Omron SYSMAC CV Series Operation Manual page 142

syntax error
SYSMAC LINK System
SYSMAC NET Link System
SYSMAC NET Link Unit
system configuration
system error
system error message
terminator
timer
TR Area
TR bit
transfer
transmission distance
UM area
Unit
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Glossary
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 read-only bits as a
destination), and mistakes in actual application of instructions (e.g., a call to a
subroutine that does not exist).
A communications system used to create data links and enable network com-
munications between PCs.
An optical LAN formed from PCs connected through SYSMAC NET Link Units. A
SYSMAC NET Link System also normally contains nodes interfacing computers
and other peripheral devices. PCs in the SYSMAC NET Link System can pass
data back and forth, receive commands from any interfaced computer, and
share any interfaced peripheral device.
The Unit used to connect PCs to a SYSMAC NET Link System.
The arrangement in which Units in a System are connected. This term refers to
the conceptual arrangement and wiring together of all the devices needed to
comprise the System. In OMRON terminology, system configuration is used to
describe the arrangement and connection of the Units comprising a Control Sys-
tem that includes one or more PCs.
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.
The code comprising an asterisk and a carriage return (* CR) that indicates the
end of a block of data in communications between devices. Frames within a mul-
ti-frame block are separated by delimiters. Also a Unit in a Link System desig-
nated as the last Unit on the communications line.
A location in memory accessed through a TC bit and used to time down from the
timer's set value. Timers are turned ON and reset according to their execution
conditions.
A data area used to store execution conditions so that they can be reloaded later
for use with other instructions.
A bit in the TR Area.
The process of moving data from one location to another within the PC, or be-
tween the PC and external devices. When data is transferred, generally a copy
of the data is sent to the destination, i.e., the content of the source of the transfer
is not changed.
The distance that a signal can be transmitted.
The memory area used to hold the active program, i.e., the program that is being
currently executed.
In OMRON PC terminology, the word Unit is capitalized to indicate any product
sold for a PC System. Though most of the names of these products end with the
word Unit, not all do, e.g., a Remote Terminal is referred to in a collective sense
as a Unit. Context generally makes any limitations of this word clear.