Configuring An Rx3I Profinet Scanner - GE RX3i PROFINET User Manual

Chapter 4. Configuration

Configuring an RX3i PROFINET Scanner

4.2.2
The PROFINET I/O Scanner is automatically assigned 32 bits of Status data and 32 bits of Control data.
These should be mapped to the I/O Controller's memory. For definitions of these bits, refer to Section 5.2.1,
PROFINET Scanner Status and Control Data.
The PROFINET Controller (PNC) to which the PNS is connected determines the state of the inputs whenever
the PNS is unable to provide them. This could happen when the PNS is not powered on, not connected to
the network, or there is a network or configuration issue such that the PNC cannot communicate with the
PNS. PNCs available from GE's Automation and Controls support defaulting inputs to Force Off or Hold
Last State values until PROFINET communications are restored.
Configure the network parameters of a PNS (IP Address, subnet mask, and gateway) so that each device
on the PROFINET network has a unique IP Address. The PNC will configure the network parameters for the
PNS during the Connect sequence.
When the network parameters are set with the DCP tool, they will be maintained over a power-cycle while
no PNC is connected. If a PNC is connected and the network parameters configured for the PNS do not
match the currently retentive parameters stored on the device (those set using a DCP Tool), then the PNC
will assign the configured network parameters to the PNS for immediate use during the connection
process. This will have the effect of overwriting 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 PNS is subsequently
power-cycled without a PNC connected, the PNS will power up with the default network settings because
network settings configured by the PNC are not retentive. In order to maintain settings over a power-cycle
without a PNC connected, the network settings assigned by the PNC must match the network settings
configured with the DCP Tool.
The rate of data exchange on the PNS is usually configured in PME configuration tools. The PNS supports
update rates from 1 ms to 512 ms. 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 PNC.
Refer to the section on PNC Loading in the PACSystems RX3i PROFINET Controller User Manual, GFK-2571.
It is possible to have better performance at 2 ms, 4 ms or greater periods than at 1 ms depending on the
overall system requirements, design, and loading. The duration of data indicating very brief states or
conditions should be taken into consideration in choosing the correct setting.
Media Redundancy Parameters
4.2.2.1
For a full discussion of PROFINET Redundant Media and interactions with the controlling RX3i CPU, refer to
Chapter 6 of the PACSystems RX3i PROFINET Controller User Manual, GFK-2571.
By default, the PROFINET Scanner is not set up for Media Redundancy. If the PROFINET Scanner will be a
Media Redundancy Client (MRC), use Proficy Machine Edition to configure the related parameters, as
follows. For the PNS module itself, select the module 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 Media Redundancy tab of the
associated PROFINET Controller.
38 PACSystems* RX3i PROFINET IO-Scanner User Manual GFK-2737F