Pleora Technologies iPORT CL-Ten, Руководство пользователя, Страница: 62 / 72

58 iPORT Advanced Features User Guide
Using the Delayer Feature to Delay a Signal
The following procedure demonstrates how you can configure the delayer feature to delay a signal for
three seconds. The delayer feature operates by sampling the signal and then delaying it by a number of
configured sampling intervals. In the following example, Timer0 is used to set the sampling frequency of
approximately 16Hz, or 16 sampling intervals per second. To delay the signal by 3 seconds, 48 sampling
intervals are required (3 x 16).
To configure the delayer to delay a signal
1.
Follow steps 1-5 in the procedure, “To control the PLC remotely” on page 56.
2.
In the Timer section, select Timer0 from the TimerSelector list.
3.
Select TimerDurationRaw and enter 65535 to configure the duration of the sampling interval (the
length of time that the signal state is high).
4.
Select TimerDelayRaw and enter 65535 to configure the length of time that the signal is delayed
before the pulse can start (the length of time that the signal stat is low).
5.
Select TimerTriggerSource and select Continuous to allow the timer to automatically trigger (no
source required).
6.
In the TimerGranularityFactor list, select Granularity480ns to configure the interval of the timer's
internal clock tick.
7.
In the SignalRouting section, select one of the available equations, for example, PlcEquation0 , and
enter the following Boolean equation: GpioOut0 = Delayer0Out.
8.
In the SignalRouting section, select another of the available equations, for example, PlcEquation1 ,
and enter the following Boolean equation: Delayer0In = PlcCtrl0 .
9.
Click PlcEquationApply to apply the equations.
10.
In the Delayer section, select PlcDelayerDelayCount and enter 48 .
11.
In the PlcDelayerReferenceTimingSignal list, select Timer0Out .
12.
In the ControlBits section of the Plc category, select one of the inputs from the PlcCtrlSelector list,
for example, PlcCtrl0 .
13.
In the PlcCtrlValue list, click True to set the signal state to high, or False to set the signal state to
low.
When PlcCtrl0 is set to True , the output value becomes high after a three second delay. When it is
set False, the output value becomes low after three seconds. The output will always track the inputs
on
PlcCtrl0 .