Omron C200H-MC221 Operation Manual page 296

NO contacts
OFF
offline
offset
ON
online
online edit
origin proximity input
origin search
output
parameters
PC
PC Setup
positive software limit
present value
program block
Programmable Controller
Programming Device
276
Glossary
Normally-open contacts. A pair of contacts on a relay that close when the relay is
energized.
The status of an input or output when a signal is said not to be present. The OFF
state is generally represented by a low voltage or by non-conductivity, but can be
defined as the opposite of either.
The state in which a Programming Device is not functionally connected to the
CPU, although it may be connected physically.
A positive or negative value added to a base value such as an address to specify
a desired value.
The status of an input or output when a signal is said to be present. The ON state
is generally represented by a high voltage or by conductivity, but can be defined
as the opposite of either.
The state in which a Programming Device is functionally connected to the CPU
so that CPU data and programs can be monitored or accessed.
An edit to a program made from a peripheral device connected to and currently
online with a PC in PROGRAM or MONITOR mode. In MONITOR mode, this
means that the program is changed while it is actually being executed.
A signal input to indicate that the axis is near the origin.
An operation used to automatically move the axes to the origin or to define the
origin.
The signal sent from the PC to an external device. The term output is often used
abstractly or collectively to refer to outgoing signals.
Data which determines limits and other conditions under which an operation will
be carried out.
An acronym for Programmable Controller.
A group of operating parameters set in the PC from a Programming Device to
control PC operation.
The upper limit on the number of pulses set as a software parameter.
The current value registered in a device at any instant during its operation. Pres-
ent value is abbreviated as PV. The use of this term is generally restricted to tim-
ers and counters.
A unit of programming in MC programs roughly equivalent to program lines.
A computerized device that can accept inputs from external devices and gener-
ate 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, i.e., there is no one
individual Unit called a PC.
A Peripheral Device used to input a program into a PC or to alter or monitor a
program already held in the PC. There are dedicated programming devices,