Rockwell Automation 1732E-IB16M12SOEDR EtherNet/IP ArmorBlock supporting Sequence of Events - Manual (Page 115)

Publication 1732E-UM002A-EN-P - March 2010
Glossary 107
protocol
The packaging of information that is transmitted across a network.
read
To acquire data from a storage place. For example, the processor READs
information from the input data file to solve the ladder program.
relay
An electrically operated device that mechanically switches electrical circuits.
relay logic
A representation of the program or other logic in a form normally used for
relays.
RPI
Requested Packet Interval. The update rate specified for a particular piece of
data on the network. This value specifies how often to produce the data for
that device.
restore
To download (transfer) a program from a personal computer to a controller.
reserved bit
A status file location that the user should not read or write to.
RoHS
Restriction of Hazardous Substances in Electrical and Electronic Equipment.
European Community (EC) Directive on Restriction of Hazardous Substances
in Electrical and Electronic Equipment. Complementary to the WEEE
Directive, this seeks to reduce environmental impact by restricting the use of
hazardous substances (lead, mercury, cadmium, hexavalent chromium and
brominated flame retardants PBB and PBDE).
retentive data
Information associated with data files (timers, counters, inputs, and outputs) in
a program that is preserved through power cycles.