Siemens Simatic S7-1500 Manual - Page 27

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Siemens Simatic S7-1500 Manual
Diagnostics alarms
5.1 Status and error displays
Meaning of the LED displays
The tables below explain the meaning of the status and error displays.
LED RUN/ERROR
Table 5- 1
RUN/ERROR status and error displays
LED
RUN
ERROR
Off
Off
Flashes
Off
On
Off
Flashes
Flashes
26
Meaning
Voltage missing or too low at backplane
bus.
Module is starting up.
Module is ready.
Hardware defective.
•
Switch on the CPU and/or the system power
supply modules.
•
Verify that the U connectors are inserted.
•
Check whether too many modules are inserted.
---
Replace the module.
Digital output module DQ 64x24VDC/0.3A BA (6ES7522-1BP00-0AA0)
Equipment Manual, 07/2020, A5E48024569-AA
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