202
ifm
System Manual
ecomat
mobile
SmartController (CR2500) V05
More functions in the ecomatmobile controller
Counter functions for frequency and period measurement
10.1.3
Function FREQUENCY
Contained in the library:
ifm_CRnnnn_Vxxyyzz.LIB
Available for the following devices:
•
CabinetController: CR0301, CR0302, CR0303
•
ClassicController: CR0020, CR0032, CR0505
•
ExtendedController: CR0200, CR0232
•
PCB controller: CS0015
•
SafetyController: CR7020, CR7021, CR7032, CR7200, CR7201, CR7232, CR7505, CR7506
(For safety signals use function SAFE_FREQUENCY_OK together with function PERIOD,
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page
•
SmartController:
CR2500
•
PDM360 smart: CR1071
Function symbol:
FREQUENCY
INIT
F
CHANNEL
TIMEBASE
Description
FREQUENCY measures the signal frequency at the indicated channel. Maximum input frequency
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data sheet.
This function measures the frequency of the signal at the selected CHANNEL. To do so, the positive
edge is evaluated. Depending on the TIMEBASE, frequency measurements can be carried out in a
wide value range. High frequencies require a short time base, low frequencies a correspondingly
longer time base. The frequency is provided directly in [Hz].
NOTE
For the function FREQUENCY only the inputs FRQ0...FRQ3 can be used.