Siemens EF 837 Series Especificaciones Pagina 38

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S800 I/O Configuration - Basic Rules and Examples Section 3 Configuration
38 3BSE056248
Direct redundant I/O to redundant AC 800M Controllers
In total max 42 pairs of modules but limited by:
TB840A Power supply capability.
Required scan cycle time.
Required CPU load.
Supported redundant modules:
DI840, DO840, AI843, AO845, DP840, AI845. AI880A, DI880, DI880 are supported if
PM865. The optical ModuleBus can be configured for long distances and in star
configurations using TB825 see Long distance distribution in star as Direct I/O to AC 800M
on page 42. It is possible to mix clusters with and without redundant I/O, but not on the same
cluster. See non-redundant I/O for information.
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