
B–64193EN/01
8. CONNECTION TO FANUC I/O Link
215
The keyboard of this operator’s panel is a matrix composition. When three
or more keys are pushed, the bypass current cause unrelated key to be
available. Measures against the malfunction must be taken in the ladder
program.
One example is shown as follows.
(Elimination rule of malfunction)
When three keyinputs or more is input, all the keyinput since the third is
made invalid.
However, when the number of all keyinput becomes two or less because
keyinput was lost, all keyinputs are made effective.
Com.line1(Xm+4)
Com.line2(Xm+5)
Com.line1(Xm+4)
Com.line2(Xm+5)
Com.line3(Xm+6)
Com.line4(Xm+7)
Com.line5(Xm+8)
Com.line6(Xm+9)
Com.line7(Xm+10)
Com.line8(Xm+11)
Com.line1(Xm+4)
Com.line2(Xm+5)
Com.line3(Xm+6)
Com.line4(Xm+7)
Com.line5(Xm+8)
Com.line6(Xm+9)
Com.line7(Xm+10)
Com.line8(Xm+11)
Com.line3(Xm+6)
Com.line4(Xm+7)
Com.line5(Xm+8)
Com.line6(Xm+9)
Com.line7(Xm+10)
Com.line8(Xm+11)
Dataline(bit7)
Dataline(bit6)
Dataline(bit5)
Dataline(bit4)
Dataline(bit3)
Dataline(bit2)
Dataline(bit1)
Dataline(bit0)
Dataline(bit7)
Dataline(bit6)
Dataline(bit5)
Dataline(bit4)
Dataline(bit3)
Dataline(bit2)
Dataline(bit1)
Dataline(bit0)
Dataline(bit7)
Dataline(bit6)
Dataline(bit5)
Dataline(bit4)
Dataline(bit3)
Dataline(bit2)
Dataline(bit1)
Dataline(bit0)
State (a) State (b) State (c)
Com.line1(Xm+4)
Com.line2(Xm+5)
Com.line1(Xm+4)
Com.line2(Xm+5)
Com.line3(Xm+6)
Com.line4(Xm+7)
Com.line5(Xm+8)
Com.line6(Xm+9)
Com.line7(Xm+10)
Com.line8(Xm+11)
Com.line1(Xm+4)
Com.line2(Xm+5)
Com.line3(Xm+6)
Com.line4(Xm+7)
Com.line5(Xm+8)
Com.line6(Xm+9)
Com.line7(Xm+10)
Com.line8(Xm+11)
Com.line3(Xm+6)
Com.line4(Xm+7)
Com.line5(Xm+8)
Com.line6(Xm+9)
Com.line7(Xm+10)
Com.line8(Xm+11)
Dataline(bit7)
Dataline(bit6)
Dataline(bit5)
Dataline(bit4)
Dataline(bit3)
Dataline(bit2)
Dataline(bit1)
Dataline(bit0)
Dataline(bit7)
Dataline(bit6)
Dataline(bit5)
Dataline(bit4)
Dataline(bit3)
Dataline(bit2)
Dataline(bit1)
Dataline(bit0)
Dataline(bit7)
Dataline(bit6)
Dataline(bit5)
Dataline(bit4)
Dataline(bit3)
Dataline(bit2)
Dataline(bit1)
Dataline(bit0)
State (d) State (e) State (f)
f: Keyswitch OFF (“0”) F: Keyswitch ON (“1”)
8.8.9
Others