Delta AS Series Programming Manual page 800

9. Avg is the average times and in the moving average of the measurement result, ranging from 1 to 10.
10. Freq is the measurement result of the average frequency; unit: Hz. The format is as below.
11. RPM is the measurement result of the average revolution; unit: rev/min. The format is as below.
Revolution (rev/min) =
12. If you stopped executing the instruction, its measuring function will stop. The values in Freq and RPM will not be
updated.
13. Note that if you clear or change the counter value, the sampling measurement result of Freq and RPM in the cycle
will be affected.
14. Refer to the following table for more details when any of the Error flag is ON.
ErrCode
16#1400 This function is NOT available for this module.
16#1401 The value is invalid or out of range.
16#1402 No response from the module. Communication timeout.
16#1403 HWCONFIG configuration error. Instruction stops.
16#1404 There is no such counting channel for the HC module.
16#1405 Input interface not selected. Instruction stops.
16#140D Invalid value in Smpl
16#140E Invalid value in Avg
16#140F Invalid value in Cnt/Rev
One of the counting channel of the HC module is executing frequency measuring. Other
16#1415
channels cannot perform the same task at the same time.
CurCnt ( t + ���������������� ) − CurCnt ( t )
Freqency (Hz) =
���������������� ( ms ) × 10
( CurCnt ( t + ���������������� ) − CurCnt ( t ) ) × 60
������������ / ������������ × ���������������� ( ms ) × 10
Cha p ter 6 App l ied Ins truc tio ns
−3
−3
Description
6_
6-521