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19  BUILT-IN I/O FUNCTION
19.1  High-speed Counter Function
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19
Assignment for high-speed counters
Input assignment for high-speed counters
Assignment for input devices of high-speed counters is set by parameters.
Assignment is determined according to functions set for each channels by parameter.
When using internal clock, assignment is same as 1-phase, 1-count (S/W) and phase A is not used.
Input assignment of high-speed counters is as follows.
A: A phase input
B: Phase B input (direction switch input is however employed in the case of 1-phase 1-count [H/W])
P: External preset input
E: External enable input
CH
High-speed counter 
type
X0
X1
X2
X3
X4
X5
X6
X7
X10
X11
X12
X13
X14
X15
X16
X17
CH1
1-phase 1-count (S/W)
A
P
E
1-phase 1-count (H/W)
A
B
P
E
1-phase 2-count
A
B
P
E
2-phase 2-count
A
B
P
E
CH2
1-phase 1-count (S/W)
A
P
E
1-phase 1-count (H/W)
A
B
P
E
1-phase 2-count
A
B
P
E
2-phase 2-count
A
B
P
E
CH3
1-phase 1-count (S/W)
A
P
E
1-phase 1-count (H/W)
A
B
P
E
1-phase 2-count
A
B
P
E
2-phase 2-count
A
B
P
E
CH4
1-phase 1-count (S/W)
A
P
E
1-phase 1-count (H/W)
A
B
P
E
1-phase 2-count
A
B
P
E
2-phase 2-count
A
B
P
E
CH5
1-phase 1-count (S/W)
A
P
E
1-phase  1-count  (H/W)
A
B
P
E
1-phase 2-count
A
B
P
E
2-phase 2-count
A
B
P
E
CH6
1-phase 1-count (S/W)
A
P
E
1-phase 1-count (H/W)
A
B
P
E
1-phase 2-count
A
B
P
E
2-phase 2-count
A
B
P
E
CH7
1-phase 1-count (S/W)
A
P
E
1-phase 1-count (H/W)
A
B
P
E
1-phase 2-count
A
B
P
E
2-phase 2-count
A
B
P
E
CH8
1-phase 1-count (S/W)
A
P
E
1-phase 1-count (H/W)
A
B
1-phase 2-count
A
B
2-phase 2-count
A
B
CH1 
to 
CH8
Internal clock
Not used