Omron CQM1H - PROGRAM User Manual

Glossary
563
overseeing Part of the processing performed by the CPU that includes general tasks re-
quired to operate the PC.
overwrite Changing the content of a memory location so that the previous content is lost.
parity Adjustment of the number of ON bits in a word or other unit of data so that the
total is always an even number or always an odd number. Parity is generally
used to check the accuracy of data after being transmitted by confirming that
the number of ON bits is still even or still odd.
parity check Checking parity to ensure that transmitted data has not been corrupted.
PC See Programmable Controller.
PC configuration The arrangement and interconnections of the Units that are put together to
form a functional PC.
PC System With building-block PCs, all of the Units connected up to, but not including, the
I/O devices. The boundaries of a PC System are the PC and the program in its
CPU at the upper end; and the I/O Units at the lower end.
PCB See printed circuit board.
PC Setup A group of operating parameters set in the PC from a Programming Device to
control PC operation.
Peripheral Device Devices connected to a PC System to aid in system operation. Peripheral de-
vices include printers, programming devices, external storage media, etc.
peripheral servicing Processing signals to and from peripheral devices, including refreshing, com-
munications processing, interrupts, etc.
port A connector on a PC or computer that serves as a connection to an external
device.
positive delay A delay set for a data trace in which recording data begins after the trace signal
by a specified amount.
Power Supply Unit A Unit that connected to a PC that provides power at the voltage required by
the other Units.
present value The current value registered in a device at any instant during its operation.
Present value is abbreviated as PV. The use of this term is generally restricted
to timers and counters.
printed circuit board A board onto which electrical circuits are printed for mounting into a computer
or electrical device.
PROGRAM mode A mode of operation that allows inputting and debugging of programs to be car-
ried out, but that does not permit normal execution of the program.
Programmable Controller A computerized device that can accept inputs from external devices and gen-
erate outputs to external devices according to a program held in memory. Pro-
grammable Controllers are used to automate control of external devices.
Although single-unit Programmable Controllers are available, building-block
Programmable Controllers are constructed from separate components. Such
Programmable Controllers are formed only when enough of these separate
components are assembled to form a functional assembly.
programmed alarm An alarm given as a result of execution of an instruction designed to generate
the alarm in the program, as opposed to one generated by the system.
programmed error An error arising as a result of the execution of an instruction designed to gen-
erate the error in the program, as opposed to one generated by the system.

Omron CQM1H - PROGRAM Specifications

General

I/O Capacity	Up to 512 points
Power Supply	100 to 240 VAC, 50/60 Hz or 24 VDC (depending on model)
Instruction Set	Basic and advanced instructions
Operating Temperature	0 to 55°C
Program Capacity	7.2K to 15.2K steps
Communication Ports	RS-232C
Expansion Slots	Up to 3 expansion units
Type	Programmable Logic Controller (PLC)
CPU Type	RISC
Program Memory	7.2K to 15.2K steps
I/O Points	512 max
Expansion Capability	Up to 3 expansion units
Data Memory	RAM (battery backup)