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9. SELECTING AND EXECUTING THE COUNTER FUNCTION
9.2 Count Disable Function
Count enable command
{RY(n+1)4(RY(n+1)B)}
Counter function selection
start command
{RY(n+1)6(RY(n+1)D)}
Count function detection
{RX(n+1)1(RX(n+1)3)}
Present value storage area
{Addresses RWrn0 to 1
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This function stops the counting operation while the count enable command is on.
The following chart shows the relationships between the count enable command, the
counter function selection start command and the counter's present value.
1)
ON
OFF
ON
OFF
ON
OFF
0
(RWrn8 to 9)}
Count
operation
stop
1) ...... Count operation starts when the count enable command {RY(n+1)4
(RY(n+1)B} switches on.
2) ...... Count operation stops when the counter function selection start command
{RY(n+1)6 (RY(n+1)D), F.START terminal} switches on.
Also, the counter function detection {RX(n+1)1 (RX(n+1)3)} switches on when
the counter function selection start command {RY(n+1)6 (RY(n+1)D)} switches
on.
3) ...... Count operation resumes when the counter function selection start command
{RY(n+1)6 (RY(n+1)D), F.START terminal} switches off.
Also, the counter function detection {RX(n+1)1 (RX(n+1)3)} switches off when
the counter function selection start command {RY(n+1)6 (RY(n+1)D)} switches
off.
4) ...... Count operation stops when the count enable command {RY(n+1)4
(RY(n+1)B} switches off.
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4)
2)
3)
Actually input pulse
Count value stored into the present
value storing remote registers
Count operation stop
9 - 5
MELSEC-A
6)
5)
7)
Count operation stop
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