Omron SYSMAC CP Series, User Manual

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11 High-speed Counters
11-8
CP2E CPU Unit Software User’s Manual(W614)
11-2 High-speed Counter Inputs
There are four pulse input methods for high-speed counters.
• Increment pulse input
• Differential phase input (4×)
• Up/Down pulse input
• Pulse+direction input
The Increment Pulse Input counts signals on a single-phase pulse input. Only incrementing the count is
possible in this mode.
The Differential Phase Input uses two phase signals (phase A and phase B) and increments/decre-
ments the count according to the status of Differential Phase (4×).
The Up/Down Pulse Input uses two signals, an increment pulse and a decrement pulse.
11-2-1 Pulse Input Methods Settings
Increment Pulse Input
Conditions for Incrementing
the Count
Differential Phase Input (4×)
Conditions for Incrementing/
Decrementing the Count
Up/Down Pulse Input
Conditions for Incrementing/
Decrementing the Count
P u lse
14 2 15 1 16 0 9 10 8 7 6 11 5 12 4 13 3
P u lse Co u nt v al u e
Increment
N o change
N o change
N o change
· Only rising edges are co u nted.
OFF
→
O N
O N
O N
→
OFF
OFF
11 12 11 10 10 9 9 8 8 8 7 7 7 6 6 6 5 5 5 4 4 4 3 3 3 2 2 2 1 1 0
Phase A
Phase B
×4
Phase A Phase B Co u nt v al u e
Increment
Increment
Increment
Increment
Decrement
Decrement
Decrement
Decrement
OFF
O N
OFF
→
O N
O N
→
OFF
O N
→
OFF
O N
→
OFF
O N
→
OFF
OFF
→
O N
OFF
→
O N
O N
OFF
OFF
OFF
→
O N O N
O N
OFF
Increment
p
u lse
Decrement
p
u lse
2 2 1 1 0 0 7 6 8 7 6 5 5 4 4 3 3
Increment
p
u l s e
Decrement
p
u l s e
Co u nt v a l u e
Decrement
No ch
a nge
Increment
· The co u nt i s incremented for e a ch increment
p u l s e a nd decremented for e a ch decrement
p u l s e.
· Only ri s ing edge s a re co u nted.
No ch a nge
No ch a nge
No ch a nge
No ch a nge
No ch a nge
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
→
OFF
ON
→
OFF
ON
→
OFF
ON
→
OFF
OFF
→
ON
OFF
→
ON
OFF
→
ON
OFF
→
ON