Siemens Simatic S7-1500H Instrukcja obsługi sprzętu - Strona 33
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Interrupts, diagnostics, error messages and system events
4.1 Status and error display of the CPU
Note
MAINT LED of the two CPUs
The MAINT LEDs of both CPUs only go out when the following conditions are fulfilled:
• The CPUs are in the RUN-Redundant system state.
• No maintenance is demanded.
Note
LED displays in redundant operating state
In the RUN-Redundant system state, the LED displays on both CPUs are identical (exception:
you are performing an LED flash test on one CPU).
Meaning of LINK RX/TX LED
Each port has a LINK RX/TX LED. The table below shows the various LED patterns of the ports
of the CPU 1513R-1 PN.
Table 4- 2
Meaning of LINK RX/TX LED
LINK TX/RX LED
off
Flashes green
Illuminated green
LED flashes
yellow/green
Note
"LED" instruction
You can read the status (e.g. "On" or "Off") of LEDs of a CPU or a module using the "LED"
instruction. Note, however, that it is not possible to read the LED status of the LINK RX/TX
LEDs on all S7-1500 R/H CPUs.
You can find additional information on the "LED" instruction in the STEP 7 online help.
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There is no Ethernet connection between the PROFINET interface of the PROFINET device and
the communication partner.
No data is currently being sent/received via the PROFINET interface.
There is no LINK connection.
The redundancy connections were interrupted.
The CPU performs an LED flash test.
There is an Ethernet connection between the PROFINET interface of your PROFINET device
and a communication partner.
The redundancy connections are OK.
Data is currently being received/sent by a communication partner via the PROFINET interface
of the PROFINET device.
Note that the human eye perceives this LED image as an LED that is lit yellow or flickering
yellow.
Meaning
CPU 1513R-1 PN (6ES7513-1RL00-0AB0)
Equipment Manual, 05/2021, A5E42009333-AC