Siemens SIMATIC PN/CAN LINK

Diagnostics
11.1 Status LEDs
SIMATIC PN/CAN LINK
140 Operating Instructions, 03/2022, A5E39895388-AC
RUN
LED
ERROR
LED
MAINT
LED
1)
Operating
state
Description
Flashes
Off Off
Firmware update
• While the firmware is written to the
flash memory.
Flashes Flashes
Off
LEDs are flashing
(triggered by TIA
Portal)
• 3-second intervals
1) The MAINT LED currently has no meaning.
x: LED state is irrelevant
During boot-up of the PN/CAN LINK and after connecting the power supply, the sequence is
as follows:
1. The three LEDs light up briefly for about 1 second and then go dark again.
2. None of the LEDs light up for about 4 seconds.
3. The RUN LED starts flashing.
4. When the boot-up of the PN/CAN LINK is complete and the connection to the S7 controller is
established, the RUN LED lights up.
Ethernet interface
LINK
Indicates whether there is a physical connection on the Ethernet level.
On
Connection exists
Off
No connection exists
Rx/Tx
Indicates whether a package is being sent or received
On
PN/CAN LINK sends or receives a package
Off
No package is sent or received