Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

ST
Internal
Variables
External
Variables
// Detect when Trigger changes to TRUE.
IF ( (Trigger=TRUE) AND (LastTrigger=FALSE) AND (_Card1Ready=TRUE) ) THEN
OperatingStart:=TRUE;
Operating
END_IF;
LastTrigger:=Trigger;
// Initialize FileReadVar instruction.
IF (OperatingStart=TRUE) THEN
FileReadVar_instance(
Execute
ReadVar
OperatingStart:=FALSE;
END_IF;
// Execute FileReadVar instruction.
IF (Operating=TRUE) THEN
FileReadVar_instance(
Execute
FileName :='File1.dat', // File name
ReadVar
IF (FileReadVar_instance.Done=TRUE) THEN
// Processing after normal end.
Operating:=FALSE;
END_IF;
IF (FileReadVar_instance.Error=TRUE) THEN
// Processing after error end.
Operating:=FALSE;
END_IF;
END_IF;

NY-series Instructions Reference Manual (W560)

Variable Data type
Trigger BOOL
LastTrigger BOOL
OperatingStart BOOL
Operating BOOL
ARRAY[0..999]
Var1
OF INT
FileReadVar_instance FileReadVar
Variable
_Card1Ready
:=TRUE;
:=FALSE,
:=Var1);
:=TRUE,
:=Var1); // Variable to read
Initial
value
FALSE Execution condition
Value of Trigger from previous task
FALSE
period
FALSE Processing started.
FALSE Processing
[1000(0)] Variable to read
Data type Comment
BOOL SD Memory Card Ready Flag
2 Instruction Descriptions
Comment
2-1253
2