Omron C200HX Operation Manual page 574

Slave
Slave Rack
slot
software error
software protect
source
Special I/O Unit
SR area
SSS
subroutine
subroutine number
SV
switching capacity
syntax error
SYSMAC Support Software
system configuration
system error
system error message
TC area
TC number
556
Glossary
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 opposed
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 in-
clude 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 pro-
vided about PC operation. The status of only certain SR bits may be controlled
by the operator, i.e., most SR bits can only be read.
Abbreviation for SYSMAC Support Software.
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 acti-
vates.
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 specify-
ing 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).
A software package installed on a IBM PC/AT or compatible computer to func-
tion as a Programming Device.
The arrangement in which Units in a system are connected.
An error generated by the system, as opposed to one resulting from execution of
an instruction designed to generate an error.
An error message generated by the system, as opposed to one resulting from
execution of an instruction designed to generate a message.
A data area that can be used only for timers and counters. Each bit in the TC area
serves as the access point for the SV, PV, and Completion flag for the timer or
counter defined with that bit.
A definer that corresponds to a bit in the TC area and used to define the bit as
either a timer or a counter.