Siemens SIMATIC S5-100U System Manual page 52

Installation Guidelines
Connecting Four-Channel Digital Modules
All of these modules are designed for a two-wire connection. You can therefore wire directly to the
sensor or output field device. An external distribution block is not required.
The four channels of a module are numbered from .0 through .3. (Numbers .4 through .7 are only
significant for the ET 100 distributed I/O system.)
minal block.
The terminal assignments and the connection diagram are printed on the front plate of the module.
Connecting Four-Channel Input Modules
Example: Connecting a sensor to channel 2 (address I 3.2) on the input module in slot 3
(see Figure 3-12)
L+
1
F
M
2
3
.0
.4
4
5
.1
.5
6
7
.2
.6
8
9
.3
.7
10
4
DIGITAL INPUT
4 x 24 - 60 V DC
6ES5 430-8MB11
1 2 3 4 5 6
Figure 3-12. Two-Wire Connection of a Sensor to Channel 2
3-14
Each channel has a pair of terminals on the ter-
1 3 5
2 4 6
L+ M Sensor
S5-100U
7 9
10
8
EWA 4NEB 812 6120-02b