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3. SPECIFICATIONS
3.3 Functions
Name
Coincidence output function
Preset function
Ring counter function
Count disable function
Latch counter function
Sampling counter function
Periodic pulse counter function
The following table lists the high-speed counter module functions.
Outputs an ON/OFF signal in a specified output status, comparing
it with the present value.
Counting alternates between the preset value and the ring counter
value.
The preset operation can be done either by a sequence program or
by an external preset input.
Counting alternates between the preset value and the ring counter.
Stops counting pulses while the count enable command is ON.
Stores the present value of the counter into the remote registers
when the signal of the counter function selection start command is
input.
After the signal of the counter function selection start command is
input, input pulses are counted during a preset sampling period
and stored into the remote registers.
While the signal of the counter function selection start command is
input, input pulses are stored into the remote registers at preset
intervals.
POINT
(1) These functions can be used together. However, only one function can be
selected from the counter function selection.
(2) The preset function and counter function selection can be executed not only
through a sequence program, but also through external input.
• To use the preset function, apply voltage to the PRESET terminal.
• To use a function from the counter function selection, apply voltage to the
F.START terminal.
Description
3 - 8
MELSEC-A
Refer To
Section
6.1
Section
7.1
Section
8.1
Section
9.2
Section
9.3
Section
9.4
Section
9.5
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