GE PACSystems RX3i

Chapter 3. Configuration
64 PACSystems* RX3i & RSTi-EP PROFINET IO-Controller User Manual GFK-2571N
Caution
If the subnet mask is improperly set, devices may be unable to
communicate on the network and might disrupt network communications.
Contact your network administrator to assign values that work with an
existing network.
Subnet Mask: Mechanism that filters network communications so that they are routed only to subnets to
which they are addressed. The value defined here propagates to PROFINET Controllers and I/O devices
throughout the network.
PROFINET can only communicate to nodes in the local subnet. All nodes on the LAN must be in the same
subnet. The IP Range Lower/Upper Limits indicate the auto-assignment range. The range of the LAN is the
subnet mask range. A node can be assigned to any address in the subnet (which may be outside of the auto-
assignment range given in the dialog), but the addresses for all nodes must be in the subnet.
Gateway: The IP Address of the device that connects two (sub)networks that use different communications
protocols, enabling them to communicate with each other. The value defined here propagates to PROFINET
Controllers and I/O devices throughout the network.
Caution
If the gateway is improperly set, devices may be unable to communicate on
the network and might disrupt network communications. Contact your
network administrator to assign values that work with an existing network.
IO-Controllers: (Read-only.) The number of I/O Controllers configured to reside on the LAN.
IO-Devices: (Read-only.) The number of I/O devices configured to reside on the LAN.
Network Transit Time
4
(units of 1 ms): The maximum time (in ms) for a message to propagate between any
two nodes on the LAN. This time depends upon the network architecture and is typically negligible. It can be
significant in networks that have one or more slow segments.
For a media redundancy ring network, the recommended setting this this parameter to at least 5 ms
(parameter value = 5), which accommodates the maximum supported number of ring nodes.
4
Versions of this manual (prior to version N), incorrectly dimensioned this unit in terms of tenths of a millisecond. The units
are in ms.