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LK1/LK2 LEDs on the BusAdapter
Table 5- 11
Status and error displays of LK1/LK2 LEDs
LED
LK1/LK2
There is no Ethernet connection between the
PROFINET IO interface of your PROFINET
Off
device and a communication partner (e.g. IO
controller).
There is an Ethernet connection between the
PROFINET IO interface of your PROFINET
On
device and a communication partner (e.g. IO
controller).
The "Node flash test" is running. (The
RN/ER/MT LEDs are also flashing.)
Flashes
5.3.2
Diagnostics by user program
5.3.2.1
Extended channel diagnostics
Function
The channel diagnostics provides information about channel faults of the PN/MF Coupler.
Channel faults are mapped as channel diagnostics in IO diagnostic data records.
You read the data record with the "RDREC" instruction.
Structure of the diagnostic data records
The data records supported by the PN/MF Coupler are based on the PROFINET IO standard -
Application Layer Service Definition V2.3.
If necessary, you can purchase the standard from the PROFIBUS Nutzerorganisation
(PROFIBUS user organization (https://www.profibus.com)).
PN/MF Coupler
Hardware Installation and Operating Manual, 07/2020, A5E50018670-AA
5.3 PROFINET IO interrupts, diagnostics, error messages and system events
Meaning
Remedy
Check whether the bus cable to the switch/IO control-
ler is interrupted.
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PROFINET IO
53
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