CSE Kingfisher PLUS+, Hardware Reference Manual

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Superseded Hardware Manual 7.12 Page 89
Ch a p te r 2 Glo s s a ry
AI, AO, DI, DO Analog Input, Analog Output, Digital Input and Digital Output respectively
Byte A group of 8 bits. Each bit can be a 0 (off) or a 1 (on) allowing up to 256
combinations.
Comms Communications
Current Sinking Current is supplied into the RTU’s IO terminal.
IO
Input, Output
IP
Internet Protocol. Used for Ethernet communications.
Port A physical connection or socket on an RTU used for communications
Processor Module Processor module containing a CPU (central processing unit)
Protocol Refers to the format of messages that may be passed to, from and through an
RTU in communication with local and remote devices. Communications may
use one or more RTU ports. Examples of protocols used within telemetry
include Kingfisher, Modbus and DNP3.
RTU Acronym for Remote Terminal Unit. Describes a group of processor,
communication and IO modules that comprise a device for monitoring and
control of equipment in remote locations.
TCP/IP Transfer Control Protocol / Internet Protocol. Commonly used for Ethernet
communications.
UDP
Universal Datagram Protocol.