IDEC MICROSmart FC6A Series User Manual page 265

Plus CPU module
■ Single-phase high-speed counter
The single-phase high-speed counter has three operation modes, the adding counter, the up/down selection reversible counter, and the dual-

pulse reversible counter.
The up/down selection reversible counter and the dual-pulse reversible counter which can count in both directions are supported.

This counter support 100 kHz (pulse width ≥ 5 μs) maximum pulse input and is capable of counting in a range from 0 to 4,294,967,295 (32 bits).

When the current value and preset value match or an overflow or underflow occurs, a comparison output turns on or an interrupt program is

executed.
This counter support resetting the current value by special internal relay reset input and reset input. When the reset input is turned on or

when the current value reset is executed, the current value becomes the reset value specified by special data registers. For details on the
reset input, see "Reset input" on page 5-28.
Counting Mode
Adding counter
Up/down selection
reversible counter
Dual-pulse reversible
counter
*1 The Plus 16-I/O type supports only reset input by special internal relay.
The Plus 32-I/O type can use I13 as an external reset input.
■ Two-phase high-speed counter
Group 1 to 2, group 3 to 4, group 5 to 6 two-phase high-speed counter
 The two-phase high-speed counter counts with the phase difference between A-phase and B-phase pulse inputs.
 These groups support 50 kHz maximum pulse input and are capable of counting in a range from 0 to 4,294,967,295 (32 bits).
Even higher speed counting is possible by specifying 2-edge count or 4-edge count.

When the current value and preset value match or an overflow or underflow occurs, a comparison output turns on or an interrupt program is

executed.
These groups support resetting the current value by special internal relay reset input and external reset input (Z-phase). When the reset

input is turned on or the current value reset is executed, the current value becomes the reset value specified by special data registers.
Counting Mode
2-edge count
4-edge count
*1 The Plus 16-I/O type supports only reset input by special internal relay.
The Plus 32-I/O type can use I13 as an external reset input.
Frequency
Group 2, 4, 6: 100 kHz
Group 1: 100 kHz
Group 3: 100 kHz
Group 5: 100 kHz
Group 1 to 2: 100 kHz
Group 3 to 4: 100 kHz
Group 5 to 6: 100 kHz
Group 1 to 2: 100 kHz
Group 3 to 4: 100 kHz
Group 5 to 6: 100 kHz
Frequency
Group 1 to 2: 50 kHz
Group 3 to 4: 50 kHz
Group 5 to 6: 50 kHz
Group 1 to 2: 25 kHz
Group 3 to 4: 25 kHz
Group 5 to 6: 25 kHz
FC6A S MICROS
ERIES
Reset Input (Z-phase)
U ' M FC9Y-B1722
MART SER S ANUAL
5: F
UNCTIONS AND
Reset Input
—
I2
*1
I5
I2
*1
I5
I2
*1
I5
I2
*1
I5
I2
*1
I5
S
ETTINGS
5-19