Omron NJ501-1500 User Manual

2-477
2 Instruction Descriptions
NJ-series Instructions Reference Manual (W502)
Stack and Table Instructions
2
StackFIFO and StackLIFO
z StackLIFO
The StackLIFO instruction removes the top value from a stack. Value of InOut[Num−1] is assigned to
OutVal. Then, Num is decremented.
The following example is for when Size is UINT#5 and Num is UINT#2.
• Use the same data type for InOut[] and OutVal.
• When an element in the array is passed to InOut[], all elements below the passed element are pro-
cessed.
• The values in InOut[], Num, and OutVal do not change if the value of Size or Num is 0.
• Return value Out is not used when the instruction is used in ST.
• An error occurs in the following cases. ENO will be FALSE, and OutVal will not change.
• InOut[] and OutVal have different data types.
• The values of Num and Size are not 0 and Num is greater than Size.
• The value of Size exceeds the array area of InOut[].
• InOut[] is a STRING array and any of the elements does not end in a NULL character.
• InOut[] is a STRING array and the number of bytes in the elements exceeds the size of OutVal.
Refer to the sample programming that is provided for the StackPush instruction (page 2-466).
Precautions for Correct Use
Sample Programming
StackLIFO(abc[1], def, UINT#5, ghi);
LD ST
abc[1]
def
ghi
StackLIFO
EN ENO
InOut
OutVal
Size
Num
abc[1]
def
UINT#5
ghi
Num = ghi
OutVal = def
Num = ghi
OutVal = def
Decremented.
Removed.
1234
2345
3456
0
0
Size=UINT#5
UINT#3
1234
2345
3456
0
0
UINT#2
INT#3456
InOut[0]=abc[1]
InOut[1]=abc[2]
InOut[2]=abc[3]
InOut[3]=abc[4]
InOut[4]=abc[5]
InOut[0]=abc[1]
InOut[1]=abc[2]
InOut[2]=abc[3]
InOut[3]=abc[4]
InOut[4]=abc[5]

Omron NJ501-1500 Specifications

General

Model	NJ501-1500
CPU Type	Intel Atom
SD Memory Card Slot	Yes
Power Supply Voltage	24 V DC
Power Consumption	30 W
Operating Temperature	0 to 55 °C
USB Port	Yes
Power Supply	Built-in