The offline AS-i bus mode is an advanced operating mode which can be used in debugging or maintenance.
NOTE: The user must be thoroughly familiar with AS-i communication.
When offline mode is engaged, the module first resets all the present slaves to zero and stops exchanges on the bus.
When in offline mode, the picture of the I/O’s in the module is frozen in the state at the time of entering this mode.
When exiting from the module, if the list of present slaves (LPS) is equal to the list of detected slaves (LDS), the system restarts. Otherwise a fault is generated and the diagnostics or configuration mode must be referred to.
The offline operating mode is accessible either:
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from the Control Expert application software by acting on bits 0 and 1 of the %MWr.m.0.24 word,
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or automatically on detection of an AS-i supply fault.
Reminder: Bit 7 of word %MWr.m.0.3 set on 1 indicates that the AS-i bus is in offline mode.
