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

Digital Electronic Modules
11-21
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Table 11-7 Terminal assignment of the 2DI 24 VDC High Feature, continued
View RemarksTerminal assignment
MM
VDCVDC
2
3
4
6
7
8
1
5
2-wire 3-wire
TM-E15S26-A1 and 2DI 24 VDC High Feature
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
Short-circuit
protection
Polarity reversal
protection
1
5
3
7
2
6
P2
Figure 11-6 Block diagram of the 2DI 24 VDC High Feature