Allen-Bradley ControlNet PLC-5 User Manual page 12

P-2 Preface
Terminology
Actual Packet Interval (API)
ControlNet network
ControlNet PLC-5 processors
connection
DData Input File (DIF)
Data Output File (DOF)
discrete I/O data transfer
frame
drop cable
I/O map table
(scanlist configuration)
keeper
link
map table entry
(scanlist entry)
network access port (NAP)
network address
network update interval (NUI)
1785-UM022B-EN-P - February 2002
Monitoring and troubleshooting your ControlNet system
Using the status indicators
Processor specifications
Processor status file
ControlNet instructions
ControlNet I/O map table entry status words and error messages
Fault codes
ControlNet diagnostics file layout
Term
the actual time it takes for the ControlNet network to update the requested data. The largest
binary multiple of the Network Update Time (NUT), smaller or equal to the Requested Packet
Interval (RPI). For more information, see page 2-2.
communication architecture that allows the exchange of data between Allen-Bradley
Company, Inc. products and certified third-party products
references PLC-5/20C, -5/40C, -5/46C and -5/80C programmable controllers phase 1.5
opened communication path between two nodes on a ControlNet network
integer file used by ControlNet PLC-5 processors to store discrete and non-discrete input
data. The DIF cannot be forced
integer file used by ControlNet PLC-5 processors to store discrete and non-discrete output
data. The DOF cannot be forced
type of data transfer in which single units of I/O have discrete relationships with values in
the processor's data table; uses the processor's input- and output-image tables (I and O
files); configured on a per-node basis in the ControlNet I/O map table
single data transfer on a ControlNet link
cable that connects a ControlNet node to the trunk cable; integral part of 1786 taps
table that you configure using the programming software to map data from an I/O chassis
and other devices on the ControlNet network to particular data table file addresses
device that stores and distributes ControlNet configuration data to all nodes on the network.
A minimum of one keeper device is required on each ControlNet network.
collection of ControlNet nodes with unique network addresses in the range of 01-99; segments
connected by repeaters make up a link; links connected by bridges make up a network
one entry in the I/O map table that you configure using the programming software to map
data from one I/O chassis or other device on ControlNet to particular data table file
addresses
port that provides a temporary ControlNet-network connection through an RJ-45 connector
node's address on the ControlNet network
single occurrence of the ControlNet Network Update Time (NUT)
If you want to read about:
Description
Go to:
Chapter 5
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F