
S800 I/O Configuration - Basic Rules and Examples Section 3 Configuration
40 3BSE056248
High Integrity I/O to redundant High Integrity Controllers
In total max 84 modules but limited by:
• TB840A Power supply capability.
• Required scan cycle time.
• Required CPU load.
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.
NOTE! In a configuration with redundant CPUs, COM3 and the electrical ModuleBus
cannot be used.
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