Using The Periodic Pulse Counter Function - Mitsubishi Electric MELSECQ Series User Manual

5
FUNCTIONS
5.5
5
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Using the Periodic Pulse Counter Function

This function allows the present value A (Un\G10 and 11)/present value B (Un\G200 and
201) and the previous value to be stored in the present periodic pulse count value
(Un\G16 and 17) and previous periodic pulse count value (Un\G14 and 15) respectively at
intervals of the preset period time (Un\G9), while the periodic pulse counter start command
(Y05) is ON.
(1) Periodic pulse counter operation
The following explains the relation between respective I/O signals and buffer memory
areas used in the periodic pulse counter function.
The previous periodic pulse count value (Un\G14 and 15) is compared with the
judgment value for updated periodic pulse count value (Un\G18 and 19), and if these
stored values are equal, the present value is stored in the present periodic pulse
count value (Un\G16 and 17).
Figure 5.12 contains the I/O numbers (X/Y) and buffer memory addresses of channel
1 only. For channels 2 to 6, refer to Section 3.3.1 and Section 3.4.1.
For the period setting (Un\G9), refer to Section 3.4.2 (4).
5.5 Using the Periodic Pulse Counter Function
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