3 key matrix of the keyboard unit – HEIDENHAIN TNC 415 (259 9x0) Service Manual User Manual
Page 70
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SERVICE MANUAL TNC 415B/425
Page 65
Issue: 20.08.95
11.2.3
Key Matrix of the Keyboard Unit
X2 Pin
1
2
3
4
5
6
7
8
9
17
18
19
28
29
31
32
20
21
22
23
24
25
26
27
Key
RL0
1
2
3
4
5
6
7
8
16
17
18
19
20
21
22
SL0
1
2
3
4
5
6
7
!
X
X
X
X
S
X
X
0
/
0
X
X
X
X
&
X
X
*
X
X
(
X
X
)
X
X
X
X
X
X
X
X
X
X
X
"
X
X
Q
X
X
W
X
X
E
X
X
R
X
X
T
X
X
Y
X
X
U
X
X
X
X
O
X
X
P
X
X
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