Panasonic FP-M Hardware, Руководство пользователя

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8-13. Terminology
A check method for the number of 1s in a character when data communication
is performed. The parity check is performed by calculating the number of ones
in a character.
Devices that are connected to the programmable controller.
Abbreviation for Programmable Logic Controller. See programmable
controller.
A simple transducer which works based on resistance change. The FP-M
manual-set registers work according to the potentiometers named “V0”, “V1”,
“V2”, or “V3”.
A control device which can be programmed to control process or machine
operations. A programmable controller is often referred to as a PLC when
abbreviated.
Random Access Memory. RAM provides an excellent means for easily
creating and altering a program. Many of the FP series programmable
controllers use RAM with battery backup for the application memory.
A unit of memory for various types of data. A register is usually 16 bits wide.
Read Only Memory. See EEPROM and EPROM.
An EIA communication standard for data transmission media that is less than
15 m. Most common serial communication standard.
An EIA communication standard for data transmission media.
Term for a ladder program. A rung refers to the programmed instructions that
drive one output.
Time required to read all inputs, execute the program, and update local and
remote information.
A function within the programmable controller which monitors operation and
indicates any fault that is detected.
A communication style in which data is transmitted bit by bit serially.
The last bit when a character is transmitted.
Errors resulting from the device or the environment.
The registers used only for system settings of the programmable controller.
A programming technique to operate a bit only for one scan at the moment its
input condition turns OFF from the ON state.
A number system used to express positive and negative numbers in binary. In
this system, the number becomes negative if the most significant bit of the
data is “1”. In FP series programmable controllers, numbers are expressed
using the two’s complement.
The act of going below the minimum limit in a register’s capacity.
parity check:
peripheral device:
PLC:
potentiometer:
programmable controller:
RAM:
register:
ROM:
RS232C:
RS422:
rung:
scan:
self-diagnostic function:
serial communication:
stop bit:
system errors:
system register:
trailing edge differential:
two’s complement:
underflow: