Siemens 7SR51 - Page 447

Shows a 10 s mean value of the telegrams
received and transmitted.
Ethernet
Meter 11
CPU load=
Information on the processor load of the
communication module.
Ethernet
Meter 12
LRx1/LTx1=
Information on the status of the optical
interface. The first value in the line is
determined from the receive output at the
port; it shows norm for an output up to
-28 dBm, weak up to -30 dBm.
If the receive output is less1, only bars will
be displayed. This does not necessarily
mean a broken connection; a broken
connection will be shown in meter 7. The
status weak should normally not occur if
the optical budget is kept within permis-
sible limits. If it is displayed, the connec-
tions need to be checked. The second
value is the transmit output. The display
norm shows a transmit output of -16 dBm,
which is the normal state. Lower outputs
are indicated by bars. This does not indi-
cate that the transmitter will fail straight
away but that the driver, due to aging, is
no longer able to deliver a transmit output
of -16 dBm2. Whether the connection as a
whole is able to function depends also on
the condition of the cables and the
receiver.
Precise information is provided by the
symbol error rate in the FEC statistics on
the module home page (see ????).
Ethernet
Meter 13
LRx2/LTx2=
As above Meter 12
Ethernet
Meter 14
Switch RSTP
Redundancy mode RSTP set in the switch.
Ethernet
Meter 15
Priority =
Displayed as set in Reydisp Manager.
Ethernet
Meter 16
Bridge Id =
Displayed as set in Reydisp Manager.
Ethernet
Meter 17
Hello Time =
Displayed as set in Reydisp Manager.
Ethernet
Meter 18
Max Age Tm =
Displayed as set in Reydisp Manager.
Ethernet
Meter 19
Forward Del =
Displayed as set in Reydisp Manager.
Ethernet
Meter 20
Max TransmCnt =
Displayed as set in Reydisp Manager.
Ethernet
Meter 21
R/RS1=A/DR/RS2=R/F
Interface status in the RSTP ring. The role
and the status (R/Sx=) are displayed for
both channels (ports).
Instruments and Meters
8.2 Instruments
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual 447
C53000-G7040-C014-1, Edition 11.2019