Siemens Carbon Monoxide Alarm CS 275 Manual de usuario descargar pdf (Pagina 4)

Summary

Siemens PLT 130

1994

1/3

The bus system can be designed in redundant form if extremely

high demands are placed on the availability. This does not result

in additional configuring requirements.

Events are always recorded with the exact time since the indi-

vidual bus participants can synchronize their clocks via the bus

system.

The simple configuring is one of the most important characteris-

tics of the CS 275 bus system. Convenient system functions are

used to establish the connection, intervention by the operator is

not required. The parameters to be transmitted (analog/binary

values, messages etc.) are already declared when configuring

the automation systems and the operation and monitoring sys -

tems. The establishment of the connection for the operation and

monitoring systems is carried out automatically when starting

up, it is merely necessary to enter a coupling command for con-

nections between automation systems.

Optimum utilization of the high performance of the CS 275 bus

system is only guaranteed with a large number of participants if

certain rules are observed when configuring the bus and if it is

ensured that the cyclic bus loading does not exceed 70 % of the

bus capacity . Thus 30 % are available for acyclic data transfer

(e. g. messages).

In the case of a specific configuration, the cyclic bus loading is

independent of

the configuration of the transmitter blocks in the automation

systems,

the transmission mode selected and

the processing cycle of the transmitter blocks.

Information on the establishment of data transfer with the cou-

pling blocks for data exchange via the CS 275 bus system is

included in the publication ”Configuring guidelines” in the

Manual ”CS 275 bus system”. This publication describes the

determination of the cyclic bus loading using the bus loading

characteristics and lists the cyclic bus loading for a selected

configuration.

Created with "Chameleon CMYK PDF Creator" for Wolfgang Strozyk at Siemens AG

This catalog is out of date, see note on page 2

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Siemens Carbon Monoxide Alarm CS 275 Manual de usuario Pagina 4