Connecting The Digital Input/Output Module - Siemens S5-100U User Manual

Installation Guidelines
3.2.4

Connecting the Digital Input/Output Module

Use only slots 0 through 7 when you plug the module into the bus unit. Use a 40-pin cable
connector with a screw-type connection or crimp snap-in connection for wiring. The module does
not have a two-wire connection. You must therefore use an external distribution block.
Every channel is assigned a terminal on the 40-pin connector. The channel numbers are printed on
the front plate.
The 16 channels on the input side (IN) are numbered from n.0 through n.7 and from n+1.0 through
n+1.7. The 16 channels on the output side (OUT) are numbered from n.0 through n.7 and from
n+1.0 through n+1.7. "n" is the start address of the slot. Slot 0, for example, has the start
address of n=64 (see chapter 6).
Figure 3-16. Front View of the Digital I/O Module with a Crimp Snap-In Connector
(simplified view and not true to scale)
3-18
OUT
L +
1
n+1
.0
2
.1
3
.2
4
.3 5
0,1 A
.4
6
.5
7
.6
8
.7
9
M 10
L +
11
n
.0
12
.1
13
.2
14
.3 15
0,5 A
.4
16
.5
17
.6
18
.7
19
M
20
40-pin crimp
snap-in connector
IN
b
L+
1
n+1
.0
2
.1
3
.2
4
.3
5
.4
6
.5
7
.6
8
.7
9
NC
10
NC
11
n
.0
12
.1
13
.2
14
.3
15
.4
16
.5
17
.6
18
.7
19
M
20
S5-100U
EWA 4NEB 812 6120-02