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59 Automation PC 820 User's Manual V 1.20
2.6.8 POWERLINK
Status / Error LED
The status/error LED is a green/red LED.
POWERLINK 1 connection
Cabling S/STP (Cat5e)
Cable length max. 100 m (min. Cat5e)
Speed LED On Off
Green / red see Status / Error LED
Link LED On Blinking
Yellow Link
(POWERLINK
network
connection
available)
Activity (blinking)
(Data transfer in
progress)
Table 34: POWERLINK connection
Red - error Description
On The POWERLINK interface has encountered an error (failed Ethernet frames, increased number of
collisions on the network, etc.).
Table 35: Status / Error LED as error LED - POWERLINK operating mode
Green - status Description
Off
NOT_ACTIVE Managing Node (MN)
The bus is monitored for POWERLINK frames. If a frame is not received within the configured time
window (timeout), the interface goes directly into PRE_OPERATIONAL_1 status (single flash).
If, however, POWERLINK communication is detected before this time passes, the interface goes
directly into the BASIC_ETHERNET status (flickering).
Controlled Node (CN)
The bus is monitored for POWERLINK frames. If a frame is not received within the configured time
window (timeout), the interface goes directly into BASIC_ETHERNET status (flickering).
If, however, POWERLINK communication is detected during this time, the interface goes directly into
the PRE_OPERATIONAL_1 status (single flash).
Green flickering (approx. 10 Hz)
BASIC_ETHERNET The interface is in BASIC_ETHERNET status, and is operated purely as an Ethernet TCP/IP interface.
Managing Node (MN)
This status can only be changed by resetting the interface.
Controlled Node (CN)
If POWERLINK communication is detected while in this status, the interface goes into the
PRE_OPERATIONAL_1 state (single flash).
Single flash (approx. 1 Hz)
PRE_OPERATIONAL_1 The interface status is PRE_OPERATIONAL_1.
Managing Node (MN)
The MN starts the operation of the "reduced cycle". Collisions are allowed on the bus. There is not yet
any cyclic communication.
Controlled Node (CN)
The CN waits until it receives an SoC frame and then switches to PRE_OPERATIONAL_2 status
(double flash).
Table 36: Status/Error LED as status LED - POWERLINK operating mode
POWERLINK