Siemens SIMATIC S7-1500R/H Manuale - Pagina 34

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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 of the X1, X2, X3 and X4 interfaces has a LINK RX/TX LED. The table below

shows the various LED patterns of the ports of the CPU 1517H-3 PN.

Table 4- 2

Meaning of LINK RX/TX LED

LINK TX/RX LED

Off

Flashes green

Illuminated green

LED flashes

yellow/green

CPU 1517H-3 PN (6ES7517-3HP00-0AB0)

Equipment Manual, 11/2019, A5E42011886-AB

There is no connection between the interface of the device and a communication partner.

No data is currently being sent/received via the interface.

There is no LINK connection.

The redundancy connections were interrupted.

The CPU performs an LED flash test.

There is a connection between the interface of the device and a communication partner.

The redundancy connections are OK.

Data is currently being received or sent by a communication partner via the interface of the

device.

Interrupts, diagnostics, error messages and system events

4.1 Status and error display of the CPU

Meaning