Emerson PACSystems RX3i DNP3 User Manual page 10

PACSystems™ RX3i DNP3 Outstation User Manual
GFK-3103B
Object
Outstation
PME
Slave
SOE
TCP/IP
Variance
Introduction
A generic term used for referring to a collection of data points, or a single data point, on a DNP
device. An object can have a specific action on an Outstation and all objects are defined in the
DNP3 Specification.
DNP3 Slave communicating with the DNP3 Master
PAC Machine Edition – used to configure, program and monitor RX3i Systems.
DNP3 Outstation communicating with the Master
Sequence of Events: a generic term used to describe a mechanism that can detect data
change, then time-stamping each change for the purpose of establishing the sequence in
which the changes were detected.
The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol
suite (IP), and is so common that the entire suite is often called TCP/IP. TCP provides reliable,
ordered and error-checked delivery of a stream of octets between programs running on
computers connected to a local area network, intranet or the public Internet. It resides at the
transport layer.
A specification sub-group of Group that typically refers to a format of the data, or a specific
sub-command to an action, as defined in the DNP3 Specification. Variance many times is a
micro sub-category of Object and is not unique when describing Objects and Groups.
Section 1
June 2020
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