Siemens SIMATIC ET 200eco PN M12-L Equipment Manual page 74

P1 LK and P2 LK LEDs
Table 7- 4
P1 LK
CM 8x IO-Link + DIQ 8x24VDC M12-L 8xM12 (6ES7148-6JJ00-0BB0) communications module
Equipment Manual, 12/2022, A5E51718265-AB
Error display of the P1 LK and P2 LK LEDs
LEDs
P2 LK
There is no Ethernet connection between
the communications interface of your
Off
IO device and a communication partner
(e.g. server).
There is an Ethernet connection between
the communications interface of your
On
IO device and a communication partner
(e.g. server).
The "Node flash test" is running (the
RN/NS, ER/MS and MT/IO LEDs also flash).
Flashing
Meaning
7.2 Diagnostics
Solution
Check whether the bus cable to the
switch/communication partner is inter-
rupted.
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Modbus TCP
73