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Glossary
349
are usually the ON/OFF states of bits, or the logical combination of such
states, called execution conditions.
exection condition
The ON or OFF status under which an instruction is executed. The execution
condition is determined by the logical combination of conditions on the same
instruction line and up to the instruction currently being executed.
execution time
The time required for the CPU to execute either an individual instruction or
an entire program.
Expansion I/O Backplane
A Backplane which is used to create an Expansion I/O Rack.
Expansion I/O Rack
Part of a building-block PC, an Expansion I/O Rack is connected to either a
CPU Rack or another Expansion I/O Rack to increase the number of slots
available for mounting Units.
extended counter
A counter created in a program by using two or more count instructions in
succession. Such a counter is capable of counting higher than any of the
standard counters provided by the individual instructions.
extended timer
A timer created in a program by using two or more timers in succession.
Such a timer is capable of timing longer than any of the standard timers pro-
vided by the individual instructions.
Factory Intelligent Terminal
A programming device provided with advanced programming and debugging
capabilities to facilitate PC operation. The Factory Intelligent Terminal also
provides various interfaces for external devices, such as floppy disk drives.
fatal error
An error that stops PC operation and requires correction before operation
can continue.
FIT
Abbreviation for Factory Intelligent Terminal.
flag
A dedicated bit in memory that is set by the system to indicate some type of
operating status. Some flags, such as the carry flag, can also be set by the
operator or via the program.
flicker bit
A bit that is programmed to turn ON and OFF at a specific frequency.
floating point decimal
A decimal number expressed as a number between 0 and 1 (the mantissa)
multiplied by a power of 10, e.g., 0.538 x 10
-5
.
Floppy Disk Interface Unit
A Unit used to interface a floppy disk drive to a PC so that programs and/or
data can be stored on floppy disks.
force reset
The process of forcibly turning OFF a bit via a programming device. Bits are
usually turned OFF as a result of program execution.
force set
The process of forcibly turning ON a bit via a programming device. Bits are
usually turned ON as a result of program execution.
function code
A two-digit number used to input an instruction into the PC.
GPC
Acronym for Graphic Programming Console.
Содержание SYSMAC C200H
Страница 1: ...OPERATION MANUAL C200H CPU01 E 03 E 11 E SYSMAC Programmable Controllers Cat No W130 E1 05 ...
Страница 2: ...C200H Programmable Controllers CPU01 E 03 E 11 E Operation Manual Revised June 2003 ...
Страница 3: ...iv ...
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Страница 8: ...TABLE OF CONTENTS ix Glossary 345 Index 363 Revision History 369 ...
Страница 342: ...336 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Страница 374: ...Cat No W130 E1 05 C200H Programmable Controllers CPU01 E 03 E 11 E OPERATION MANUAL ...