Interrupts, Error Messages, Diagnostics And System Alarms; Status And Error Displays Of The Cpu - Siemens SIMATIC S7-1500 Equipment Manual

Interrupts, error messages, diagnostics and system
alarms
The status and error displays of the CPU 1517T‑3 PN are described below.
You can find additional information on the topic of "Interrupts" in the STEP 7 online help.
You can find additional information on the topic of "Diagnostics" and "System alarms" in the
Diagnostics (https://support.automation.siemens.com/WW/view/en/59192926) function
manual.
5.1

Status and error displays of the CPU

LED display
The figure below shows the LED displays of the CPU 1517T‑3 PN/DP.
①
②
③
④
⑤
⑥
⑦
Figure 5-1 LED display of the CPU 1517T‑3 PN/DP (without front panel)
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RUN/STOP LED (yellow/green LED)
ERROR LED (red LED)
MAINT LED (yellow LED)
No function
LINK RX/TX LED for port X1 P1 (yellow/green LED)
LINK RX/TX LED for port X1 P2 (yellow/green LED)
LINK RX/TX LED for port X2 P1 (yellow/green LED)
CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0)
Equipment Manual, 11/2022, A5E36285525-AD
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