Hi,
I am sort of newbie here..
Maybe someone could help me with my small project..
I have 8 bit input card ( and of course S7-317 cpu etc.)
Also i have storm interface 12-key keypad with 8 pins.
http://www.storm-interface.com/product_attachments/PLXSeries.pdf
I thought i could connect that keypad easily to my 8 bit input card, to activate each bit at each key press, but keypad contact matrix is making me dizy.. =)
Contact matrix is: key_number=pin+pin
1=1+3, 2=1+4, 3=1+5, 4=2+3, 5=2+4, 6=2+5, 7=8+3, 8=8+4, 9=8+5,
0=7+4, *=7+1, #=7+6
How an earth I can connect those contacts to 8 bit inputs to get something out from keypad..?
I am sort of newbie here..
Maybe someone could help me with my small project..
I have 8 bit input card ( and of course S7-317 cpu etc.)
Also i have storm interface 12-key keypad with 8 pins.
http://www.storm-interface.com/product_attachments/PLXSeries.pdf
I thought i could connect that keypad easily to my 8 bit input card, to activate each bit at each key press, but keypad contact matrix is making me dizy.. =)
Contact matrix is: key_number=pin+pin
1=1+3, 2=1+4, 3=1+5, 4=2+3, 5=2+4, 6=2+5, 7=8+3, 8=8+4, 9=8+5,
0=7+4, *=7+1, #=7+6
How an earth I can connect those contacts to 8 bit inputs to get something out from keypad..?