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Interrupts, error messages, diagnostics and system
alarms
The LED displays of the CPU 1515‑2 PN are described below.
You will find additional information on "Interrupts" in the STEP 7 online help.
You can find additional information on the topics of "Diagnostics" and "System alarms" in the
Diagnostics (http://support.automation.siemens.com/WW/view/en/59192926) function
manual.
5.1
Status and error display of the CPU
LED display
The figure below shows the CPU 1515‑2 PN LEDs.
①
②
③
④
⑤
⑥
⑦
Figure 5-1 LED displays of the CPU 1515‑2 PN (without front panel and display)
34
RUN/STOP LED (green/yellow LED)
ERROR LED (red LED)
MAINT LED (yellow LED)
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)
STOP-ACTIVE LED
CPU 1515-2 PN (6ES7515-2AN03-0AB0)
Equipment Manual, 11/2022, A5E46416198-AC
5
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