Siemens SCALANCE XR324-4M PoE Administrator guide

SCALANCE XR-300M PoE
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SIMATIC NET
Industrial Ethernet switches
SCALANCE XR-300M PoE
Compact Operating Instructions
05/2016
A5E02661178
-10
Introduction
1
Safety instructions
2
Description
3
Installation
4
Connecting up
5
Technical specifications
6
Dimension drawings
7
Approvals
8
Appendix
A

Siemens AG
Division
Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E02661178-10
Ⓟ
04/2016 Subject to change
Copyright © Siemens AG 2010 - 2016.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance a
re required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 3
Table of contents
1 Introduction............................................................................................................................................. 5
1.1 Product group XR-300M PoE ...................................................................................................7
1.2 Type designations.....................................................................................................................8
2 Safety instructions................................................................................................................................... 9
2.1 Important notes on using the product group XR-300M PoE.....................................................9
2.2 PELV.......................................................................................................................................12
2.3 Important notes on using the device in hazardous areas .......................................................12
2.4 Important notices 100 to 240 VAC..........................................................................................13
2.5 Safety requirements - Installation 100 to 240 VAC.................................................................13
3 Description............................................................................................................................................ 15
3.1 Unpacking and checking.........................................................................................................15
3.2 Components of the product XR-300M PoE ............................................................................15
3.3 Power over Ethernet (PoE).....................................................................................................16
3.4 Product characteristics............................................................................................................17
3.5 The SET / SELECT button......................................................................................................18
3.6 LED display.............................................................................................................................19
3.7 C-PLUG ..................................................................................................................................23
3.7.1 Area of application and function of the C-PLUG.....................................................................23
3.7.2 Removal and insertion of the C-PLUG (rack devices)............................................................24
4 Installation ............................................................................................................................................ 27
4.1 Safety notices for installation ..................................................................................................27
4.2 Suitable cables for temperatures above 70 °C - cable 50 °C - 70 °C (ATEX)........................28
4.3 Suitable cables for temperatures in excess of 70 °C (ATEX).................................................28
4.4 Notes on installation................................................................................................................29
4.5 19" rack mounting ...................................................................................................................30
4.6 Vertical installation of rack devices.........................................................................................35
4.7 Desktop operation...................................................................................................................35
4.8 Installation of modular devices ...............................................................................................36
4.8.1 Installation and removal of media modules ............................................................................36
4.8.2 SFP installation in SFP media module ...................................................................................40
5 Connecting up....................................................................................................................................... 43
5.1 Notes on commissioning.........................................................................................................44

Table of contents
SCALANCE XR-300M PoE
4Compact Operating Instructions, 05/2016, A5E02661178-10
5.2 Connecting functional ground ................................................................................................ 45
5.3 Signaling contact.................................................................................................................... 46
5.3.1 24 V DC signaling contact (XR-300M)................................................................................... 46
5.4 Diagnostics port ..................................................................................................................... 47
5.4.1 Diagnostics port rear.............................................................................................................. 47
5.5 Power supply.......................................................................................................................... 48
5.5.1 Power supply XR-300M PoE ................................................................................................. 48
5.5.2 Connecting devices with 24 VDC power supply .................................................................... 49
5.5.2.1 24 VDC - XR-300M PoE product group................................................................................. 49
5.5.2.2 Connecting the external 24 VDC power supply ..................................................................... 49
5.5.3 Connecting devices with 100 to 240 VAC power supply ....................................................... 51
5.5.3.1 100 to 240 VAC XR-300M PoE product group ...................................................................... 51
5.5.3.2 Notes on the power supply 100 to 240 VAC.......................................................................... 51
5.5.3.3 Fitting the connector for 100 to 240 V AC.............................................................................. 52
5.5.3.4 Connecting the 100 to 240 V AC power supply ..................................................................... 53
6 Technical specifications ........................................................................................................................ 55
6.1 Construction, installation and environmental conditions........................................................ 55
6.2 Connectors and electrical data .............................................................................................. 57
6.3 Cable lengths ......................................................................................................................... 59
6.4 Other properties ..................................................................................................................... 61
7 Dimension drawings.............................................................................................................................. 63
8 Approvals ............................................................................................................................................. 65
8.1 XR-300M PoE approvals, certificates .................................................................................... 65
8.2 SCALANCE X-300 declaration of conformity......................................................................... 68
8.3 Overview of XR-300M PoE approvals ................................................................................... 69
8.4 Mechanical stability in operation............................................................................................ 69
A Appendix .............................................................................................................................................. 71
A.1 The connector system M12/X coded according to IEC 61076-2-109 .................................... 71
Index .................................................................................................................................................... 73

SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 5
Introduction
1
Purpose of the Operating Instructions (compact)
With the Operating Instructions (compact), you will be able to mount and connect up the
SCALANCE XR324-4M PoE and XR324-4M PoE TS correctly. The configuration and the
integration of the relevant device in a network are not described in these instructions.
Validity of these Operating Instructions (compact)
These Operating Instructions (compact) apply to the following switches:
●XR324-4M PoE
●XR324-4M PoE TS
Names of the devices in these operating instructions (compact)
Classification
Description
Terms used
Product line For all devices and variants of all product groups within the SCALANCE
X-300 product line, the term IE switches X-300 is used.
IE switches X-300
Product group
For all devices and variants of a product group, only the product group is
used.
XR-300M PoE
Device
For a device, only the device name is used.
XR-324-4M PoE
Variant For a variant of the device, the device name has the appropriate variant
added to it in brackets (2x24V).
(-)
All variants of a
device
For all variants of the device, the device name has (all) added to it. (-)
Documentation on the accompanying CD
You will find detailed information on configuration in the configuration manual
SCALANCE X300/X400 on the accompanying CD in the file:
PH_SCALANCE-X-300-X-400_76.pdf

Introduction
1.1 Product group XR-300M PoE
SCALANCE XR-300M PoE
6Compact Operating Instructions, 05/2016, A5E02661178-10
Security messages
Note
Siemens offers IT security mechanisms for its automation and drive product portfolio in order
to support the safe operation of the plant/machine. Our products are also continuously
developed further with regard to IT security. We therefore recommend that y
ou regularly
check for updates of our products and that you only use the latest versions. You will find
information in:
(
http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo2&aktprim=99&lang=
en
)
Here, you can register for a product
-specific newsletter.
For the safe operation of a plant/machine, however, it is also necessary to integrate the
automation components into an overall IT
security concept for the entire plant/machine,
which corresponds to the state
-of-the-art IT technology. You will find information on this in:
(http://www.siemens.com/industrialsecurity)
Product
s from other manufacturers that are being used must also be taken into account.
SIMATIC NET glossary
Explanations of many of the specialist terms used in this documentation can be found in the
SIMATIC NET glossary.
You will find the SIMATIC NET glossary here:
●SIMATIC NET Manual Collection or product DVD
The DVD ships with certain SIMATIC NET products.
●On the Internet under the following address:
50305045 (http://support.automation.siemens.com/WW/view/en/50305045)

Introduction
1.1 Product group XR-300M PoE
SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 7
1.1
Product group XR-300M PoE
Device
Properties
Order number
XR324-4M PoE
1 x 24 VDC, PoE
LEDs, connector power supply and data cable outlet on front
Diagnostics port at rear.
6GK5 324-4QG00-1AR2
1 x 100 to 240 VAC, PoE
LEDs, connector power supply and data cable outlet on front
Diagnostics port at rear.
6GK5 324-4QG00-3AR2
1 x 24 VDC, PoE
LEDs and diagnostics port at rear,
connector power supply and data cable outlet at rear
6GK5 324-4QG00-1HR2
1 x 100 to 240 VAC, PoE
LEDs and diagnostics port on front,
connector power supply and data cable outlet at rear
6GK5 324-4QG00-3HR2
XR324-4M PoE TS
1 x 24 VDC, PoE, module varnished
LEDs, connector power supply and data cable outlet on front
Diagnostics port at rear.
6GK5 324-4QG00-1CR2
Note
For more information on Power over Ethernet (PoE), refer to the Configuration Manual X
-
300/X
-400.

Introduction
1.2 Type designations
SCALANCE XR-300M PoE
8Compact Operating Instructions, 05/2016, A5E02661178-10
1.2
Type designations
Structure of the type designation
The type designation of an IE Switch X-300 is made up of several parts that have the
following meaning:
Interfaces of devices without optical ports:
Interface
Property
FE
Electrical RJ-45 port for 10/100 Mbps.
[-]
Electrical RJ-45 port for 10/100 Mbps and 10/100/1000 Mbps.
Interfaces of devices with optical ports:
Interface
Property
FE
SC port 100 Mbps multimode FO cable (up to max. 5 km).
LD FE
SC port 100 Mbps single mode FO cable (up to max. 26 km).
[-]
SC port 1000 Mbps multimode FO cable (up to max. 750 m).
LD
SC port 1000 Mbps single mode FO cable (up to max. 10 km).
LH
SC port 1000 Mbps single mode FO cable (up to max. 40 km).
LH+
SC port 1000 Mbps single mode FO cable (up to max. 70 km).
If information applies to all devices, the term "IE Switches X-300" is used. If information
applies to only a particular product group, the relevant names will be used without extra
information on the type or number of interfaces. Examples: "X-300" stands for non-modular
devices with a compact housing, "XR-300" means all rack devices, "X-300M" means all
modular devices etc.

SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 9
Safety instructions
2
Read the safety notices
Note the following safety notices. These relate to the entire working life of the device.
You should also read the safety notices relating to handling in the individual sections,
particularly in the sections "Installation" and "Connecting up".
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
WARNING
EXPLOSION HAZARD
DO NOT OPEN WHEN ENERGIZED.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.
2.1
Important notes on using the product group XR-300M PoE
Safety notices on the use of the devices
The following safety notices must be adhered to when setting up and operating the device
and during all associated work such as installation, connecting up, replacing devices or
opening the device.

Safety instructions
2.1 Important notes on using the product group XR-300M PoE
SCALANCE XR-300M PoE
10 Compact Operating Instructions, 05/2016, A5E02661178-10
General information
WARNING
Safety extra low voltage
The equipment is designed for operation with Safety Extra-Low Voltage (SELV) by a
Limited Power Source (LPS). (This does not apply to 100 V...240 V devices.)
This means that only safety extra-low voltage (SELV) and limited power sources (LPS)
complying with IEC 60950-1 / EN 60950-1 / VDE 0805-1 must be connected to the power
supply terminals or the power supply unit for the equipment power supply must comply with
NEC Class 2, as described by the National Electrical Code (r) (ANSI / NFPA 70).
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
A power source that supplies safety extra low voltage combined with a following NEC Class
2 power limiter also meets the requirements according to IEC 60950-1 / EN 60950-1 / VDE
0805-1 or NEC Class 2. A suitable power limiter is for example the redundancy module
SITOP PSE202U NEC Class 2 (article number 6EP1962-2BA00).
The maximum current via the 24 V terminals is 8 A. You should therefore include a fuse
that trips at a current higher than 8 A. The fuse must meet the following requirements:
•Suitable for DC (min. 60 V / max. 8 A)
•Breaking current at least 10 kA
•UL/CSA listed (UL 248-1 / CSA 22.2 No.
•Classes R, J, L, T or CC
As an alternative, the following requirements:
•Suitable for DC (min. 60 V / max. 8 A)
•Breaking current at least 10 kA
•Approved in compliance with IEC 60127-1 / EN 60127-1
•Breaking characteristics: B or C for a circuit breaker or slow-blow fuse
WARNING
Opening the device
DO NOT OPEN WHEN ENERGIZED.

Safety instructions
2.1 Important notes on using the product group XR-300M PoE
SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 11
General notices regarding use in hazardous areas
WARNING
Risk of explosion when connecting or disconnecting the device
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
WARNING
Replacing components
EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION
2 OR ZONE 2.
WARNING
Requirements for the cabinet/enclosure
When used in hazardous environments corresponding to Class I, Division 2 or Class I,
Zone 2, the device must be installed in a cabinet or a suitable enclosure.
Notices for use in hazardous areas according to ATEX
WARNING
Requirements for the cabinet/enclosure
To comply with EU Directive 94/9 (ATEX95), this enclosure must meet the requirements of
at least IP54 in compliance with EN 60529.
WARNING
Suitable cables for temperatures in excess of 70 °C
If the cable or conduit entry point exceeds 70 °C or the branching point of conductors
exceeds 80 °C, special precautions must be taken. If the equipment is operated in an air
ambient in excess of 50 °C up to 70°C, only use cables with admitted maximum operating
temperature of at least 80 °C.
WARNING
Protection against transient voltage surges
Provisions shall be made to prevent the rated voltage from being exceeded by transient
voltage surges of more than 40%. This criterion is fulfilled, if supplies are derived from
SELV (Safety Extra-Low Voltage) only.

Safety instructions
2.2 PELV
SCALANCE XR-300M PoE
12 Compact Operating Instructions, 05/2016, A5E02661178-10
2.2
PELV
Note
Safety extra-low voltage
The supply of the devices by PELV (Protective Extra Low Voltage) according to DIN VDE
0100
-410 or IEC 60364-4-41 is permitted when the generated nominal voltage does not
exceed the voltage limits 25 VAC or 60 VDC.
2.3
Important notes on using the device in hazardous areas
WARNING
WARNING - EXPLOSION HAZARD -
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
WARNING
Restricted area of application
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
WARNING
Restricted area of application
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.

Safety instructions
2.4 Important notices 100 to 240 VAC
SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 13
2.4
Important notices 100 to 240 VAC
Note on devices with power supply 100 to 240 V AC
WARNING
Danger from line voltage
The supply voltage for the devices listed is 100 to 240 VAC.
This device can only function correctly and safely if it is transported, stored, set up, and
installed correctly, and operated and maintained as recommended.
Connecting and disconnecting may only be performed by an electrical specialist.
Connect or disconnect power supply cables only when the power is turned off.
WARNING
Devices with a 100 to 240 V AC power supply do not have an ATEX or IECEx approval.
Devices with a 100 to 240 V AC power supply are not approved for use in hazardous areas
according to EC-RL-94/9 ATEX or IECEx.
NOTICE
Securing cables with dangerous voltage
Make sure that the connector cannot be released accidentally by pulling on the connecting
cable. Lay the cables in cable ducts or cable channels and secure the cables, where
necessary, with cable ties.
2.5
Safety requirements - Installation 100 to 240 VAC
Safety requirements for installation
According to the IEC 61131-2 standard and therefore in accordance with the EU directive
2006/95/EC (Low Voltage Directive), the devices are "open equipment" and in accordance
with UL/CSA certification, they are an "open type".
To fulfill requirements for safe operation with regard to mechanical stability, flame
retardation, stability, and shock-hazard protection, the following alternative types of
installation are specified:
●Installation in a suitable cabinet.
●Installation in a suitable enclosure.
●Installation in a suitably equipped, enclosed control room.

Safety instructions
2.5 Safety requirements - Installation 100 to 240 VAC
SCALANCE XR-300M PoE
14 Compact Operating Instructions, 05/2016, A5E02661178-10

SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 15
Description
3
3.1
Unpacking and checking
Unpacking, checking
WARNING
Do not use any parts that show evidence of damage
If you use damaged parts, there is no guarantee that the device will function according to
the specification.
If you use damaged parts, this can lead to the following problems:
•Injury to persons
•Loss of the approvals
•Violation of the EMC regulations
Use only undamaged parts.
1. Make sure that the package is complete.
2. Check all the parts for transport damage.
3.2
Components of the product XR-300M PoE
Components that ship with the SCALANCE XR324-4M PoE and XR324-4M PoE TS switches
The following components ship with a SCALANCE XR324-4M PoE or XR324-4M PoE TS:
●Device with C-PLUG exchangeable medium
●2 mounting brackets and 8 screws (M3x5 recessed head, drive: Torx) for 19" rack
installation
●Connecting cable for the diagnostics port
●Product CD with documentation and software

Description
3.3 Power over Ethernet (PoE)
SCALANCE XR-300M PoE
16 Compact Operating Instructions, 05/2016, A5E02661178-10
●For devices with a 100 to 240 VAC power supply:
–A 2-pin terminal block for the power supply
–A 2-pin terminal block for the signaling contact
●With devices with 24 V DC power supply:
–4-pin terminal block for the power supply
–2-pin terminal block for the signaling contact
–4 adhesive feet for desktop mounting
3.3
Power over Ethernet (PoE)
Power over Ethernet (PoE)
With PoE, the power for networked devices is carried via Ethernet. Here, there are two
methods of supplying power:
●Alternative A
Here, the voltage is transferred on the data wires 1, 2, 3 and 6 of the Ethernet cable
Requirements for the Ethernet cable:
–For 10Base-T/100Base-TX, a 4-wire cable is adequate for data transmission and
power supply.
–With 1000BASE-T, an 8-wire cable is necessary for data transmission.
●Alternative B
Power is transferred on the free wires 4, 5, 7 and 8 of the Ethernet cable.
Requirements for the Ethernet cable: For 10Base-T/100Base-TX/1000BASE-T, an 8-wire
cable is needed.
PoE-compliant devices can be divided into the following groups:
●PSE - power sourcing equipment
These inject power onto the Ethernet cable.
●PD - powered devices
These are supplied with power via Ethernet.
PoE ports of the SCALANCE XR324-4M PoE and XR324-4M PoE TS switches
As PSEs, these devices supply PoE-compliant devices with power over Ethernet. The power
required to supply the powered devices is generated internally on the switches, no extra
power supply unit is necessary.

Description
3.4 Product characteristics
SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 17
The switches use the "Alternative A" method. Per RJ-45 port, a maximum of 15.4 W are
available for supplying a PoE-compliant device. If a Cat5/Cat5e cable with a maximum
length of 100 m is used, the connected device can be supplied with a power of 12.95 W.
Note
The total power provided by the switches on all eight PoE ports is a maximum of 53.2 W.
The PoE ports meet the conditions listed in the IEEE 802.3af / IEEE 802.3at standard
(type 1) for environment A , in other words power supply over Ethernet within a power supply
system. For details of configuring and enabling PoE for individual ports, refer to the
configuration manual SCALANCE X-300 / X-400 on the accompanying CD.
3.4
Product characteristics
Connection options of the SCALANCE XR324-4M PoE and XR324-4M PoE TS switches
The switches are partly modular devices and all have 24 ports.
●
16 fixed ports on the base device:
–Ports P1 to P8
8 PoE-compliant gigabit ports (RJ-45 jacks with securing collars) for connection of end
devices or other network segments.
Non PoE-compliant end devices can also be connected to the PoE-compliant RJ-45
jacks because the switches check that the end devices are suitable for the PoE
function before applying the power.
–Ports P9 to P16
8 gigabit ports (RJ-45 jacks with securing collars) for connection of end devices or
other network segments (no PoE).
●
8 modular ports via 4 module slots:
4 media modules each with 2 ports are combined optically or electrically via the slots S1
to S4 depending on the application. End devices and other network segments are
connected according to the media modules being used.
Image 3-1 XR324-4M PoE and XR324-4M PoE TS

Description
3.5 The SET / SELECT button
SCALANCE XR-300M PoE
18 Compact Operating Instructions, 05/2016, A5E02661178-10
CAUTION
Use only approved modules in the slots
Possible module connection types:
•2 x RJ-45
•2 x FX100
•2 x FX1000
•or 2 x SFP slots
With FX, single mode fibers or multimode fibers are possible.
Connecting end devices or other network segments does not depend on the module slots.
Slot number
S1
S2
Port number
P1 P2 P3 P4 P5 P6 P7 P8 P1 P2 P1 P2
Slot number
S3
S4
Port number
P9
P10
P11
P12
P13
P14
P15
P16
P1
P2
P1
P2
Connection
type
Electrical: Gigabit Ethernet Connection type depend-
ing on module used
3.5
The SET / SELECT button
The SET/SELECT button is located on the top of the housing of devices of the X-300 EEC
series. On all other devices, this button is on the front panel of the housing beside the LED
display. The SET/SELECT button has several functions that are described below.
Change the display mode
By pressing the button briefly, you change to the display mode of the LED display. For more
detailed information on this topic, refer to the section "LED display".
Resetting the device to the factory defaults
If you reset, all the changes you have made will be overwritten by factory defaults. Follow the
steps outlined below:
1. Turn on display mode A. Display mode A is active when the "DM" LED is not lit. If this
LED is lit or flashing, you will need to press the SET/SELECT briefly (possibly several
times) until the "DM" LED goes off. If the SELECT/SET button is not pressed for longer
than a minute, the device also turns on display mode A.
2. Hold down the SELECT/SET button for 12 seconds. If you release the button before the
12 seconds have elapsed, the reset is canceled.

Description
3.6 LED display
SCALANCE XR-300M PoE
Compact Operating Instructions, 05/2016, A5E02661178-10 19
Definition of the fault mask
Using the fault mask, you specify an individual "good status" for the connected ports and the
power supply. Deviations from this status are then displayed as errors/faults.
1. Turn on display mode A or D. Display mode A is active when the "DM" LED is not lit.
Display mode D is active when the "DM" LED flashes yellow/orange. If a different display
mode is active, you will need to press the SET/SELECT briefly (possibly several times)
until the required display mode is active.
2. Hold down the SET/SELECT button for five seconds. After three seconds, the "DM" LED
begins to flash. If you release the button before the five seconds have elapsed, the
previous fault mask will be retained.
Enable/disable the redundancy manager
1. Turn on display mode B. Display mode B is active when the "DM" LED is lit green. If a
different display mode is active, you will need to press the SET/SELECT briefly (possibly
several times) until display mode B is active.
2. Hold down the SET/SELECT button for five seconds. After three seconds, the "DM" LED
begins to flash. If you release the button before the five seconds have elapsed, the action
is aborted.
3. The result of the action depends on the initial situation:
–If the redundancy manager and media redundancy were disabled, media redundancy
is also enabled after enabling the redundancy manager.
–If you disable the redundancy manager, media redundancy remains enabled.
3.6
LED display
The "RM" LED for the "redundancy manager" function
The "RM" LED indicates whether or not the device is operating in the role of redundancy
manager and whether or not the ring is operating error-free.
LED color
LED status
Meaning
-
off
The device is not operating in the role of "redundancy manager".
green on The device is operating in the role of redundancy manager. The
ring is working without problems, monitoring is activated.
green flashes The device is operating in the role of redundancy manager. An
interruption has been detected on the ring and the device has
switched through.

Description
3.6 LED display
SCALANCE XR-300M PoE
20 Compact Operating Instructions, 05/2016, A5E02661178-10
The "SB" LED for the standby function
This LED shows the status of the standby function.
LED color
LED status
Meaning
-
off
The standby function is disabled.
green on
The standby function is enabled. The standby section is passive.
green
flashes
The standby function is enabled. The standby section is active.
The "F" LED for the fault status
The "F" LED (fault) provides information on the error/fault status of the device. While the
device is starting up, this LED has the following meaning:
LED color
LED status
Meaning during the device startup
- off Device startup completed successfully.
red
on
Device startup not yet completed or a fault/error has occurred.
red
flashes
Bad firmware image.
During normal operation, the "F" LED provides the following information:
LED color
LED status
Meaning during operation
-
off
No operating problems.
red
on
The device has detected an error. The signaling contact opens.
The "DM" LED for the display mode
The "DM" LED (Display Mode) indicates which of the four display modes A, B, C or D is
currently active. The meaning of the L1, L2 and P1, P2, ... LEDs depends on the display
mode.
LED color
LED status
Meaning
-
off
Display mode A
green
on
Display mode B
orange
on
Display mode C
yellow/orange
flashes
Display mode D
Selecting the display mode
Press the SELECT/SET button to set the required display mode. If the SELECT/SET button
is not pressed for longer than a minute, the device automatically changes to display mode A.
Pressing the SELECT/SET button
starting at display mode A
Status of the "DM" LED
Display mode
-
off
Display mode A(default mode)
Press once
lit green
Display mode B