IDEC MICROSmart FC6A Series Ladder Programming Manual page 572

27: F C
LOW ALCULATION
■ Settings tab
(1)
(2)
(3)
(4)
(5)
(1) Data Type
Select the flow counter data type as "Word (W)" or "Double (D)". The initial value is "Double (D)".
Word (W):
Double (D):
(2) Counter Type
Select the operation type for the flow counter that samples the pulses as "Free Run" or "Difference".
Free Run:
Difference:
(3) Flow Rate Unit
Select the time unit for flow rate that will be stored in the flow rate (D1+0, D1+1) from the following.
"Second", "Minute", "Hour", "Days"
(4) K factor
Specify the constant that indicates the number of pulses per unit quantity that is output by the flow meter.
The unit differs according to the flow meter (liter, gallon, etc.), and this unit does not affect the operation of the FLWP
instruction.
For example, if the flow meter outputs 10 pulses for a flow of 1 liter, the K factor is specified as 10 [pulses/liter].
The setting range is 0 and 1.175494E-38 to 3.402823E+38.
(5) Max Quantity of Log Data
Species the maximum amount of logged data that can be recorded.
The number of data registers that are used for the logged data (D2) changes according to the maximum amount of logged
data.
The number of data registers used for logged data (D2) is 2+6×the maximum amount of logged data.
The range is 1 to 35.
27-26
I
NSTRUCTIONS
S1+0 is handled as the flow counter.
S1+0 and S1+1 are handled as the flow counter.
An addition-only free run operation is performed without initializing the flow counter. The free run
operation resets the count to 0 and continues counting when the count exceeds the upper limit of the
data type (65,535 (W), 4,294,967,295 (D)).
The number of pulse count for each scan is stored in the flow counter.
For example, use this option when you will count pulses with two different types of counters, calculate
that difference in the ladder, and directly store that to the flow counter.
FC6A S MICROS
ERIES MART
L P M
ADDER ROGRAMMING ANUAL
FC9Y-B1726