Count Cycle Change Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

Count cycle change function

This function changes the count cycle for the sampling pulse number and accumulating count value.
Setting 'CH1 Count cycle change function selection' (Un\G141) to Count cycle change function valid (1) sets the refreshing
cycle for the following buffer memory areas to the count cycle set in 'CH1 Count cycle setting value' (Un\G142).
• 'CH1 Sampling pulse number' (Un\G0)
• 'CH1 Accumulating count value' (Un\G2, Un\G3)
Count cycle
The count cycles that can be set with 'CH1 Count cycle setting value' (Un\G142) are shown below.
• 1s (0)
• 100ms (1)
• 200ms (2)
• 500ms (3)
When 'CH1 Count cycle change function selection' (Un\G141) is set to Count cycle change function invalid (0), the cycle
becomes 1s.
When measuring the frequency of the input pulse, setting 'CH1 Count cycle setting value' (Un\G142) to 1s (0)
causes the value of 'CH1 Sampling pulse number' (Un\G0) to become the frequency. This eliminates the need
to use a program to calculate the count value every second.
Setting method
1.
Set "Count cycle change function selection" to "Count cycle change function valid".
[Navigation window]  [Parameter]  [Module Information]  Module model name  [Application setting]  [Count
cycle change function]
2.
Set "Count cycle setting value".
Item
Count cycle setting value
Precautions
Inconsistencies may occur in 'CH1 Accumulating count value' (Un\G2, Un\G3) depending on the timing of reading the
sampling pulse number and the accumulating count value by the count cycle and the program.
Setting details
1s
100ms
200ms
500ms
1 FUNCTIONS
17
1.1 Count Operation
1