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5 BASIC USAGE
5.3 Using the Coincidence Output Function
5 - 7
The coincidence output function presets any count value, compares it with the present
counter value, and outputs a signal when they match. For the coincidence output, 2
points can be set for each channel. To use the coincidence signal external output, turn
ON the coincidence signal enable command {Y02(Y0A)}.
(1) Coincidence Output Operation
Count-enable command
{Y04 (Y0C)}
Coincidence-signal enable command
{Y02 (Y0A)}
Counter input pulse
Coincidence output point setting No. 1
Buffer memory
(Addresses 4
to 5
(24
to 25
))
H
H
H
H
Counter value small (point No. 1)
{X03 (X0A)}
Counter value coincidence (point No. 1)
{X02 (X09)}
Coincidence signal No. 1 reset command
{Y00 (Y08)}
Counter value large (point No. 1)
{X01 (X08)}
Buffer memory for storing present values
(Addresses 2
to 3
(22
to 23
))
H
H
H
H
Number
The coincidence output point set values are written in advance as 32-bit signed
1)
binary values in the coincidence output point No. 1 buffer memory {addresses 4
to 5
(24
H
H
When the count value becomes the coincidence output point set value, the counter
2)
value small signal turns OFF and the counter value coincidence signal turns ON.
When the coincidence signal reset command is turned ON, the counter value
3)
coincidence signal is reset. If the counter value coincidence signal stays ON, the
next coincidence signal cannot be output.
When the counter value becomes greater than the coincidence output point set
4)
value, the counter value large signal turns ON.
ON
OFF
ON
OFF
1) 100
ON
OFF
ON
OFF
ON
OFF
ON
OFF
0
1
Description
to 25
)}.
H
MELSEC-Q
2)
3)
4)
101
2
99
100
to
98
102
103
H
5 - 7
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