Omron NJ501-1500 User Manual

2 Instruction Descriptions
2-802
NJ-series Instructions Reference Manual (W502)
Execution condition
Value of Trigger from previous task period
Processing started.
Processing
Variable to read
Variable Data type Initial value Comment
ST
IF ( (Trigger=TRUE) AND (LastTrigger=FALSE) AND (_Card1Ready=TRUE) ) THEN
OperatingStart:=TRUE;
Operating :=TRUE;
END_IF;
LastTrigger:=Trigger;
IF (OperatingStart=TRUE) THEN
FileReadVar_instance(
Execute :=FALSE,
ReadVar:=Var1);
OperatingStart :=FALSE;
END_IF;
IF (Operating=TRUE) THEN
FileReadVar_instance(
Execute :=TRUE,
FileName :=’File1.dat’,
ReadVar :=Var1);
IF (FileReadVar_instance.Done=TRUE) THEN
Operating:=FALSE;
END_IF;
IF (FileReadVar_instance.Error=TRUE) THEN
Operating:=FALSE;
END_IF;
END_IF;
// Detect when Trigger changes to TRUE.
// Initialize FileReadVar instruction.
// File name
// Variable to read
// Execute FileReadVar instruction.
// Processing after normal end.
// Processing after error end.
Trigger
LastTrigger
OperatingStart
Operating
Var1
FileReadVar_instance
False
False
False
False
[1000(0)]
BOOL
BOOL
BOOL
BOOL
ARRAY[0..999] OF INT
FileReadVar
_Card1Ready
BOOL
Variable Data type Comment
SD Memory Card Ready Flag
Internal Variables
External Variables

Omron NJ501-1500 Specifications

General

Brand	Omron
Model	NJ501-1500
Category	Controller
Language	English