User`s manual

(6) Coincidence detection

The coincidence detection compares the count value with any point or range set by the user. The comparison

result can be notified by an input signal, or an interrupt program can be started when the both values match. The

8 points assigned to external coincidence output make it possible to work along with a complicated application.

The coincidence output function or the cam switch function can be selected depending on a purpose.

(a) Coincidence output function

With this function, one coincidence detection point per one coincidence output point can be set, and the

detection point is compared with the count value. The coincidence output signals can be reset and coincidence

detection points can be changed by the sequence program. This function can be controlled depending on the

operation condition of the equipment, such as changing the coincidence detection point based on certain

conditions. The count value can be compared with a range also.

(b) Cam switch function

With this function, the output status (ON/OFF address) of coincidence output can be preset by the user. Then

this function outputs ON/OFF signals from coincidence output comparing the preset status with the count

value. The ON/OFF switching point can be used up to 16 points.

(7) Counter function selection

One of the following functions can be selected and used for each channel.

(a) Count disable function

This function inputs a signal while Count enable command (Y06) is on, and stops counting pulses.

(b) Latch counter function

This function latches the count value of the counter when a signal is input.

This function counts pulses input during the preset time period after a signal is input.

(d) Periodic pulse counter function

This function stores the present value and the difference value of the counter at every time period preset by the

user while a signal is input.

(e) Counter compound function

Two functions can be performed simultaneously without being switched to one another along with change in

function input terminals (FUNC1, FUNC2) of external connectors.

• Count disable/preset/replace function

• Latch counter/preset/replace function