Omron H7EC - Page 74

C-80
Preset Counter/Timer
H8GN
■
Operating Mode
Input/Output Modes and Count Values
Note: 1.
(A) indicates the minimum signal width and (B) requires at least 1/2 the minimum signal width. If these conditions are not met, a counting
error (+1 or
−
1) may occur.
2.
The following table explains the L and H symbols in the above graphics.
Up (Increment) mode (
up
upup
up
) Down (Decrement) mode (
down
downdown
down
)
Input
edge
UP
DOWN
CP1: Count input CP2: Count prohibit input
Count
Count
prohibit
n
n-1
n-2
n-3
n-4
n-5
CP1: Count input CP2: Count prohibit input
Count
Count
prohibit
CP1: Count input CP2: Count prohibit input
Count
Count
prohibit
n
n-1
n-2
n-3
n-4
n-5
CP1: Count input CP2: Count prohibit input
Count
Count
prohibit
Up/Down B Individual input (
ud-b
ud-bud-b
ud-b
)
Count
Up/Down C quadrature input (
ud-c
ud-cud-c
ud-c
)
Count
Symbol Input
H Short-circuited
LOpen