Bradley Smoker 1734-AENT Manual De Usuario
Publication 1734-UM011C-EN-P - January 2006
About the Adapter 1-3
• A correct POINT I/O system does not have any empty terminal
bases.
• After you cycle power, the adapter will not run any I/O until the
number of modules comprising the chassis equals
the stored
chassis size.
– Because the adapter cannot detect empty terminal bases, it
cannot assume any safe operation until there is a match
between the number of modules indicating their presence in
the chassis and what the adapter has saved in non-volatile
memory.
between the number of modules indicating their presence in
the chassis and what the adapter has saved in non-volatile
memory.
– Actual module identification (such as, electronic keying) is
done when connection establishment requests are received
from the controller or controllers.
from the controller or controllers.
• A module removed under power does not disrupt operation of
the other I/O modules.
– When you remove a module, the adapter determines what
changed.
– Whenever you remove a module with an active connection
from the POINT I/O system, the adapter indicates this by
flashing the POINTBus Status LED red and reports a minor
recoverable fault.
flashing the POINTBus Status LED red and reports a minor
recoverable fault.
• If more than one contiguous module is removed under power,
connections to all modules in the contiguous missing module set
are disallowed until all modules are replaced. Because the
adapter cannot detect an empty base, it does not know the
physical positioning of the modules until all the missing
modules are replaced.
are disallowed until all modules are replaced. Because the
adapter cannot detect an empty base, it does not know the
physical positioning of the modules until all the missing
modules are replaced.
• If a module separating two sets of contiguous missing modules
is removed, the two sets merge into a single set. All the modules
must be replaced before connections are permitted to any
module in the set.
must be replaced before connections are permitted to any
module in the set.
• If modules of different types are removed and returned to the
wrong locations, attempts to connect to these modules will fail
during verification of the electronic ID (providing that keying
has not been disabled).
during verification of the electronic ID (providing that keying
has not been disabled).
• If modules of the same type are removed and returned to the
wrong locations, they accept connections from the controller or
controllers and reconfigure with the correct data once they pass
their electronic keying check.
controllers and reconfigure with the correct data once they pass
their electronic keying check.
• These removal and return situations exist whether the system is
under power or not. If the system is under power, the situation
arises immediately. If the system is not under power, the
situation arises in the next power cycle.
arises immediately. If the system is not under power, the
situation arises in the next power cycle.