S5-115U Manual
Analog Value Processing
Figure 10-26.
Block Diagram with Signal Interchange between
CPU and a 470 Analog Output Module
A7
I
A7
U
A0
U
A0
I
Data
V/I converter
8×
8×
Galvanic isolation
MUX
Multiplexer
D/A
Digital-analog converter
CPU
Address decoder
Processor
Clock pulse
Circulating buffer
Counter
Optocoupler
D
A
MUX
Sample and Hold
U
Sample and Hold
U
Digital-analog converter
Multiplexer
L+
L –
Process signal
output
Switched-
mode
regulator
S5 bus
Data bus
Address bus
Control signal
+24 V
+16 V
+5.6 V
-7.2 V
Control signals
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Summary of Contents for SIMATIC S5-115U
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