-
In an SFC program, the portion of the code showing the major process steps
main sequence
-
user-written and compiled code, that is encapsulated as a reusable instruction
function blocks
-
in an SPC program, with multiple sequences, any sequence describing control of individual parts of the process
subordinate sequence
-
a graphic control logic representation that uses standard Boolean logic symbols AND, OR, and NOT
logic gate diagrams
-
PLC text language, based on Boolean logic operators, AND, OR, and NOT and sometimes called statement List, is also known as
Instruction list
-
according to IEC-1131-3, any language used to describe and depict the process overview
primary design language
-
SFC program element, depicted as a box and defines event-, or time-dependent actions representing each phase of a process
step
-
a logic event or condition, that signals when one step should be de-activated and the next activated
transition
-
an SFC element that connects steps and defines the path of program flow from one step to the next
directed link
-
PLC graphic language, based on logic operators AND, OR, and NOT
Boolean gate flowchart
-
SFC symbol, and first operation of a sequential function chart program
initial step
-
high-level graphic design language, primarily intended for regulatory control applications
function block diagrams
-
SFC directed link, in which one of several paths is taken, depending on which transition occurs first
- alternate branching
- selective branching
-
SFC directed link, in which several paths are taken at the same time after the transition occurs
- concurrent branching
- simultaneous branching
-
another name for selective branching
alternate branching
-
a process overview design language, that allows a machine or process to be represented as a series of steps and transitions
sequential function chart
-
an SFC program element that directs program control to a specific step
reference link
-
another name for concurrent branching
simultaneous branching
-
another name for statement list, and an IEC-1131-3 text language
instruction list
-
international standard, defining PLC primary and secondary programming languages
IEC 1131-3
-
IEC-1131-3 name for the languages used to program control logic of each process step(eg ladder)
secondary languages
|
|