Activating analog input VM110n

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1

Dear Reader

The card is working well. Now i like to use the two analog inputs.

After connecting 5 V to the input and with the following lines:

Timer1.Enabled = False

ReadAllAnalog(Data1, Data2)
txtData1.Text = CStr(Data1)
txtData2.Text = CStr(Data2)

Timer1.Enabled = True

I get 123 on both, not depending on the connection of the input. Should I activate Sk2 and Sk3? and how can I do that?

thanks in advance Gerard

2

It seems the analog inputs are now in ‘test’ mode.
To get them working normally, please remove jumper caps from SK2 and SK3 and adjust trimmer potentiometers ATT1 and ATT2 to max. position clockwise.

For more info please see the chapter “18. GAIN FACTOR” in the K8055N manual:
http://www.velleman.eu/downloads/0/illustrated/illustrated_assembly_manual_k8055n-uk.pdf