Siemens simatic s7-1500 User Manual page 23

Connection: Grounded thermocouples for internal compensation
The following figure shows an example of the pin assignment for grounded thermocouples
for internal compensation.
①
Wiring of a thermocouple (grounded) for internal compensa-
tion
②
Analog-to-Digital Converter (ADC)
③
Electrical isolation
④
Backplane bus interface
⑤
Supply voltage via power supply element
⑥
Equipotential bonding cable (optional)
Figure 3-5 Block diagram and pin assignment for grounded thermocouples
Analog Input Module AI 8xU/R/RTD/TC HF (6ES7531-7PF00-0AB0)
Manual, 09/2016, A5E36647959-AB
CHx Channel or 9 x channel status
(green/red)
RUN Status display LED (green)
ERROR Error display LED (red)
PWR LED for power supply (green)
Wiring
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