Siemens ST PCS 7 用户手册

OS software

Siemens ST PCS 7 · November 2007

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With SIMATIC Logon, the operator system has central user ad-

ministration with access control that complies with the validation 

requirements of 21 CFR Part 11. The administrator can divide 

the users into groups and assign differently defined access 

rights (roles) to these groups. The operator obtains the specific 

rights when logging on within the scope of the access control. 

Apart from the keyboard, an optional chipcard reader, for exam-

ple, can be used as the logon device. In addition, SIMATIC 

Logon offers the "electronic signature" function.
SIMATIC Logon is already integrated in SIMATIC PCS 7 and 

need not be ordered separately. For further information on 

SIMATIC Logon as well as ordering data for an optional chipcard 

reader, see page 2/5.

With the "Sign-of-life monitoring" function, the operator system is 

able to monitor the correct operation of all subordinate systems 

connected to the plant bus. A graphical plant configuration dis-

play shows the status of each monitored component. The 

SIMATIC PCS 7 asset management offers enhanced functional-

ity in this context (see Chapter "Asset Management").

SICLOCK TM central plant clock

Together with a SICLOCK time generator (see Catalog "Add Ons 

for SIMATIC PCS 7"), the operator system of the SIMATIC PCS 7 

process control system can implement the system-wide syn-

chronization on the basis of UTC (Universal Time Coordinated). 

This feature is especially beneficial for widely distributed plants 

present in different time zones, e.g. pipelines.

Visual Basic and C are the scripting languages available for cus-

tom programming of OS applications.

© Siemens AG 2007