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MELSEC-Q
5 DETAILS AND SETTING OF FUNCTIONS
5.2 Count Type Selection
Select the linear counter or ring counter by setting with the intelligent function module
switch.
Refer to Section 4.5 for details of the setting method.
5.2.1 Linear counter operation
When the linear counter is selected, count operation is performed between 0 and
99999999.
If the "accumulating count value" of the buffer memory exceeds 99999999, the
"overflow detection flag" of the buffer memory turns ON and an overflow error (error
code: 100) occurs.
The linear counter can be used with the comparison output function (refer to Section
5.4), pre-scale function (refer to Section 5.6), movement averaging function (refer to
Section 5.7) and alarm output function (refer to Section 5.8).
Counter reset
request
Overflow
detection flag
Accumulating count value*
99999999
Executed by QD60P8-G
0 Time
OFF
OFF
OFF
The accumulating count value is updated in the cycle set in the "count cycle setting value"
of the buffer memory. (Refer to Section 5.1.4)
ON
ON
ON
Count enable
(Y18 to Y1F)
*:
Executed by sequence program
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