STOP ACTIVE LED Meaning
LED off
• The CPU is set to "STOP" mode using the display or programming device and not with the
STOP button on the device.
• The CPU is in RUN mode.
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Interrupts, error messages, diagnostics and system alarms
5.1 Status and error display of the CPU
CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC
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