Siemens SIMATIC S7-1500 CPU 1511-1 PN

CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC
34
Interrupts, error messages, diagnostics and system
alarms
5
The status and error displays of the CPU1511-1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 LED display of the CPU.
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① RUN/STOP LED (yellow/green LED)
② ERROR LED (red LED)
③ MAINT LED (yellow LED)
④ LINK RX/TX LED for port X1P1 (yellow/green LED)
⑤ LINK RX/TX LED for port X1P2 (yellow/green LED)
⑥ STOP ACTIVE-LED (yellow LED)
Figure 5-1LED display of the CPU (without front panel)