景德镇西门子模块代理商

景德镇西门子模块代理商

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概述Single station configuration

The single station configuration represents the smallest possible system configuration in which all software modules (Administration, Engineering, Monitoring & Control, PDM) can run in parallel on one computer. It includes a possibility of operation via a local web client. Access via other web clients is possible in principle in this configuration as well.

G_PCS7_XX_00958

Single station

Redundant system configuration

A single station configuration can also be set up with a redundant structure to increase availability. To avoid having to change the computer for Monitoring & Control during redundancy switchover, however, we recommend using a remote web clients instead of a local browser.

G_PCS7_XX_00960

Redundant system configuration

Distributed system configuration

For a larger quantity structure, a distributed system configuration with assignment of servers by area for Monitoring & Control is recommended. Depending on the importance of the plant area, the servers can be single or redundant. By means of dedicated hardware for the engineering server and the Process Historian, the different performance requirements of these applications can be optimally served.

G_PCS7_XX_00959

Distributed system configuration

Virtualized system configurations

All above mentioned system configurations can also be used virtualized in the context of SiVaaS ("Siemens Virtualization as a Service"). The web interface remains unchanged. Communication on the plant bus with the automation systems can also take place in a virtual environment, in principle. Because the virtualization environment can have repercussions on the plant operation due to configuration errors or incompatibilities, support can only be guaranteed with the use of a pre-tested virtualization configuration (SIVaaS).

Quantity structures

For SIMATIC PCS neo V4.0, the following quantity structure limits currently apply – provided that the recommendations for the system hardware are adhered to:

Parameters

System limit

Number of M&C servers with single design	8
Number of M&C servers with redundant design	8
AS connected to an M&C server	16 (redundant AS count double)
M&C clients simultaneously active on an M&C server	16 floating M&C clients for single station configuration: 4 floating M&C clients
Simultaneously active clients active on the server	10 floating ES clients
Number of monitors per client	4
Number of trends per trend window	16
Total number of process objects* in the project	64000
Number of process objects* per M&C server	8 000 (single station configuration: 750)
Number of process objects* per AS	2 000
Number of archive tags in the Process Historian	160000

*Process object = message-type block, SFC instance or connectivity process object for monitoring and control

Dynamic system limits

For SIMATIC PCS neo V4.0, the following dynamic system limits currently apply – provided that the recommendations for the system hardware are adhered to:

Parameters

System limit

Number of process value changes per second on an M&C server	8 000
Number of archive value changes per second (PH)	64000
Continuous alarm load (alarms per second on an M&C server)	10
Alarm peak load per M&C server	8000 alarms in 10 seconds, 60 seconds processing time
Typical display refresh time for display with 100 PO symbols	< 2 sec.