svelayutham
Guest
S
cilect scada
which language used for back end of citect scada ?
which language used for back end of citect scada ?
svelayutham
Guest
OP
PLC
WHAT SF CHART ? EXPLAIN GIVE SOME EXAMPLES .
WHAT SF CHART ? EXPLAIN GIVE SOME EXAMPLES .
Hellop;
SFC (also known as GRAFCET) is a design tool for automation control (it can be used to organize Ladder logic, or it can be used as a programming tool).
Break down your process in distinct and logically seperate steps (actions). Determine the logic that will enable each step at its own time (transitions). Setup a structure that will allow logic to flow from one step to another according to strict rules of evolution (only one transition valid in a sequence at any one time; only one step active, , unless the evolution requires parallel processing of logic [AND evolution]; etc...)
It is a very powerfull tool for sequential process design (conveyor lines, packaging lines, etc...)
The following diagram is extracted from a process we are controlling in PCS7, with the SFC editor.
Hope this helps,
Daniel Chartier
SFC (also known as GRAFCET) is a design tool for automation control (it can be used to organize Ladder logic, or it can be used as a programming tool).
Break down your process in distinct and logically seperate steps (actions). Determine the logic that will enable each step at its own time (transitions). Setup a structure that will allow logic to flow from one step to another according to strict rules of evolution (only one transition valid in a sequence at any one time; only one step active, , unless the evolution requires parallel processing of logic [AND evolution]; etc...)
It is a very powerfull tool for sequential process design (conveyor lines, packaging lines, etc...)
The following diagram is extracted from a process we are controlling in PCS7, with the SFC editor.
Hope this helps,
Daniel Chartier
Contact Citect www.citect.com and ask them, although I fail to see why it matters.
andybutcher
Member
Citect uses CICODE and Visual Basic as it's background coding. visual basic is only available in the later versions (5.4 ->).
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