Siemens SCALANCE XR324-4M EEC User manual

SCALANCE XR-300M EEC
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
SIMATIC NET
Industrial Ethernet switches
SCALANCE XR-300M EEC
Operating Instructions
11/2015
A5E02661176
-09
Introduction
1
Safety notes
2
Description
3
Assembling
4
Connecting
5
Technical data
6
Dimension drawings
7
Approvals
8

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E02661176-09
Ⓟ
11/2015 Subject to change
Copyright © Siemens AG 2010 - 2015.
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 are 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 EEC
Operating Instructions, 11/2015, A5E02661176-09 3
Table of contents
1 Introduction............................................................................................................................................. 5
1.1 Introduction to the XR-300M EEC ............................................................................................5
1.2 XR-300M EEC product group ...................................................................................................6
1.3 Type designations.....................................................................................................................7
2 Safety notes............................................................................................................................................ 9
2.1 Important notes on using the SCALANCE X-300 product family .............................................9
2.2 Important notes on using the device in hazardous areas .......................................................11
2.3 Important notes 100 to 240 VAC / 60 to 250 VDC..................................................................12
3 Description............................................................................................................................................ 13
3.1 Unpacking and checking.........................................................................................................13
3.2 Components of the XR-300M EEC product............................................................................14
3.3 Product characteristics of the SCALANCE XR324-4M EEC ..................................................15
3.4 The SET / SELECT button......................................................................................................16
3.5 LED display.............................................................................................................................17
3.6 C-PLUG ..................................................................................................................................21
3.6.1 Area of application and function of the C-PLUG.....................................................................21
3.6.2 Removal and insertion of the C-PLUG (rack devices)............................................................22
4 Assembling ........................................................................................................................................... 23
4.1 Notes on installation................................................................................................................23
4.2 19" rack mounting - XR-300M EEC product group.................................................................24
4.3 Installation of modular devices ...............................................................................................27
4.3.1 Installation and removal of media modules ............................................................................27
4.3.2 SFP installation in SFP media module ...................................................................................31
5 Connecting ........................................................................................................................................... 33
5.1 Connecting ground (EEC).......................................................................................................33
5.2 Signaling contact.....................................................................................................................35
5.2.1 24 VDC signaling contact (XR-300M EEC) ............................................................................35
5.2.2 Signaling contact 100 to 240 VAC / 60 to 250 VDC ...............................................................36
5.3 Diagnostics port ......................................................................................................................37
5.3.1 Diagnostics port ......................................................................................................................37
5.4 Power supply ..........................................................................................................................39
5.4.1 Power supply for the X-300EEC / XR-300M EEC ..................................................................39
5.4.2 Connecting devices with 24 V DC power supply ....................................................................40
5.4.2.1 Connecting the external 24 VDC power supply ......................................................................40
5.4.2.2 Connecting a redundant power supply to the XR300-EEC ....................................................41

Table of contents
SCALANCE XR-300M EEC
4Operating Instructions, 11/2015, A5E02661176-09
5.4.3 Connecting devices with 100 to 240 V AC power supply ...................................................... 43
5.4.3.1 100 ... 240 VAC - XR-300M EEC product group ................................................................... 43
5.4.3.2 Notes on the power supply 100 to 240 VAC.......................................................................... 43
5.4.3.3 Connecting the 100 to 240 VAC power supply ...................................................................... 44
6 Technical data ...................................................................................................................................... 47
6.1 Construction, installation and environmental conditions........................................................ 47
6.2 Connectors and electrical data .............................................................................................. 49
6.3 Cable lengths ......................................................................................................................... 51
6.4 Block architecture................................................................................................................... 52
6.5 Other properties ..................................................................................................................... 53
7 Dimension drawings.............................................................................................................................. 55
7.1 XR-300M EEC dimension drawings....................................................................................... 55
8 Approvals ............................................................................................................................................. 57
8.1 XR-300M EEC approvals, certificates ................................................................................... 57
8.2 XR-300M EEC declaration of conformity ............................................................................... 62
8.3 Overview of XR-300M EEC approvals................................................................................... 63
8.4 XR-300M EEC mechanical stability (in operation)................................................................. 64
Index .................................................................................................................................................... 65

SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 5
Introduction
1
1.1
Introduction to the XR-300M EEC
Purpose of the Operating Instructions (compact)
These operating instructions (compact) contain information with which you will be able to
install and connect up a device of the SCALANCE X-300 product line.
Validity of these Operating Instructions (compact)
These Operating Instructions (compact) are valid for the product group
XR-300M EEC
of the
SCALANCE X-300 product line (see product overview).
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 EEC
Device
For a device, only the device name is used.
XR324-4M EEC
Variant For a variant of the device, the device name has the appropriate variant
added to it in brackets (2x24V).
XR324-4M EEC
(1 x 24 V DC, cable outlet
front)
All variants of a
device
For all variants of the device, the device name has (all) added to it.
XR324-4M EEC
(all)
Where can I find more detailed information on the product?
A CD is supplied with the IE Switches X-300 on which you will find a detailed description of
the products in PDF format in the relevant subfolder.

Introduction
1.2 XR-300M EEC product group
SCALANCE XR-300M EEC
6Operating Instructions, 11/2015, A5E02661176-09
1.2
XR-300M EEC product group
Device
Properties
Order number
XR324-4M EEC
1 x 24 to 48 VDC
LEDs, connector data cable outlet on front
Connector power supply and diagnostics port at rear
6GK5 324-4GG00-1ER2
2 x 24 to 48 VDC
LEDs, connector data cable outlet on front
Connector power supply and diagnostics port at rear
6GK5 324-4GG00-2ER2
1 x 100 to 240 VAC / 60 to 250 VDC
LEDs, connector data cable outlet on front
Connector power supply and diagnostics port at rear
6GK5 324-4GG00-3ER2
2 x 100 to 240 VAC / 60 to 250 VDC
LEDs, connector data cable outlet on front
Connector power supply and diagnostics port at rear
6GK5 324-4GG00-4ER2
1 x 24 to 48 VDC
LEDs, connector power supply on front
Data cable outlet and diagnostics port at rear
6GK5 324-4GG00-1JR2
2 x 24 to 48 VDC
LEDs, connector power supply on front
Data cable outlet and diagnostics port at rear
6GK5 324-4GG00-2JR2
1 x 100 to 240 VAC / 60 to 250 VDC
LEDs, connector power supply on front
Data cable outlet and diagnostics port at rear
6GK5 324-4GG00-3JR2
2 x 100 to 240 VAC / 60 to 250 VDC
LEDs, connector power supply on front
Data cable outlet and diagnostics port at rear
6GK5 324-4GG00-4JR2

Introduction
1.3 Type designations
SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 7
1.3
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.

Introduction
1.3 Type designations
SCALANCE XR-300M EEC
8Operating Instructions, 11/2015, A5E02661176-09

SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 9
Safety notes
2
2.1
Important notes on using the SCALANCE X-300 product family
Safety notices on the use of the device
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 or opening the
device.
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 SELV / LPS (Limited Power Source) complying with IEC 60950-1 / EN
60950-1 / VDE 0805-1 must be connected to the power supply terminals. 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).
There is an additional requirement if devices are operated with a redundant power supply:
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
WARNING
Opening the device
DO NOT OPEN WHEN ENERGIZED.
General notices about 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.

Safety notes
2.1 Important notes on using the SCALANCE X-300 product family
SCALANCE XR-300M EEC
10 Operating Instructions, 11/2015, A5E02661176-09
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.
Safety notices on use in hazardous areas according to ATEX and IECEx
WARNING
Requirements for the cabinet/enclosure
To comply with EC Directive 94/9 (ATEX95) or the conditions of IECEx, 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 - 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 notes
2.2 Important notes on using the device in hazardous areas
SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 11
2.2
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 notes
2.3 Important notes 100 to 240 VAC / 60 to 250 VDC
SCALANCE XR-300M EEC
12 Operating Instructions, 11/2015, A5E02661176-09
2.3
Important notes 100 to 240 VAC / 60 to 250 VDC
Note on devices with power supply 100 to 240 VAC / 60 to 250 VDC
DANGER
Danger from line voltage
The supply voltage for the devices listed is 100 to 240 VAC and 60 to 250 VDC.
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 VAC power supply do not have an ATEX approval.
Devices with a 100 to 240 VAC power supply are not approved for use in hazardous areas
according to EC-RL-94/9 (ATEX).
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.
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.

SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 13
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.

Description
3.2 Components of the XR-300M EEC product
SCALANCE XR-300M EEC
14 Operating Instructions, 11/2015, A5E02661176-09
3.2
Components of the XR-300M EEC product
Note
•
When shipped, all devices have a C-PLUG exchangeable medium.
•
When shipped, the slots for the media modules have a dummy cover fitted.
•
Labels to identify the installed MM900 media modules are supplied with the modular
devices.
The consignment of a SCALANCE XR-300M EEC consist of the device itself and the
following parts:
●2 mounting brackets and 8 screws (M3x5 recessed head, drive: Torx) for 19" rack
installation
●Connecting cable for the diagnostics port
●Operating Instructions (compact) SCALANCE XR-300 M EEC.
●With devices with power supply 100 to 240 VAC / 60 to 250 VDC:
–A 3-pin terminal block (or two terminal blocks for redundant power supply) for the
signaling contacts.
–A 3-pin terminal block (or two terminal blocks for redundant power supply) for the
power supply.
●With devices with 24 to 48 VDC power supply:
–A 2-pin terminal block (or two terminal blocks for redundant power supply) for the
signaling contacts.
–A 4-pin terminal block (or two terminal blocks for redundant power supply) for the
power supply.

Description
3.3 Product characteristics of the SCALANCE XR324-4M EEC
SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 15
3.3
Product characteristics of the SCALANCE XR324-4M EEC
Connection options with the SCALANCE XR324-4M EEC
The SCALANCE XR324-4M EEC is a partially modular device and has 24 ports.
●
16 fixed ports in the base device:
16 RJ-45 jacks for connection of end devices or other network segments.
●
8 modular ports via module slots:
4 modules can be combined using slots (S1-S4) depending on the application. End
devices and other network segments are connected according to the modules being
used.
Figure 3-1 XR324-4M EEC
CAUTION
Use only approved media modules
If you use media modules that are not approved by Siemens AG, there is no guarantee
that the device will function according to the specification.
If you use unapproved media modules, this can lead to the following problems:
•Damage to the device
•Loss of the approvals
•Violation of the EMC regulations
Use only approved media modules.
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

Description
3.4 The SET / SELECT button
SCALANCE XR-300M EEC
16 Operating Instructions, 11/2015, A5E02661176-09
3.4
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.
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.

Description
3.5 LED display
SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 17
3.5
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.
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.

Description
3.5 LED display
SCALANCE XR-300M EEC
18 Operating Instructions, 11/2015, A5E02661176-09
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
Press twice
lit orange
Display mode C
Press 3 times
flashes yellow/orange
Display mode D
The "L1" and "L2" or "L" LEDs for the power supply
Whereas on other devices, the "L1" and "L2" LEDs indicate information about the power, on
the SCALANCE X306-1LD FE, this is done by the "L" LED. A redundant power supply for
this device can be recognized by the color of the LED.
Meaning in display mode A, B or C
LED
Color
Status
Meaning
L1 / L2
_
off
Power supply L1 / L2 lower than 17 V *
)
green
on
Power supply L1 / L2 higher than 17 V *
)
L
-
off
Power supplies L1 and L2 less than 17 V or not connected.
orange on Power supply L1 or L2 higher than 17 V
(no redundant supply).
green on Power supplies L1 and L2 higher than 17 V
(redundant supply).
*)) The following applies to the X-300EEC:
•For devices with power supply unit 24 to 48 VDC: Limit voltage = 17 VDC
•For devices with a multiple range power supply unit 100 to 240 VAC / 60 to 250 VDC:
Limit voltage = 46.5 VDC or 80 VAC

Description
3.5 LED display
SCALANCE XR-300M EEC
Operating Instructions, 11/2015, A5E02661176-09 19
Meaning in display mode D
LED
Color
Status
Meaning
L1 / L2 _ off Power supply L1 / L2 is not monitored. If L1 / L2 falls below
17 V *
)
, the signaling contact does not respond.
green on Power supply L1 / L2 is monitored. If L1 / L2 falls below 17
V *), the signaling contact responds.
L - off Power supplies L1 and L2 are not monitored. If L1 or L2
falls below 17 V, the signaling contact does not respond.
orange on Power supply L1 or L2 is monitored. If L1 or L2 falls below
17 V, the signaling contact responds.
green on Power supplies L1 and L2 are monitored. If L1 and L2 fall
below 17 V, the signaling contact responds.
*)) The following applies to the X-300EEC:
•For devices with power supply unit 24 to 48 VDC: Limit voltage = 17 VDC
•For devices with a multiple range power supply unit 100 to 240 VAC / 60 to 250 VDC:
Limit voltage = 46.5 VDC or 80 VAC
Note
Devices of the X-300EEC product group
When using only o
ne power supply unit 24 VDC and two 24 VDC power supplies, the LEDs
"L1" and "L2" signal the existence of the power supply L1 and L2.
When using two 24
VDC power supply units, the LEDs "L1" and "L2" signal the existence of
the primary voltage and the secon
dary voltage for both power supply units. If the power
supply is intact, a fault occurring on a power supply unit on the secondary side can be
recognized.
The P1, P2, ... LEDs for the port status
The P1, P2, ... LEDs show information on the status of their port (transmission speed, mode,
port monitoring). The meaning of these LEDs depends on the display mode ("DM" LED).
Meaning in display mode A
LED color
LED status
Meaning
- off No valid link to the port (for example station turned off or
cable not connected).
green on Link exists and port in normal status. In this status, the
port can receive and send data.
flashes once per second
Link exists and port in "blocking" status. In this status, the
port only sends and receives management data (no user
data).
flashes 3 times per sec-
ond
Link exists and port turned off by management. In this
status, no data is sent or received via the port.
flashes 4 times per sec-
ond
Port exists and is in the "monitor port" status. In this sta-
tus, the data traffic of another port is mirrored to this port.

Description
3.5 LED display
SCALANCE XR-300M EEC
20 Operating Instructions, 11/2015, A5E02661176-09
LED color
LED status
Meaning
yellow flashes / lit Receiving data at port.
With SCALANCE X-300 devices, both the receipt and the
sending of data is indicated for the optical gigabit ports.
Meaning in display mode B
LED color
LED status
Meaning
-
off
Port operating at 10 Mbps.
green
on
Port operating at 100 Mbps.
orange
on
Port operating at 1000 Mbps.
If there is a problem on the connection and the type of transmission is fixed (autonegotiation
off), the desired status, in other words the set transmission speed (1000 Mbps, 100 Mbps, 10
Mbps) continues to be displayed. If there is a problem on the connection and autonegotiation
is active, the port LED goes off.
Meaning in display mode C
LED color
LED status
Meaning
-
off
Port operating in half duplex.
green
on
Port operating in full duplex.
Meaning in display mode D
LED color
LED status
Meaning
- off The port is not monitored; in other words, if a link is not
established at the port, this does not trigger the signaling
contact.
green on The port is monitored, in other words, if no connection
was established at the port (for example no cable insert-
ed), this triggers the signaling contact and an error state
results.