App-11
IM 04L20A01-01E
Appendix
App
Appendix 3 Pulse Measurement Setting Example
(Pulse Sum Value Reset If It Exceeds
a Fixed Value) (/PM1 Option)
This is a description of how to enter settings so that the pulse sum value will reset if it
exceeds a previously set value.
Application
Pulse Sum Value Reset
The pulse sum value resets if it exceeds a previously set value (reset value), and the
original value is carried over after the reset.
Reset Count
Counts the number of times the reset occurs. This value can be used to calculate the
total sum value up to that count. See “Calculating the Total Sum Value” on the next
page.
Equation
Assign computation channels as shown below, then enter equations and constants.
Note
• In a single scan interval, calculation is performed on numbered channels in the order from
smallest to largest. You must arrange channel numbers and uses according to the table
below. For details, see the Note on the next page.
• If the scan interval’s pulse input value is larger than the reset value, computation cannot be
performed.
Channel Equation Uses
31 D6 No. of pulses per scan interval
32 ((34+31).GE.K01)+32 Pulse sum value reset count
33 ((34+31).GE.K01)*((34+31)-K01) No. of pulses exceeding the reset value
34 ((34+31).LT.K01)*(34+31)+33 Pulse sum value
Constants Uses
K01 Reset value (pulse sums exceeding this value are reset)
Channel 32_Reset Count
Equation: ((34+31).GE.K01)+32
Calculates the number of times the pulse sum value was reset.
((34+31).GE.K01) is 1 if the pulse sum value (34+31) is greater than or equal to the
reset value (K01), otherwise it is 0. The value of channel 32 increments by 1 when
the pulse sum value exceeds the reset value.
Channel 33_No. of Pulses Exceeding the Reset Value
Equation: ((34+31).GE.K01)*((34+31)-K01)
If a pulse sum value exceeded the reset value, calculates the number of pulses that
exceeded the reset value.
((34+31).GE.K01) is 1 if the pulse sum value (34+31) is greater than or equal to the
reset value (K01), otherwise it is 0. The number of pulses that exceeded the reset
value is calculated by taking the difference between the sum value and the reset
value and multiplying it by this value.
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