shady_yehia
Member
Hello guys.. I need a little help down here..
I've just taken your advise guys about moving to Automation Direct (koyo) PLC. I bought a DL06 and equiped it with an ethernet module (H0-ECOM) and a 4-in/2-out voltage analog module (F0-4AD2DA-2), what a great thing i've done, isn't it?
i'm using 4 potentiometers to simulate analog signals 0-10 volts as an input to the analog module.
The four potentiometers are supposed to be changing the analog signal from 0 to 10 volts (LINEARLY). the problem is simply that, once I connect the the signals to the analog module, the signal turns to be extramly NON-LINEAR even when the PLC power is off.
i mean with nonlinear that the voltage remains under 1 volt nearly half the scale of the potentiometer, and then starts to rise very fast and reaches 10 volts at the end. But once i disconnect the terminal block from the module and measure again, the signal is back to normal.
Any body knows what is this thing.
Thanks in advance..
I've just taken your advise guys about moving to Automation Direct (koyo) PLC. I bought a DL06 and equiped it with an ethernet module (H0-ECOM) and a 4-in/2-out voltage analog module (F0-4AD2DA-2), what a great thing i've done, isn't it?
i'm using 4 potentiometers to simulate analog signals 0-10 volts as an input to the analog module.
The four potentiometers are supposed to be changing the analog signal from 0 to 10 volts (LINEARLY). the problem is simply that, once I connect the the signals to the analog module, the signal turns to be extramly NON-LINEAR even when the PLC power is off.
i mean with nonlinear that the voltage remains under 1 volt nearly half the scale of the potentiometer, and then starts to rise very fast and reaches 10 volts at the end. But once i disconnect the terminal block from the module and measure again, the signal is back to normal.
Any body knows what is this thing.
Thanks in advance..