K8000 Input problem

Kits PC Related Projects
1

I have build the K8000 interface card.

When I use the test program I can use all the digital outputs of the interface card without a problem. But I can’t use the inputs, not with test program and also not with some VB code.

-> I checked the position of each IC.
-> I put the 4N33 at the right place’s
-> When I connected some input on the channel the led lights
-> I use the latest dll (from vel255.diinoweb.com/files/)
-> I’m using windows XP service pack 3

-> I use the folowing vb code to test :

Form_load :

SelectI2CprinterPort(1)
Start_K8000()
ConfigAllIOasInput()

And in a timer function :

Label1.Text = ReadIOchannel(16)
        Label2.Text = ReadIOchannel(15)
        Label3.Text = ReadIOchannel(14)
        Label4.Text = ReadIOchannel(13)
        Label5.Text = ReadIOchannel(12)
        Label6.Text = ReadIOchannel(11)
        Label7.Text = ReadIOchannel(10)
        Label8.Text = ReadIOchannel(9)
        Label9.Text = ReadIOchannel(8)
        Label10.Text = ReadIOchannel(7)
        Label11.Text = ReadIOchannel(6)
        Label12.Text = ReadIOchannel(5)
        Label13.Text = ReadIOchannel(4)
        Label14.Text = ReadIOchannel(3)
        Label15.Text = ReadIOchannel(2)
        Label16.Text = ReadIOchannel(1)

What am I doing wrong ? Could you please help me?

2

Probably, you’ve inverted IC22

3

No IC22 is placed correctly (in the same direction of IC23 and the opposite direction of IC24)
and the three LED’s for the activity on the lines blinks.