Siemens SIMATIC ET 200S - Block Diagram of the 2 DI 24 VDC Standard

Digital Electronic Modules
11-9
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Table 11-4 Terminal assignment of the 2DI 24 VDC Standard
View RemarksTerminal assignment
MM
VDCVDC
2
3
4
6
7
8
1
5
2-wire 3-wire
TM-E15S26-A1 and 2DI 24 VDC Standard
CH1CH0
DI
1
DI
0
AUX1
A
4
A
3
A
8
A
7
AUX1
AUX1
AUX1
n. c.n. c.
4-wire
AUX1 must be occupied
with 4 wires at PE.
Channel 0:
Terminals 1 to A3
Channel 1:
Terminals 5 to A7
DI: Input signal
24 VDC:
Sensor supply
M : Chassis ground
Terminals 4 and 8 can be
used for connection of
cables that are not required
up to 30 VDC.
Block diagram
Backplane bus
ET 200S
backplane
bus
circuit
L+
1M
P1
Input
electronics
Input
electronics
1
5
3
7
2
6
P2
Figure 11-3 Block diagram of the 2DI 24 VDC Standard