Omron CPM1A operation manual Config.Sys, Cts

	Glossary
Completion Flag	A flag used with a timer or counter that turns ON when the timer has timed out or
	the counter has reached its set value.
condition	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 correspond to
	LOAD, LOAD NOT, AND, AND NOT, OR, or OR NOT instructions.
CONFIG.SYS	An MS-DOS file containing environment settings for a personal computer.
constant	An input for an operand in which the actual numeric value is specified. Constants
	can be input for certain operands in place of memory area addresses. Some
	operands must be input as constants.
control bit	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.
control data	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.
control signal	A signal sent from the PC to effect the operation of the controlled system.
Control 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.
controlled system	The devices that are being controlled by a PC System.
count pulse	The signal counted by a counter.
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.
CPU Unit	See central processing unit.
CTS	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.
CY	See Carry Flag.
cycle	One unit of processing performed by the CPU Unit, including ladder program
	execution, peripheral servicing, I/O refreshing, etc.
cycle time	The time required to complete one cycle of CPU Unit processing.
cyclic interrupt	See scheduled interrupt.
data area	An area in the PC’s memory that is designed to hold a specific type of data.
data area boundary	The highest address available within a data area. When designating an operand
	that requires multiple words, it is necessary to ensure that the highest address in
	the data area is not exceeded.
data disk	A floppy disk used to same user programs, DM area contents, comments, and
	other user data.
data length	In communications, the number of bits that is to be treated as one unit in data
	transmissions.

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