Siemens SIMATIC Equipment Manual page 26

P1 LK and P2 LK LEDs
Table 5- 2
P1 LK
Channel status/channel error LED
Table 5- 3
Channel sta-
tus/channel
I/O device digital inputs DI 16x24VDC M12-L 8xM12 (6ES7141-6BH00-0BB0)
Equipment Manual, 06/2021, A5E46570510-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 IO
Off
device and a communication partner
(e.g. IO controller).
There is an Ethernet connection between
the communications interface of your IO
On
device and a communication partner
(e.g. IO controller).
The "Node flash test" is running (the
RN/NS, ER/MS and MT/IO LEDs also flash).
Flashing
Communications error:
A physical connection exists, communi-
cation is not possible, however.
Status and error display of the channel status/channel error LED
LEDs Meaning
error
Process value = 0
Off
Process value = 1
On
Channel diagnostics
On
Meaning
Interrupts/diagnostics alarms
5.1 Status and error displays
Solution
Check whether the bus cable to the
switch/communication partner is inter-
rupted.
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Check the PROFINET IO settings.
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