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The parameters for a module can mainly be divided into configuration parameters
and non-volatile parameters.
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At start-up, the configuration parameters are loaded by the FCI in the Not
Configured state. When valid configuration parameters are written to the module,
it will change from the Not Configured state to the Ready state. After entering the
Ready state the module may be set to Operational.
A parameter block that is not loaded is undefined (there is no such thing as default
parameters). The only property that may be seen as a default, is that a channel that is
not configured (has not gotten its parameters) is inactive. This makes it possible to
configure only channels that should be used without bothering about the others.
The parameters do not need to be remembered on the modules after a reset of the
module.
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If parameters that are in some way invalid are sent to a module, this is indicated
with a warning in the module status and by a diagnostic message. If channel
parameters are invalid an error on the channel is indicated.
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Each channel may, apart from the configuration parameters, also have non-volatile
parameters that are written during production and are not changed by a running
system.
3BSE 020 925R101
43
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