PACSystems VersaMax Genius Network Interface User Manual Section 4
GFK-1535D Jan 2023
Configuration 81
4.4.7 How Autoconfiguration Handles Equipment
Changes
At power-up, previously-autoconfigured modules are not removed from
the NIU’s configuration unless no modules are connected to the NIU.
Module Present But Non-Working During Autoconfiguration: If a
module is physically present but not working during autoconfiguration,
the module is not configured.
Empty Slot During Autoconfiguration: Autoconfiguration stops at the
first empty slot. Modules located after the empty slot are not
autoconfigured.
Previously Configured Modules Not Present During
Autoconfiguration: Previously- configured modules are not removed
from the configuration during autoconfiguration unless no modules are
attached to the NIU. For example, if modules are configured in slots 1, 2,
and 3 then power is removed and the module in slot 1 is removed, when
power has reapplied the modules in slots 2 and 3 operate normally. The
original module in slot 1 is not removed from the configuration. The NIU
generates a loss of module fault for slot 1.
Different Module Present During Autoconfiguration: If a slot was
previously- configured for one module type but has a different module
installed during autoconfiguration, the NIU generates a configuration
mismatch fault. The slot remains configured for the original module type.
Unconfigured Module Installed After Autoconfiguration: If a module
that was not previously configured is installed-after powerup, the NIU
generates an extra module diagnostic and the module is not added to
the configuration.
Previously-configured Module Installed After Autoconfiguration: If a
previously autoconfigured module that was missing at powerup is
installed after powerup, the NIU generates an addition of module fault
and the module is added back into the I/O scan.
All Modules Removed After Autoconfiguration: If no modules are
attached to the NIU at powerup, the NIU clears its configuration and
enables autoconfiguration for the next power-up. Use this method when
modifying the set of modules installed in the I/O station.
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