Panasonic FP Series - Page 898

High-speed counter instructions
897
Part III FP Instructions
Incremental and decremental counting with maximum target value control:
14000
10000
8000
4000
2000
t [ms]
y
1
2
0
1
2
3
4
3
y Elapsed value of high-speed counter 14000 Maximum target value
1
Execution condition 10000 Target value 4
2
High-speed counter control flag 8000 Target value 3
3
Output relay 0-4 4000 Target value 2
2000 Target value 1
Overview:
Maximum target value
control:
enabled disabled (see note)
Incremental counting:
The pointer of the data table
moves from target value 1
to the last target value.
When the elapsed value reaches the
maximum target value:
 the pointer returns to target
value 1
 output relay 0 turns to TRUE
 the elapsed value is set to 0
When the elapsed value reaches the last
target value:
 the pointer returns to target value 1
 output relay 0 turns to TRUE
 the elapsed value continues to
increment and restarts at the
minimum value of the ring counter
Decremental counting:
The pointer of the data table
moves from the last target
value to target value 1.
When the elapsed value reaches the
value -1:
 the pointer returns to the last
target value
 the output relay corresponding
to the last target value turns to
TRUE
 the elapsed value is set to the
maximum target value
When the elapsed value reaches the
value -1:
 the pointer returns to target value n
 the output relay corresponding to
the last target value turns to TRUE
 the elapsed value continues to
decrement and restarts at the
maximum value of the ring counter
Provided that neither a reset input nor a software reset is being used.
Hardware reset operation
Channel Hardware reset input
0
1
X2
2
3
X5