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e-PAQ-9150
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Machine Language
Measured Value
Measurement Point
Memory
MSB
Non-Volatile
Offline
Offset
Online
PDM
PDM Point
Point Address
Polling
Queue
RAM
Raw Value
Read
Real-Time
Reset
RS-232C
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Section 3 - Glossary
The binary numbers that are interpreted as instructions by the computer.
The real-world magnitude, after scaling, obtained from an analog point.
A supervisory remote point associated with either analog or digital data.
The physical locations where data (see RAM) and instructions (see Flash)
are stored in the computer.
Most Significant Bit.
Refers to a memory device that does not lose its contents when power is
removed from the device such as in an EEPROM or Flash.
The use of equipment without direct interaction with the computer
program, e.g. a deactivated remote station.
A numerical value that compensates for any difference between the zero
level of the raw value and the zero level of the engineering value.
The use of equipment while under control of, or interacting with, the
computer.
Pulse-Duration Measurement
A measurement point whose value is obtained by computing the duration
of a contact closure and comparing that duration with previously
established parameters.
A number assigned to identify a unique status, measurement, control, or
set point.
That mode of system operation in which the master station sequentially
interrogates the remote stations to obtain data. Remote stations cannot
initiate communications with the master in this mode.
A stored list of some sequence of events (SOE), such as system alarms
or message word bits.
Random Access Memory. A solid-state memory device that can be both
read and written into by the computer. RAMs are volatile memory that is
used to store data.
A binary number that represents the digital quantity supplied to the
computer from an A/D converter or other digital device.
To copy or extract information, such as when the microprocessor receives
information from an input device or memory location.
A mode of operation in which events are acted upon as soon as they
occur, such as the system response to operator commands, or the event
recorder response to system changes.
To remove the data stored at the remote stations by replacing stored data
with zeros.
Electronics Industry Association Standard for Interface between Data
Terminal and Data Communications equipment employing serial binary
Remote Terminal Unit
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