Yaskawa MotionWorks IEC Toolboxes - Manual (Page 567)

Yaskawa Toolbox: Function Blocks
MotionWorks IEC61131-3 Toolboxes: 2013-09-13 554
RateCalculator
This function block determines the frequency and number of occurrences of an event, such as determining the
part output rate of a machine. RateCalculator counts the number of times an input 'Sensor' signal produces a
rising edge and determines the frequency of that signal with respect to a chosen time period. It can account for
real-time changes to the time period.
Parameters
* Parameter Data
Type Description
VAR_INPUT Default
B Enable BOOL
The function will continue to execute while
enable is held high.
FALSE
V Sensor BOOL
Periodic signal to be measured. Commonly a "part-complete"
sensor.
V TimePeriod_ms DINT
Sensor is measured with respect to this time window
(milliseconds) to determine the current real-time rate.
VAR_OUTPUT
B Valid BOOL Indicates that the outputs of the function are valid.
B Busy BOOL
Set high upon the rising edge of the 'Execute' or 'Enable' input,
and reset if Done, CommandAborted, or Error is true.
B Error BOOL
Set high if error has occurred during the execution of the function
block. This output is cleared when 'Execute' or 'Enable' goes low.
B ErrorID UINT
If Error is true, this output provides the Error ID. This output is
reset when 'Execute' or 'Enable' goes low.
V CounterValue LREAL
Number of times 'Sensor' has measured a rising edge since the
function block has been enabled.
V CurrentRate LREAL The current frequency of the 'Sensor' input with respect to the