
Glossary
Original Ć June 1990CE4.2:CL6211
Target Device Any system device that receives point information, commonly a display
device that shows the information to an operator.
TC Abbreviation: Thermocouple
Template A matrix of values used to define set points for DCD or Group points, or
to define alias names for unit operations.
Trace To view register or accumulator contents throughout the execution of a
control algorithm, as part of verifying configurations. Trace programs also
commonly let the user insert specific values into registers or
accumulators and check their influence on algorithm results, without
affecting actual output signals to field devices.
Trace Point An FST step at which the operator, using the trace utility, can see the
contents of a register or accumulator. Typically, the operator can set as
many as 10 trace points in an FST (that is, designate as many as 10 of
the FST steps to be trace points).
Transducer A device that converts one physical signal to another type, for example,
an electrical signal into a mechanical signal.
TransistorĆTransistor Logic (TTL)
The basis of a popular family of integrated circuit devices for logic
functions. These devices have arrays of bipolar transistors in which 0
volts represents a logical 0, and 5 volts represents a logical 1.
Trip Point [See Alarm Trip Point]
TTL Acronym: TransistorĆTransistor Logic
Tuning The adjustment of control terms or parameter values to produce a
desired control effect.
Tuning Parameter
A parameter which is adjustable without reconfiguring a device; an
operator adjusts such a parameter to alter control effects. Common
examples are gain, rate, reset, and alarm trip points. Such parameters
appear in detail displays.
U
Ultraviolet ReadĆOnly Memory (UVROM)
A semiconductor memory device that is programmable electrically, but
erasable only by exposure to highĆintensity ultraviolet light. Another
name for Erasable Programmable ReadĆOnly Memory.
Tar - Ult
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