Ethernet I/O Modules
Frequency Measurement by DI
Enable
Frequency Measurement
This parameter is used to enable the frequency measurement function on
each DI channels.
Scan Mode
This parameter is used to define the scan mode for the frequency
measurement.
1000 ms:
This mode provides a normal update rate and normal accuracy.
The acceptable frequency range for the input signal is 1 Hz to 3.5 kHz (
±
1 Hz
error).
This mode can be used when the pulse width (signal source) contains small
errors, since the measurement is based on the pulse count.
100 ms:
This mode provides fast update rate, but the accuracyis low.
The acceptable frequency range for the input signal is 100 Hz to 3.5 kHz (
±
10
Hz error).
This mode can be used when the pulse width (signal source) contains small
errors, since the measurement is based on the pulse count.
Single-pulse:
This mode provides the highest accuracy but can only be used for
stable signal.
The data update rate depends on the signal frequency and the acceptable
signal frequency range for the input signal is 0.01 Hz to 3.5 kHz (
±
0.01 Hz
error).
This mode can only be used when the pulse width (signal source) is stable,
since the measurement is based on the width of a single pulse.
Moving Average
1 ==> No Average is used
2 ==> Uses the average of 2 continuous sample values
4 ==> Uses the average of 4 continuous sample values
8 ==> Uses the average of 8 continuous sample values
Digital Input
Enable Latched DI
This parameter is uses to enable the latch function on all DI channels. The
status of the DI will be recorded if it has been flagged as either high or low.
0 = Disable All; 1 = Enable All
Clear Latched Status (High)
This parameter is used to clear the status of all high latched counters.
0 = No Operation; 1 = Clear All
Clear Latched Status (Low)
This parameter is used to clear the status of all low latched counters.
0 = No Operation; 1= Clear All = 1
DI Filter interval time (ms)
The DI filter is a function that eliminates high-frequency noise from inputs.
0 = Disable. Refer to “Appendix: FAQ F” for more detailed information.
Update Settings
Click this button to save the revised settings of DI/DO configuration to the
PETL/tET/tPET device.
ICP DAS CO., LTD.
PETL/tET/tPET DIO Series User Manual, Ver. 2.1, Sep. 2014, Page: 55
ГК
Атлант
Инжиниринг
–
официальный
представитель
в
РФ
и
СНГ
+7(495)109-02-08 [email protected] www.bbrc.ru
