Siemens SIMATIC ET 200AL - Page 217

Interrupts, error messages, diagnostics and system alarms
5.1 Status and error displays
Interface module IM 157-1 PN (6ES7157-1AB00-0AB0)
28 Manual, 12/2016, A5E32347036-AD
LED P1 LINK, LED P2 LINK
Table 5- 2 Status displays of the LEDs P1 LINK and P2 LINK
LEDs
Meaning
Solution
P1 LINK
P2 LINK
Off
There is no connection between the
PROFINET interface of your PROFINET
device and a communication partner (e.g.,
IO controller).
Check whether the bus cable to the switch
or IO controller is disconnected.
On
There is no connection between the
PROFINET interface of your PROFINET
device and a communication partner (e.g.,
IO controller).
-
Flashes
The "Node flash test" is run (the RUN,
ERROR and MAINT LEDs also flash).
-
LED ET-CON1, LED ET-CON2
Table 5- 3 Status displays of the LEDs ET-CON1 and ET-CON2
LEDs
Meaning
Solution
ET-CON1
ET-CON2
Off
There are no I/O modules available at the
respective ET-Connection or the modules
do not have supply voltage.
Check the wiring for the ET-Connection or
the supply voltage for the I/O module.
On
A communications connection to at least
one IO module at the corresponding ET-
Connection is available.
-