Block Diagram Of The 4Ai I 2Wire Standard - Siemens SIMATIC ET 200S Manual

Table 12-40 Terminal assignment of the 4AI I 2WIRE Standard, continued
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M
0+
1
5
CH0
M
0--
2 6
M
2+
3 7
CH2
M
2- -
4 8
A A
AUX1
4 8
A A
AUX1
3 7
Block diagram
ET 200S
backplane bus
interface
connection
L+
P1
P2
1M
Figure 12-11 Block diagram of the 4AI I 2WIRE Standard
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Terminal assignment
TM-E15S26-A1 and 4AI I 2WIRE Standard
M
1+
CH1
mA
M
1--
M
3+
CH3
M
3--
AUX1
AUX1
Electrical
isolation
DC/DC converter
Channel 0: Terminals 1 and 2
Channel 1: Terminals 5 and 6
Channel 2: Terminals 3 and 4
Channel 3: Terminals 7 and 8
M+: Input signal "+"
M--: Input signal "--"
The 2-wire transducers are
powered over the
measurement leads.
ADC
I I I I
M
ANA
Input current
limit
Short-circuit
protection
Analog Electronic Modules
Remarks
1 M +
0
2 M --
0
5 M +
1
6 M --
1
3 M +
2
4 M --
2
7 M +
3
8 M --
3
12-59