HEIDENHAIN TNC 122 Technical Manual - Manual (Page 12)

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TNC 122 8 Pin Layout 11
8 Pin Layout
X1, X2, X3 Pin number Assignment
Encoder input 1 I
1
+
2 I
1
–
Flange socket with 5 I
2
+
9-pin female insert 6 I
2
–
7 I
0
+
8 I
0
–
3 + 5 V
4 0 V
9 Internal shield
Housing External shield
X21 Data interface Pin number Assignment
RS-232-C/V.24 1 Housing
2 RXD
D-sub connector with 3 TXD
25-pin female insert 4 CTS
5 RTS
6 DTR
7 GND signal ground
8 – 19 Do not use
20 DSR
21 – 25 Do not use
X51 Power connector Pin number Assignment
L1 Live (230 V, F2.5 A fuse)
Terminal board, 3-pole N Neutral
Protective ground
Power consumption: typically 10 W