GE PACSystems RX3i User Manual page 45

Chapter 4. Configuration
Network Identification
The Network Identification parameters of an RX3i CEP Carrier (IP Address, subnet mask, and gateway) should
be configured so that each device on the network has a unique IP Address. The IO Controller will configure the
network parameters for the RX3i CEP Carrier during the Connect sequence.
When the network parameters are set with the DCP tool, they will be maintained over a power cycle while no
IO-Controller is connected. If an IO-Controller is connected and the Network parameters configured for the
RX3i CEP Carrier do not match the currently retentive parameters stored on the device (those set using a DCP
Tool), then the
IO-Controller will assign the configured network parameters to the RX3i CEP Carrier for immediate use during
the connection process. This will overwrite the retentive values that were set by DCP with the factory default
values for IP, subnet, and gateway, (0.0.0.0/0.0.0.0/0.0.0.0). Note that if the RX3i CEP Carrier is now power-
cycled without an IO-Controller connected, the module will power up with the default network settings
because network settings configured by the IO-Controller are not retentive. In order to maintain settings over a
power-cycle without an IO-Controller connected, the network settings assigned by the IO-Controller must
match the network settings configured with the DCP Tool.
Data Exchange Rate
The rate of data exchange is usually configured on the RX3i CEP Carrier in configuration tools. The RX3i CEP
Carrier supports update rates from 1ms to 512ms. The correct
setting for each device can depend on the dynamics of the equipment being controlled, the network loading on
the PROFINET I/O LAN, and the loading of the IO-Controller. It is possible to have better performance at 2ms,
4ms or greater periods than at 1ms depending on the overall system requirements, design, and loading.
Media Redundancy Parameters
By default, the RX3i CEP Carrier is not set up for Media Redundancy. If the RX3i CEP Carrier will be a Media
Redundancy Client, select the carrier ports that will be used for Ring Port 1, Ring Port 2 and the MRP Domain.
The MRP Domain name is used to assign MRP Clients to the media redundancy manager (MRM) for the
network ring. The Domain Name is defined in the PROFINET I/O Controller's Media Redundancy tab.
Hot-Standby CPU Redundancy using PROFINET I/O Parameters
The Redundancy tab selects whether or not the CEP is redundantly controlled. Since the Rx3i CEP supports
PROFINET System Redundancy when it is configured in an HSB CPU Redundancy system, the Rx3i CEP
Programmer automatically selects redundant control by setting the Redundancy Mode parameter to HSB CPU
Redundancy.
When the Rx3i CEP is not configured in an HSB CPU Redundancy system, the Rx3i CEP automatically selects
simplex operation (non- redundant control) by setting the Redundancy Mode parameter to None.
If desired, the user may configure a redundancy-capable CEP within an HSB CPU Redundancy system for
simplex operation (non-redundant control) by changing the Redundancy Mode parameter on the Redundancy
tab form HSB CPU Redundancy to None
38 PACSystems* RX3i CEP PROFINET Scanner GFK-2883E