Emerson PACSystems RX3i User Manual page 91

RSTI-EP PROFINET I/O Controller User Manual
GFK-2571R
• After successfully processing and applying its configuration data, the PROFINET
Controller turns on its CONFIG LED.
• The PROFINET Controller then transfers the configuration for remote IO-Devices over
the PROFINET network.
PROFINET delivers IO-Device configurations when the IO-Controller establishes an
Application Relationship (AR) with the IO-Device. If all Application Relationships (AR)s are
lost, the IO-Device (such as a VersaMax PNS) does not change the configuration of any of its
I/O sub-modules. Each sub-module retains the most recent configuration received since it
was last powered up or restarted. If a sub-module has not been configured since power-up
or restart, it remains in its hardware default condition. When the AR(s) are re-established
and a configuration is sent to the IO-Device, and the configuration of a sub-module has
changed, the IO-Device applies the new configuration.
If the PROFINET Controller cannot connect to an IO-Device, the PROFINET Controller logs a
Loss of Device fault in its Local Log table and provides the corresponding information to the
RX3i CPU for its fault tables. The PROFINET Controller periodically attempts to establish
communications and configure the IO-Device. When one of these subsequent
connect/configuration attempts is successful, the PROFINET Controller logs an Addition of
Device fault for that IO Device in its Local Log table and provides the information to the RX3i
CPU for its fault tables.
Note:
• When a VersaMax PNS receives a changed configuration, it temporarily sets all its
outputs to their defaults. If the configuration has not changed, a VersaMax PNS does
not default outputs. Third-party IO-Devices may operate differently.
• If a PNS is powered up and its modules are at hardware defaults, when it receives a
configuration for the first time, any new defaults that are different from hardware
defaults are applied until the first output data arrives.
If a PNS is powered up after receiving a configuration and the connection is then lost,
configuration defaults are applied when the connection is lost. On a subsequent
connection, if the same configuration is sent, outputs remain at the configuration defaults
until the first output data arrives. If a different configuration is sent, output defaults
transition to the new defaults until the first output data arrives.
Clearing the RX3i CPU Configuration
If the programmer clears the configuration for an RX3i CPU containing a PROFINET
Controller, the PROFINET Controller clears its configuration (excluding non-volatile
parameters, which are retained), closes all opened PROFINET IO-Device connections, and
turns OFF its CONFIG LED.
The RX3i PNS, VersaMax PNS and all third-party IO-Devices react to the clearing of the
PROFINET Controller as a loss of connectivity, and take appropriate action, such as
defaulting outputs.
Configuration
It may take up to 5–10 seconds for the PROFINET Controller to establish a connection to
an IO Device, including one that previously existed, but was lost.
Section 3
May 2021
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