Chapter 3. Configuration
GFK-2571N
May 2018
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3.11
After the Configuration is Stored to the RX3i CPU
The configuration is stored to the RX3i CPU using Machine Edition. For complete instructions, refer to the
PACSystems system documentation. If the configuration is stored to non-volatile memory or is battery-backed,
the CPU maintains configuration data over power cycles.
•
The RX3i CPU transfers configuration data to the PROFINET Controller.
•
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:
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.
•
When a VersaMax PNS receives a changed configuration, it temporarily sets all of 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.
3.11.1.1
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.
