A communication link in which data can be transmitted and received at the
same time.
A communication link in which transmission is limited to one direction at a
time.
The hexadecimal number system uses 16 as the base. The allowable symbols
are numbers 0 through 9 and letters A through F. The letters are substituted
for numbers 10 to 15, respectively, to represent all 16 numbers in one digit.
The binary number system can easily be represented in hexadecimal with 4
bit groups. In this manner, a very large binary number can be represented by
a hexadecimal number with significantly fewer digits.
The memory area whose contents will not be lost or modified if operating
power is lost or if the mode of the programmable controller is changed from
RUN to PROG.
The act of performing a more urgent task by putting off the presently
executing task. FP series programmable controllers have three types of
interrupts, as follows:
- input initiated interrupt
- high-speed counter initiated interrupt
- time initiated interrupt
Abbreviation of Input/Output.
Taking the input data at the input interface into the memory for program
execution and outputting the result of program execution to the output
interface.
A standard for representing relay-logic systems.
Abbreviation for Liquid Crystal Display.
A programming technique to operate a bit only for one scan at the moment
its input condition turns ON from the OFF state.
The bit which represents the smallest value in a byte, word, or double-word.
The digit which represents the smallest value in a number.
Abbreviation for Light-Emitting Diode.
Incorrect function.
A
0
1
1
Digit position
Hexadecimal
9
3
F
2
0
1
11
1
8
1
1 0
1
3
0
1
15
0
1
12
1 1
0
0
7
4
0 0
Bit position
Binary
•
•
•
•
•
•
•
•
Most significant
digit
Least significant
digit
257
8-9. Terminology
full-duplex:
half-duplex:
hexadecimal:
hold:
interrupt:
I/O:
I/O update:
ladder diagram:
LCD:
leading edge differential:
Least Significant Bit (LSB):
Least Significant Digit (LSD):
LED:
malfunction:
Summary of Contents for FP1
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