operator stations is available in differ-

ent levels based on the number of process objects (PO) used:
• 250, 1000, 2000, 3000 or 5000 POs per OS single station
• 250, 1000, 2000, 3000, 5000 or 8500 POs per OS server (with

client/server architecture)

The number of POs for an operator station can be increased up

to 5000 (OS single station) or 8500 (OS server) at any time by

means of PowerPacks to allow for higher requirements or system

expansions.

■

Benefits

Flexible, modular architecture with scalable hardware and

software components for single-user and multi-user systems

High-performance operated stations based on standard PC

technology with Microsoft Windows XP Professional /

Server 2003, can be used in office or industrial environments

Client/server multi-user systems with up to 12 OS servers/

pairs of servers, each for 8500 process objects (PO) and up

to 32 OS clients per server/pair of servers

High-performance archive system based on Microsoft SQL

server with cyclic archives and integral data backup, option-

ally with long-term archiving via StoragePlus/central archive

server (CAS)

OS health check for monitoring important server applications

Integration of modifications without interrupting runtime oper-

ations, and online testing through selective loading of redun-

dant servers

Optimized AS/OS communication:

data transmission only following change in data, independent

of AS reply cycle; suppression of nuisance alarms

User-friendly process control and high operational reliability,

also in conjunction with multi-screen technology

Extended status displays through combination of status and

analog values with alarm information

Alarm suppression during startup or on malfunction of a sen-

sor/actuator

Dynamic or manual hiding of visual and acoustic alarms that

are unimportant depending on the plant status, e.g. during

plant startup (however, all messages are recorded and ar-

chived); with manual hiding, the duration until display takes

place again can be set.

Alarm priorities as additional attribute for filtering important

messages

Central user management, access control, electronic signa-

ture

Sign-of-life monitoring for subordinate systems connected to

the plant bus

System-wide time synchronization based on UTC (Universal

Time Coordinated)