Diagnosis with LEDs
28/55
5.5
PROFINET IO-Device
For the
protocol, the communication LEDs
SF
(system
failure) and
BF
(bus failure) as well as the Ethernet LEDs
LINK
and
RX/TX
can assume the states described below. This description is valid from stack
version V3.x (V3).
LED
Color
State
Meaning
SF
(System Failure)
Duo LED red/green
(off)
Off
No error
(red)
Flashing
(1 Hz, 3 s)
signal service is initiated via the bus.
(red)
On
Watchdog timeout; channel, generic or extended diagnosis
present; system error
BF
(Bus Failure)
Duo LED red/green
(off)
Off
No error
(red)
Flashing
(2 Hz)
No data exchange
(red)
On
No configuration;
or low speed physical link; or no physical link
LINK
LED green
(green)
On
The device is linked to the Ethernet.
(off)
Off
The device has no link to the Ethernet.
RX/TX
LED yellow
(yellow)
Flickering
(load
dependent)
The device sends/receives Ethernet frames.
(off)
Off
The device does not send/receive Ethernet frames.
Table 22: LED states for the PROFINET IO-Device protocol
LED state
Definition
Flashing
(1 Hz, 3 s)
The indicator turns on and off for 3 seconds with a frequency of 1 Hz: “on”
for 500 ms, followed by “off” for 500 ms.
Flashing
(2 Hz)
The indicator turns on and off with a frequency of 2 Hz: “on” for 250 ms,
followed by “off” for 250 ms.
Flickering
(load
dependent)
The indicator turns on and off with a frequency of approximately 10 Hz to
indicate high Ethernet 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.
Table 23: LED state definitions for the PROFINET IO-Device protocol
CIFX M223090AE Real-Time Ethernet | Hardware description and installation
DOC190704UM02EN | Revision 2 | English | 2020-06 | Released | Public
© Hilscher 2020
