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Table 1: Instruction Data Types
Function Argument Data Types Edge Triggered

plc glossary -35.1

1. COMBINED GLOSSARY OF TERMS
2. A

abort -the disrupption of normal operation.

absolute pressure -a pressure measured relative to zero pressure.

absorption loss -when sound or vibration energy is lost in a transmitting or reflecting medium. This is the result of generation of other forms of energy such as heat.

absorbtive law -a special case of Boolean algebra where A(A+B) becomes A.

AC (Alternating Current) -most commonly an electrical current and voltage that changes in a sinusoidal

pattern as a function of time. It is also used for voltages and currents that are not steady (DC).

Electrical power is normally distributed at 60Hz or 50Hz.

AC contactor -a contactor designed for AC power.

acceptance test -a test for evaluating a newly purchased system’s performance, capabilities, and conformity

to specifications, before accepting, and paying the supplier.

accumulator -a temporary data register in a computer CPU.

accuracy -the difference between an ideal value and a physically realizable value. The companion to

accuracy is repeatability.

acidity -a solution that has an excessive number of hydrogen atoms.

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