Kingfisher Plus+ Hardware Manual
17.
GLOSSARY
Terms and Abbreviations
AI, AO, DI, DO
Analogue Input, Analogue 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.
EMI
Electro-magnetic interference
Functional
Earthing
Earthing of a point in a system, which is necessary for a purpose other
than safety.
IO
Input / Output
LED
Light-emitting diode
N-FET
N-channel Field Effect Transistor
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
Remote Terminal Unit. Describes a group of processor, communications
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.
Hardware Manual Version 7.16
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