LED Descriptions
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PC Cards cifX PCI, PCIe, Low Profile PCIe | Installation, Operation and Hardware Description
DOC120204UM46EN | Revision 46 | English | 2015-12 | Relelased | Public
© Hilscher, 2008-2015
8.5 EtherCAT
Slave
For the EtherCAT Slave protocol, the communication LEDs
RUN
and
ERR
as well as the Ethernet-LED
L/A IN
or
L/A OUT
can assume the states
described below. This description is valid from stack version V2.5 (V2).
LED
Color
State
Meaning
Duo LED red/green
(off)
Off
INIT
: The device is in state INIT.
(green)
Blinking
(2,5 Hz)
PRE-OPERATIONAL
: The device is in PRE-OPERATIONAL state.
(green)
Single flash
SAFE-OPERATIONAL
: The device is in SAFE-OPERATIONAL state.
RUN
General
name:
COM 0
(green)
On
OPERATIONAL
: The device is in OPERATIONAL state.
Duo-LED red/green
(off)
Off
No error:
The EtherCAT communication of the device is in working
condition.
(red)
Blinking
(2,5 Hz)
Invalid configuration:
General Configuration Error
Possible reason: State change commanded by master is impossible
due to register or object settings.
(red)
Single Flash
Local error:
Slave device application has changed the EtherCAT state
autonomously.
Possible reason 1: A host watchdog timeout has occurred.
Possible reason 2: Synchronization Error, device enters Safe-
Operational automatically.
ERR
General
name:
COM 1
(red)
Double
Flash
Application watchdog timeout:
An application watchdog timeout has
occurred.
Possible reason: Sync Manager Watchdog timeout.
LED green
(green)
On
Link:
The device is linked to the Ethernet, but does not send/receive
Ethernet frames.
(green)
Flickering
(load
dependant)
Activity:
The device is linked to the Ethernet and sends/receives
Ethernet frames.
(off)
Off
The device has no link to the Ethernet.
LED yellow
L/A IN
or
L/A OUT
(off)
Off
This LED is not used.
Table 40: LED states for the EtherCAT Slave protocol
LED State
Beschreibung
On
The indicator is constantly on.
Off
The indicator is constantly off.
Blinking
(2,5 Hz)
The indicator turns on and off with a frequency of 2,5 Hz:
“on” for 200 ms, followed by “off” for 200 ms.
Single flash
The indicator shows one short flash (200 ms) followed by a long “off“ phase (1,000 ms).
Double flash
The indicator shows a sequence of two short flashes (each 200 ms), separated by a short off
phase (200 ms). The sequence is finished by a long off phase (1,000 ms).
Flickering (load
dependant)
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 41: LED state definitions for the EtherCAT Slave protocol
