Omron SYSMAC C20P Operation Manual page 204

Programming Console
Programming Device
PROGRAM mode
PROM Writer
prompt
PV
refresh
relay-based control
Remote I/O Master Unit
Remote I/O Slave Unit
Remote I/O System
Remote I/O Unit
reset
return
reversible counter
202
Glossary
The simplest form or Programming Device available for a PC. Programming
Consoles are available both as hand-held models and as CPU-mounting
models.
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,
such as Programming Consoles, and there are non-dedicated devices, such
as a host computer.
A mode of operation that allows for inputting and debugging programs but
that does not permit normal execution of the program.
A Peripheral Device used to write programs and other data into a ROM for
permanent storage and application.
A message or symbol that appears on a display to request input from the op-
erator.
Short for present value.
The process of updating output status sent to external devices so that it
agrees with the status of output bits held in memory and of updating input
bits in memory so that they agree with the status of inputs from external de-
vices.
The forerunner of PCs. In relay-based control, groups of relays are wired to
each other to form control circuits. In a PC, these are replaced by program-
mable circuits.
The Unit in a Remote I/O System through which signals are sent to all other
Remote I/O Units. The Remote I/O Master Unit is mounted either to a
C200H, C500, C1000H, or C2000H CPU Rack or an Expansion I/O Rack
connected to the CPU Rack. Remote I/O Master Unit is generally abbreviated
to simply "Master."
A Unit mounted to a C200H, C500, C1000H, or C2000H Backplane to form a
Slave Rack. Remote I/O Slave Unit is generally abbreviated to simply
"Slave."
A C200H, C500, C1000H, or C2000H system in which remote I/O points are
controlled through a Master mounted to a CPU Rack or an Expansion I/O
Rack connected to the CPU Rack. K-type PCs can be connected to Remote
I/O Systems through I/O Link Units.
Any of the Units in a Remote I/O System. Remote I/O Units include Masters,
Slaves, Optical I/O Units, I/O Link Units, and Remote Terminals.
The process of turning a bit or signal OFF or of changing the present value of
a timer or counter to its set value or to zero.
The process by which instruction execution shifts from a subroutine back to
the point from which the subroutine was called. A return is automatic upon
completion of the subroutine and the return is always to .
A counter that can be both incremented and decrement depending on a spe-
cified condition(s).