Rockwell Automation MD65 EtherNet/IP Communication Module - Manual (Page 171)

Glossary Glossary-5
RSLogix - A tool for configuring and monitoring controllers to
communicate with connected devices. It is a 32-bit application that
runs on various Windows operating systems. Information about
RSLogix software can be found a:
http:///www.software.rockwell.com/rslogix.
RSNetWorx for EtherNet/IP - RSNetWorx for EtherNet/IP software
is a tool for configuring and monitoring EtherNet/IP networks and
connected devices. It is a 32-bit Windows application that runs on
Windows 95, Windows 98, and Windows NT. Information about
RSNetWorx for EtherNet/IP software can be found at http:/
www.software.rockwell.com/rsnetworx.
scanner - A separate module (of a multi-module controller) or a
built-in component (of a single-module controller) that provides
communication with modules connected to a network.
See also
controller.
status indicators - LEDs that are used to report the status of the
module, network, and drive. They are on the module and can be
viewed on the front cover of the drive when the drive is powered.
subnet masks - An extension to the IP addressing scheme that lets
you use a single network ID for multiple physical networks. A bit
mask identifies the part of the address that specifies the network
and the part of the address that specifies the unique node on the
network. A “1” in the subnet mask indicates the bit is used to specify
the network. A “0” in the subnet mask indicates that the bit is used
to specify the node.
For example, a subnet mask on a Class C address may appear as
follows: 11111111 11111111 11111111 11000000
(255.255.255.192). This mask indicates that 26 bits are used to
identify the network and 6 bits are used to identify devices on each
network. Instead of a single physical Class C network with 254
devices, this subnet mask divides it into four networks with up to 62
devices each.
switches- Switches are network devices that provide virtual
connections that help to control collisions and reduce traffic on the
network. They are able to reduce network congestion by
transmitting packets to an individual port only if they are destined for
the connected device. In a control application, in which real time
data access is critical, network switches may be required in place of
hubs.
TCP (Transmission Control Protocol) - EtherNet/IP uses this
protocol to transfer Explicit Messaging packets using IP. TCP
guarantees delivery of data through the use of retries.