iDect FC6A series - Page 202

5: F UNCTIONS AND S ETTINGS
5-16 FC6A S ERIES M ICRO S MART A LL - IN -O NE T YPE U SER ’ S M ANUAL FC9Y-B1722
Counting mode
The high-speed counter as the following five counting modes.
■ Adding counter (single-phase high-speed counter)
The adding counter counts up with the rise in pulse input.
■ Up/down selection reversible counter (single-phase high-speed counter)
Up/down selection reversible counter can switch between addition and subtraction by pulse input with the up/down selection
input. When the up/down selection input is on, the counter counts up with the rise in pulse input. When the up/down selection
input is off, the counter counts down with the rise in pulse input.
■ Dual-pulse reversible counter (single-phase high-speed counter)
This counter switches between the up count and the down count with pulse input (up) and pulse input (down). When a pulse is
input to pulse input (up), the counter counts up with the rise in pulse input. When a pulse is input to pulse input (down), the
counter counts down with the rise in pulse input.
■ 2-edge count (two-phase high-speed counter)
This counter counts by the phase difference between the A-phase and B-phase pulse input. When the A-phase precedes the B-
phase, the counter counts up with the rise and fall of the B-phase. When the B-phase precedes the A-phase, the counter counts
down with the rise and fall of the B-phase.
■ 4-edge count (two-phase high-speed counter)
This counter counts by the phase difference between the A-phase and B-phase pulse input. When the A-phase precedes the B-
phase, the counter counts up with the rise and fall of the A-phase and the B-phase. When the B-phase precedes the A-phase,
the counter counts down with the rise and fall of the A-phase and the B-phase.
10 11 12 13 14
Current value
Pulse input
(I0, I1, I3, I4, I6, I7)
10 11 12 11 10
Current value
Up/down selection
input (I1, I7)
Pulse input
(I0, I6)
10 11 12 11 10
Current value
Pulse input (down)
Input (I1, I7)
Pulse input (up)
(I0, I6)
01 1 0 22334
B-phase
Current
value
A-phase
0 1234567 7654321 08
Current
value
B-phase
A-phase