Siemens SIMATIC S7-1500 Manual page 27

RUN and ERROR LED
Table 5-1 Status and error displays RUN and ERROR
RUN
Off
Flashes
On
On
Flashes
LED PWR
Table 5-2 POWER status display
LED P
Cn LEDs
Valid for IO-Link port in port status.
Table 5-3 Status displays of LEDs C1 to C8
Communication module IO-Link Master CM 8xIO-Link (6ES7547-1JF00-0AB0)
Equipment Manual, 08/2022, A5E45488510-AB
LED
ERROR
Voltage missing or too low at backplane
Off
bus.
The module starts up and flashes until
Off
the valid parameter assignment is set.
Module parameters are assigned.
Off
Indicates module errors (at least one
error is present on one channel, e.g.
Flashes
wire break).
The hardware is defective.
Flashes
Supply voltage L+ too low or missing.
Off
Supply voltage L+ is present and OK.
On (green)
C1 to C8
Off
Flashes (green)
On (green)
On (red)
Meaning
Meaning
Meaning
The port is disabled or in standard DI mode.
The port is in IO-Link mode, the device is not connected or
the port is not connected with the configured device.
Port in IO-Link mode, device not connected
• Wire break or short-circuit to ground
• Supply voltage L+ missing or too low
• IO-Link device error
Diagnostic alarms
5.1 Status and error displays
Solution
• 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.
-
Evaluate the diagnostics and eliminate
the error (e.g. wire break).
Replace the module.
Solution
Check the supply voltage L+.
-
27