Omron C200H Operation Manual page 362

set
set value
shift register
Slave
Slave Rack
slot
software error
software protect
source
Special I/O Unit
SR area
subroutine
subroutine number
SV
switching capacity
syntax error
system configuration
Glossary
The process of turning a bit or signal ON.
The value from which a decrementing counter starts counting down or to
which an incrementing counter counts up (i.e., the maximum count), or the
time from which or for which a timer starts timing. Set value is abbreviated
SV.
One or more words in which data is shifted a specified number of units to the
right or left in bit, digit, or word units. In a rotate register, data shifted out one
end is shifted back into the other end. In other shift registers, new data (ei-
ther specified data, zero(s) or one(s)) is shifted into one end and the data
shifted out at the other end is lost.
Short for Remote I/O Slave Unit.
A Rack containing a Remote I/O Slave Unit and controlled through a Remote
I/O Master Unit. Slave Racks are generally located away from the CPU Rack.
A position on a Rack (Backplane) to which a Unit can be mounted.
An error that originates in a software program.
A means of protecting data from being changed that uses software as op-
posed to a physical switch or other hardware setting.
The location from which data is taken for use in an instruction, as opposed to
the location to which the result of an instruction is to be written. The latter is
called the destination.
A dedicated Unit that is designed for a specific purpose. Special I/O Units
include Position Control Units, High-Speed Counter Units, Analog I/O Units,
etc.
A data area in a PC used mainly for flags, control bits, and other information
provided about PC operation. The status of only certain SR bits may be con-
trolled by the operator, i.e., most SR bits can only be read.
A group of instructions placed after the main program and executed only if
called from the main program or activated by an interrupt.
A definer used to identify the subroutine that a subroutine call or interrupt
activates.
Abbreviation for set value.
The maximum voltage/current that a relay can safely switch on and off.
An error in the way in which a program is written. Syntax errors can include
'spelling' mistakes (i.e., a function code that does not exist), mistakes in
specifying operands within acceptable parameters (e.g., specifying reserved
SR bits as a destination), and mistakes in actual application of instructions
(e.g., a call to a subroutine that does not exist).
The arrangement in which Units in a system are connected.
359