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VersaMax PROFINET Scanner Manual
– December 2013
GFK-2721A
4
PROFINET Module Loss, Add & Mismatch Faults
The VersaMax PROFINET Scanner uses standard PROFINET Pull/Plug alarms to indicate
differences between the expected, configured modules and the actual modules present in the
remote node.
The PROFINET Scanner only sends Plug/Pull PROFINET alarms if a module is added or lost
while an Application Relationship (AR) is established that includes it. During that period, if the
PROFINET Scanner detects differences between the equipment that is present and what is
configured in the Application Relationship (AR), it communicates loss and mismatch conditions.
If a module is configured, but is not present or operating correctly, the PROFINET Scanner
indicates the module as removed via a Pull Alarm. When used with a PACSystems RX3i
PROFINET Controller system, all point faults for a pulled module are reported as FAULTED.
If a mismatched VersaMax module is hot-inserted while an Application Relationship that
includes the slot/sub-slot is active, the VersaMax PROFINET Scanner reports the mismatch
using a Plug Wrong Submodule alarm. On future connections, the module will be reported
as incorrect during the connection sequence.
If a VersaMax module is installed but not included in the configuration of the Application
Relationship (AR), no alarm is generated. The module is ignored by the PROFINET Scanner
and remains at its module defaults.
If a module is returned to service and matches the configuration in the PROFINET Scanner,
the scanner sends a Plug Alarm.
If a module is correct, but there is an inconsistent hardware jumper (for example, an analog
module is configured for 4
–20mA, but the jumper is for 0–10v), the PROFINET Scanner
reports a configuration mismatch specifying the submodule in error. The I/O module must be
powered down or removed, the jumper setting correct, and the I/O module restored or the
configuration must be changed to reflect the jumper setting.
Note:
During hot insertion or removal of IO modules, a transient Loss of Power fault on the
module may occur. This is allowable behavior due to variations in user operation.
