HEIDENHAIN TNC 335 Technical Manual - Manual (Page 69)

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TNC 360 11 PLC inputs/outputs 3-45
11.4 PLC I/O unit
One PL 400 board with 63 PLC inputs, 31 PLC outputs and the "Control is operational" output can be
connected to the logic unit. The PL 400 can be mounted directly on the logic unit. See Section
"Power supply" for the power connection.
11.4.1 PL 400 connection
Pin connections on the logic unit
X26 PLC I/O board (PL 400)
D-sub connector (24-pin male insert)
Pin Number Assignment
1, 2, 3 0 V
4 Serial IN 2
5, 6, 17, 18 Do not use
7 RESET
8 WRITE EXTERN
9 WRITE EXTERN
10 A5
11 A3
12 A1
13 Screen
14, 15, 16 + 12 V (from PL 400)
19 Serial IN 1
20 EMERGENCY STOP
21 Serial OUT
22 Serial OUT
23 A4
24 A2
25 A0
Housing External shield