NAiS FP1, Руководство по оборудованию

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This code is used to detect errors in message transmissions. It is created by
Exclusive ORing all of the codes from the header though the last text
character, then translating the result (8-bit) data into two ASCII characters.
A group of registers used for temporary data storage. This is used for data
transmission and works effectively when there are transmission rate
differences between sending and receiving devices.
Software errors which will cause unexpected actions.
Power distribution conductors.
The Central Processing Unit is usually referred to as the CPU.
The CPU controls system activities of the programmable controller.
A symbol such as a letter of the alphabet or decimal number. An ASCII
character is most commonly used to express characters using binary.
A logical operation that inverts a signal or bit. The complement of “1” is “0”,
and the complement of “0” is “1”.
One of the communication methods between a computer and programmable
controllers. In a computer link, the computer is the host, and it can control
programmable controllers using a protocol. For FP series programmable
controllers, communication between a computer and programmable
controllers is performed using MEWTOCOL-COM, a half-duplex
communication protocol. From the computer, you can read, write, or monitor
data stored in the memory of a programmable controller.
See Central Processing Unit.
Abbreviation for cathode-ray tube.
Removing errors from a program.
The decimal number system uses the number 10 as the base and the
allowable symbols are “0”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, and “9”.
Each digit position has a weighted value of 1, 10, 100, 1000, and so on,
begining with the least significant (right-most) digit.
See full-duplex.
Electrically Erasable Programmable Read Only Memory. EEPROM can be
programmed and erased by electrical pulses.
Erasable Programmable Read Only Memory. EPROM can be reprogrammed
after being entirely erased with the use of an ultra-violet light source.
See First-In-First-Out.
The order that data is written in, and read from registers.
A relay used to detect and remember certain events in the programmable
controller. In FP series programmable controllers, some of the special
internal relays are used as flags.
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8-9. Terminology
Block Check Code (BCC):
buffer:
bug:
bus:
Central Processing Unit:
character:
complement:
computer link:
CPU:
CRT:
debug:
decimal number system:
duplex:
EEPROM:
EPROM:
FIFO:
First-In-First-Out:
flag: