Omron CQM1H - PROGRAM Programming Manual page 580

Programmable controllers; inner boards
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condition
CONFIG.SYS
constant
control bit
control data
control signal
Control System
controlled system
count pulse
counter
CPU
CTS
CX-Programmer
CX-Protocol
CY
cycle
cycle time
cyclic interrupt
data area
data area boundary
data disk
data length
Glossary
A symbol placed on an instruction line to indicate an instruction that controls
the execution condition for the terminal instruction. Each condition is assigned
a bit in memory that determines its status. The status of the bit assigned to
each condition determines the next execution condition. Conditions corre-
spond to LOAD, LOAD NOT, AND, AND NOT, OR, or OR NOT instructions.
An MS DOS file containing environment settings for a personal computer.
An input for an operand in which the actual numeric value is specified. Con-
stants can be input for certain operands in place of memory area addresses.
Some operands must be input as constants.
A bit in a memory area that is set either through the program or via a Program-
ming Device to achieve a specific purpose, e.g., a Restart Bit is turned ON and
OFF to restart a Unit.
An operand that specifies how an instruction is to be executed. The control
data may specify the part of a word is to be used as the operand, it may specify
the destination for a data transfer instructions, it may specify the size of a data
table used in an instruction, etc.
A signal sent from the PC to effect the operation of the controlled system.
All of the hardware and software components used to control other devices. A
Control System includes the PC System, the PC programs, and all I/O devices
that are used to control or obtain feedback from the controlled system.
The devices that are being controlled by a PC System.
The signal counted by a counter.
A dedicated group of digits or words in memory used to count the number of
times a specific process has occurred, or a location in memory accessed
through a TIM/CNT bit and used to count the number of times the status of a
bit or an execution condition has changed from OFF to ON.
See central processing unit.
An acronym for clear-to-send, a signal used in communications between elec-
tronic devices to indicate that the receiver is ready to accept incoming data.
Windows-based Support Software for programming SYSMAC PCs.
Windows-based Support Software for the protocol macro function of SYSMAC
PCs.
See Carry Flag.
One unit of processing performed by the CPU, including ladder program exe-
cution, peripheral servicing, I/O refreshing, etc.
The time required to complete one cycle of CPU processing.
See scheduled interrupt.
An area in the PC's memory that is designed to hold a specific type of data.
The highest address available within a data area. When designating an oper-
and that requires multiple words, it is necessary to ensure that the highest ad-
dress in the data area is not exceeded.
A floppy disk used to save user programs, DM area contents, comments, and
other user data.
In communications, the number of bits that is to be treated as one unit in data
transmissions.
555

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