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LEDs
5.4
LEDs of the PROFINET IO Device interface
LED
Color
RUN (System
Duo-LED red/green
Failure)
Position in the device
drawing:
(2)
ERR (Bus Failure)
Duo-LED red/green
Position in the device
drawing:
(1)
LINK
LED green
CH0
(6)
, CH1
(7)
RX/TX
LED yellow
CH0
(8)
, CH1
(9)
(yellow)
LED state
Definition
Flashing
The indicator turns on and off for 3 seconds with a frequency of 1 Hz:
(1 Hz, 3 s)
"on" for 500 ms, followed by "off" for 500 ms.
Flashing
The indicator turns on and off with a frequency of 2 Hz:
(2 Hz)
"on" for 250 ms, followed by "off" for 250 ms.
Flickering (load
The indicator turns on and off with a frequency of approximately 10 Hz to indicate high Ethernet
dependent)
activity: "on" for approximately 50 ms, followed by "off" for 50 ms. The indicator turns on and off in
irregular intervals to indicate low Ethernet activity.
netPI | NOIT-E-NPI3-51-EN-RE
DOC170801UM01EN | Revision 1 | English | 2017-09 | Released | Public
State
Off
(off)
Flashing
(red)
(1 Hz, 3 s)
On
(red)
Off
(off)
Flashing
(red)
(2 Hz)
On
(red)
(green) On
Off
(off)
Flickering (load
dependent)
Off
(off)
Table 8: LED states for the PROFINET IO-Device protocol
Table 9: LED state definitions for the PROFINET IO-Device protocol
Meaning
No error
DCP signal service is initiated via the bus.
Watchdog timeout; channel, generic or extended diagnosis
present; system error
No error
No data exchange
No configuration; or low speed physical link; or no physical link
The device is linked to the Ethernet.
The device has no link to the Ethernet.
The device sends/receives Ethernet frames.
The device does not send/receive Ethernet frames.
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© Hilscher 2017
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