Rockwell Automation 9220-WINTA ControlNet Traffic Analyzer Reference Manual - Manual (Page 18)

Publication 9220-052C-EN-P - August 2002
1-8 Introduction
Terminology Use the following table to become familiar with some terms specific to
the Traffic Analyzer tool.
IMPORTANT
You may need to disable Power Management if data captures
are missing data.
IMPORTANT
The ControlNet Traffic Analyzer and RSLinx cannot run
simultaneously via the same network interface card.
Term Refers to
CNA10 the ControlNet ASIC containing the Media Access Control interface
circuitry used to send and receive data on a ControlNet network.
Connection ID (CID) an identifier assigned to a transmission that is associated with a
particular connection between producers and consumers that identifies
a specific piece of application information.
Filter a selection used to let frames that meet a specified condition to pass
from the network to the buffer, or from the buffer to the display. For
example, you may set up an input filter that will only allow frames with
a source MAC ID of 10 to pass from the network to the collection buffer.
Fixed Tag a two byte tag that identifies a specific service to be performed by the
node identified in the second byte of the fixed tag. The second byte of
the fixed tag contains the MAC ID of the destination node.
Generic Tag a three byte tag that identifies a specific piece of application
information (same as Connection ID).
LPacket link packet - data packaged and labeled by a node in preparation for
transmission. LPackets contain a header and data.
MAC Frame a collection of MAC symbols transmitted on the medium that contains a
preamble, start delimiter, source MAC ID, LPackets, CRC, and end
delimiter. After the ASIC processing, a MAC frame contains time,
status, type, source MAC ID and LPackets.
MAC Symbol symbols that represent the data bits to be encoded and transmitted by
the Physical Layer.
Trigger a collection that causes data collection to start or stop. You specify the
condition the same way that a filter is specified.
Trigger Point a point within the collection buffer where a trigger occurs. If the trigger
point is at the start of the buffer, data collection will begin when a
trigger condition is detected. If the trigger point is at the end of the
buffer, data collection will stop when a trigger condition is detected.
Unconnected
Message Manager
(UCMM) the component within a node that transmits and receives unconnected
explicit messages and sends them directly to the Message Router
object.