Eaton ELC-PB, Programming Manual

Page: 369 / 728

E L C P r o g r a m m i n g M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003003E
3-200
0 1
2 3 4 5 6 7 8 9
D0
10
3
10
2
10
1
10
0
number key
BCD value one digit number BCD code
BIN value
overflow
BCD value
2. The chart below has four keys connected to X35, X33, X30 and X31 of a number keyboard.
After pressing the four keys in the following order,
1234
, the number 5,301 will be entered
into D0, one digit at a time. The maximum number which can be entered in D0 is 9,999 i.e. 4
digits. If the entered number exceeds the allowable range, the highest digits will overflow.
3. After X35 is pressed, M15=ON until another key is pressed. The process is the same as other
keys are pressed.
4. As each key is pressed, the associated M-bit will be turned ON.
5. M20 = ON when any of the keys is pressed.
6. When X20 is OFF, the value in D0 remains unchanged but all the M-bits will be turned OFF.
X30
X31
X33
X35 1
2
3
4
1
2
3 4
M10
M11
M13
M15
M20
Key output
signal