Siemens Simatic S7-400

7.7 Pin assignments of the 721 cable
Pin assignments of the 721 cable
Table 7-7 Pin assignments of the 721 cable
34
50
17 1
34 50
171
Connector Bundle ID sheath Identification foil Core color Connector
50-pin Contact 50-pin Contact
20
1
No. 16 Red
white 20
21 brown 21
4 green 4
5 yellow 5
18 gray 18
19 pink 19
2 blue 2
3 red 3
24
2
No. 17 green
white 24
25 brown 25
8 green 8
9 yellow 9
22 gray 22
23 pink 23
6 blue 6
7 red 7
26
3
No. 18 yellow
white 26
27 brown 27
10 green 10
11 yellow 11
42 gray 42
43 pink 43
44 blue 44
45 red 45
28
4
No. 19 brown
white 28
29 brown 29
12 green 12
13 yellow 13
46 gray 46
47 pink 47
30 blue 30
31 red 31
S5 interface IM 463-2
7.7 Pin assignments of the 721 cable
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 357