Siemens SIMATIC ET 200S - Block Diagram of the 4 D NAMUR

Digital Electronic Modules
11-36
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Terminal Assignment of a Changeover Contact without Load Resistance
(Mechanical Changeover Contact)
Table 11-15 Terminal Assignment of a Changeover Contact without Load Resistance (Mechanical
Changeover Contact)
View
Terminal assignment Remarks
1
3
5
Example for connection of
channel 0 and channel 1
TM-E-15S26-A1 and 4DI NAMUR
2
3
4
6
7
8
1
5
CH1
CH0
DI
1
DI
0
DI
2
DI
3
8
7
44
3
A
AA
A
AUX1 AUX1
AUX1
AUX1
CH2 CH3
V
s
V
s
V
s
V
s
Changeover contact 1:
Terminals 1, 5 and 3
Changeover contact 2:
Terminals 2, 6 and 7
DI: Input signal
Vs: Encoder supply
Block diagram
Backplane bus
P1 / P2
5V
8.2 V
µC
Multiplexer,
comparator
V
s
ET 200S
backplane bus
interface connection
Inputs
Input wiring
1
2
3
4
5
6
7
8
Figure 11-9 Block diagram of the 4D NAMUR