HEIDENHAIN TNC 306 Service Manual User Manual
Page 23
SERVICE MANUAL TNC 306/360
Page 19
HEIDENHAIN Service
X25 Data Interface V.24/RS-232
Flange socket with female insert (25-pin)
Flange socket with male insert (25-pin)
Pin No.
Assignment
Pin No.
Assignment
1
shield
1, 2, 3
0 V * 1
2
RxD
4, 5, 6, 17, 18
not assigned
3
TxD
7
-RESET
4
CTS
8
-WRITE EXTERN
5
RTS
9
WRITE EXTERN
6
DTR
10
-A5
7
GND (0 V * 2)
11
-A3
8 bis 19
not assigned
12
-A1
20
DSR
13
shield
21 bis 25
not assigned
14, 15, 16
+ 12 V * 1
housing
external shield
19
serial IN 1
20
EMERGENCY STOP
21
-serial OUT
22
serial OUT
23
-A4
24
-A2
25
-A0
X27 Machine Operating Panel
Flange socket with female insert (37-pin)
Pin No.
Assignment
Pin No.
Assignment
1
I128
19
I146
2
I129
20
I147
3
I130
21
I148
4
I131
22
I149
5
I132
23
I150
6
I133
24
I151
7
I134
25
do not assign
8
I135
26
O01)
9
I136
27
O11)
10
I137
28
O21)
11
I138
29
O31)
12
I139
30
O41)
13
I140
31
O51)
14
I141
32
O61)
15
I142
33
O71)
16
I143
34
0 V (PLC) 2)
17
I144
35
0 V (PLC) 2)
18
I145
36
+ 24 V_A PLC 3)
37
+ 24 V_A PLC 3)
1) O0...O7 simultaneously to X21 (PLC output)
2) 0V PLC reference potential for testing
3) PLC voltage supply + 24V_A routed via fuse for
the inputs (can be switched off)