CI854 Profibus Communication interface card,how many cluster will support, ci840 how many IO card will support

CI854 Profibus Communication interface card,how many cluster will support, ci840 how many IO card will support

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vimal kacheri   

asked 7 months ago




A maximum of 124 slaves (CI840) can be connected to a CI854 since the node addresses 0 and 1 are reserved for CI854

Number of S800 I/O Stations

Maximum number of S800 I/O stations per bus:

Redundant CI840: 62 stations.

Single CI840: 99 stations

 Supported communication speeds: 93.75 kbit/s to 12 Mbit/s

Maximum number of S800 I/O stations per PROFIBUS segment:

Communication speed 12 Mbit: 20 stations.

Communication speed 1,5 Mbit: 32 stations.

Maximum number of S800 I/O modules in a station: 24 modules

Maximum number of S800 I/O modules per cluster: 12 modules

Switch over time at failure in a redundant CI840 configuration is typical <100 ms and maximum 150 ms.

The 12 modules per cluster can either be 12 single I/O modules or 6 pairs of redundant I/O modules. Redundant I/O modules can only be mounted on the base cluster. It is not allowed to mix single and redundant I/O modules within a cluster. It is not allowed to physically install more than 12 single MTUs and/or S800L modules in a single cluster. It is also not allowed to physically install more than 6 redundant MTUs in a redundant cluster.


For further reference S800 product guide 3BSE015969-600

Source: 3BSE015969-600


answered 7 months ago


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