Omron CP - PROGRAMMING MANUAL 05-2007 - Page 1091

1058
Model Conversion Instructions Section 3-33
Examples Data Collection Operation
The leftmost byte of D200 is 0, so COLLC(567) performs the Data Collection
Operation.
When CIO 0.00 is ON in the following example, the contents of D110 (D100 +
10) will be copied to D300 if the content of D200 is 10 (0010 BCD). The con-
tents of other words can be copied to D300 by changing the offset in D200.
FIFO Stack Operation
The leftmost byte of Of is 9, so COLLC(567) performs the FIFO Stack Opera-
tion.
When CIO 0.0 is ON in the following example, COLLC(567) allocates a 10
word stack area (since the rightmost 3 digits of Of are #010) between D100
and D109. At the same time, the contents of D101 (Bs +1) are copied to
D300. Finally, the stack pointer is decremented by 1.
LIFO Stack Operation
The leftmost byte of Of is 8, so COLLC(567) performs the LIFO Stack Opera-
tion.
When CIO 0.00 is ON in the following example, COLLC(567) allocates a 10
word stack area (since the rightmost 3 digits of Of are #010) between D100
and D109. At the same time, the contents of the source word (D100 + stack
pointer) are copied to D300. Finally, the stack pointer is decremented by 1.
D110
D100
0
D
01
0
D200
D101
0.00
D100
D200
D300
D300
4-digit BCD
Offset +10 words
Copied by COLLC(567).
Bs:
Bs
Of
COLLC
D100
D101
D109
Stack area
Stack
pointer
Stack
data area
Bs
COLLC
Of
D
D100
D300
#9010
Stack area
Stack area
Allocated stack
After 1
st
execution
After 2
nd
execution
Of
9
010
0 0 0 1
5 6 7 8
0 0 0 0
FIFO
Read
5 6 7 8
1 2 3 4
0 0 0 2
D102
D300
1 2 3 4
5 6 7 8
0.00
D100
D101
D109
Stack area
Stack
pointer
Stack
data area
Bs
COLLC
Of
D
D100
D300
#8010
Stack area
Stack area
Allocated stack
After 1
st
execution
After 2
nd
execution
Of
8
010
0 0 0 1
1 2 3 4
0 0 0 0
LIFO
Read
5 6 7 8
1 2 3 4
0 0 0 2
D102
D300
5 6 7 8
1 2 3 4
0.00