Siemens SCALANCE X-300M PoE Administrator guide

SCALANCE X-300M PoE
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SIMATIC NET
Industrial Ethernet switches
SCALANCE X-300M PoE
Compact Operating Instructions
05/2016
A5
E02630810-09
Introduction
1
Safety notes
2
Description
3
Assembling
4
Connecting
5
Technical data
6
Dimension drawings
7
Approvals
8
Appendix
A

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E02630810-09
Ⓟ
05/2016 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
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 X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 3
Table of contents
1 Introduction............................................................................................................................................. 5
1.1 Information on the Operating Instructions (compact) ...............................................................5
1.2 Type designation.......................................................................................................................7
2 Safety notes............................................................................................................................................ 9
2.1 Important notes on using the device in hazardous areas .......................................................11
2.2 PELV.......................................................................................................................................12
3 Description............................................................................................................................................ 13
3.1 Product characteristics of the X308-2M PoE..........................................................................13
3.2 Power over Ethernet (PoE).....................................................................................................14
3.3 The SET / SELECT button......................................................................................................15
3.4 LED display.............................................................................................................................16
3.5 C-PLUG ..................................................................................................................................20
3.5.1 Area of application and function of the C-PLUG.....................................................................20
3.5.2 Removing and inserting the C-PLUG (compact housing).......................................................21
4 Assembling ........................................................................................................................................... 23
4.1 Safety notices for installation ..................................................................................................23
4.2 Suitable cables for temperatures above 70 °C - cable 50 °C - 70 °C (ATEX)........................24
4.3 Notes on installation................................................................................................................24
4.4 Installing on an S7-300 standard rail ......................................................................................25
4.5 Installation on a DIN rail..........................................................................................................25
4.6 Wall mounting .........................................................................................................................26
4.7 Fitting and removing media modules and SFPs.....................................................................27
5 Connecting ........................................................................................................................................... 29
5.1 Safety when connecting up.....................................................................................................29
5.2 Notes on commissioning.........................................................................................................31
5.3 Wiring rules .............................................................................................................................31
5.4 Grounding ...............................................................................................................................31
5.5 24 VDC signaling contact .......................................................................................................33
5.6 Connecting the external 24 VDC power supply......................................................................34
6 Technical data ...................................................................................................................................... 37
6.1 Construction, installation and environmental conditions.........................................................37
6.2 Connectors and electrical data ...............................................................................................39

Table of contents
SCALANCE X-300M PoE
4Compact Operating Instructions, 05/2016, A5E02630810-09
6.3 Cable lengths ......................................................................................................................... 41
6.4 Other properties ..................................................................................................................... 41
7 Dimension drawings.............................................................................................................................. 45
8 Approvals ............................................................................................................................................. 49
8.1 X-300M PoE approvals, certificates....................................................................................... 49
8.2 SCALANCE X-300 declaration of conformity......................................................................... 53
8.3 Overview of the approvals ..................................................................................................... 53
8.4 Mechanical stability in operation............................................................................................ 53
A Appendix .............................................................................................................................................. 55
A.1 The connector system M12/X coded according to IEC 61076-2-109 .................................... 55
Index .................................................................................................................................................... 57

SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 5
Introduction
1
1.1
Information on the Operating Instructions (compact)
Purpose of the Operating Instructions (compact)
Based on the Operating Instructions (compact), you will be able to install and connect up the
SCALANCE X-300M PoE correctly. The configuration and the integration of the device in a
network are not described in these instructions.
Validity of these Operating Instructions (compact)
These Operating Instructions (compact) apply to the product group SCALANCE X-300M PoE
as of firmware version 3.3.0
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.
X-300M PoE
Device For a device, only the device name is used. X308-2M 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 Information on the Operating Instructions (compact)
SCALANCE X-300M PoE
6Compact Operating Instructions, 05/2016, A5E02630810-09
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 you 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)
Products 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
1.2 Type designation
SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 7
1.2
Type designation
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 or 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
1.2 Type designation
SCALANCE X-300M PoE
8Compact Operating Instructions, 05/2016, A5E02630810-09

SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 9
Safety notes
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.
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.

Safety notes
SCALANCE X-300M PoE
10 Compact Operating Instructions, 05/2016, A5E02630810-09
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 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).
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).
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.
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 notes
2.1 Important notes on using the device in hazardous areas
SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 11
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.
2.1
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
2.2 PELV
SCALANCE X-300M PoE
12 Compact Operating Instructions, 05/2016, A5E02630810-09
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.

SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 13
Description
3
3.1
Product characteristics of the X308-2M PoE
Interfaces
Type
RJ-45 port electrical
10/100/1000 Mbps
Module slots
X308-2M PoE
4 2
Components of the product
The following parts ship with a SCALANCE X-300M PoE:
●Device with C-PLUG exchangeable medium
●4-pin terminal block for the power supply
●2-pin terminal block for the signaling contact
●Product CD with documentation and software
Order numbers
Type
Order number
X308-2M PoE
6GK5 308-2QG00-2AA2

Description
3.2 Power over Ethernet (PoE)
SCALANCE X-300M PoE
14 Compact Operating Instructions, 05/2016, A5E02630810-09
3.2
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.
The PoE ports of the switch
As a PSE, the X308-2M PoE supplies PoE-compliant devices with power over Ethernet. The
48 V power required to supply the powered devices is generated internally on the switch, no
extra power supply unit is necessary.
The X308-2M PoE uses the "alternative A" for this. 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 SCALANCE X308
-2M PoE on all four PoE ports is a
maximum of 30.8 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.

Description
3.3 The SET / SELECT button
SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 15
Possible attachments
The X308-2M PoE is a partially modular device and has 4 fixed ports and 2 slots for media
modules.
●
4 electrical ports
4 PoE-compliant RJ-45 jacks with securing collars for connection of end devices or
network segments. Non PoE-compliant end devices can also be connected to the PoE-
compliant RJ-45 jacks because the X308-2M PoE checks that the end devices are
suitable for the PoE function before applying the power.
●
4 modular ports via 2 module slots
2 media modules each with 2 ports are combined optically or electrically via the slots S1
and S2 depending on the application.
End devices and other network segments are connected according to the media modules
being used.
3.3
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
3.4 LED display
SCALANCE X-300M PoE
16 Compact Operating Instructions, 05/2016, A5E02630810-09
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.
3.4
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
3.4 LED display
SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 17
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

Description
3.4 LED display
SCALANCE X-300M PoE
18 Compact Operating Instructions, 05/2016, A5E02630810-09
Pressing the SELECT/SET button
starting at display mode A
Status of the "DM" LED
Display mode
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
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

Description
3.4 LED display
SCALANCE X-300M PoE
Compact Operating Instructions, 05/2016, A5E02630810-09 19
Note
Devices of the X-300EEC product group
When using only one 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 secondary 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.
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.

Description
3.5 C-PLUG
SCALANCE X-300M PoE
20 Compact Operating Instructions, 05/2016, A5E02630810-09
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.
3.5
C-PLUG
3.5.1
Area of application and function of the C-PLUG
Area of application
The C-PLUG (configuration plug) that ships with the product is an exchangeable memory
medium for storing the configuration data of the device. The device can also be operated
without a C-PLUG.
This allows fast and uncomplicated replacement of a device. The C-PLUG is taken from the
previous device and inserted in the new device. The first time it is started up, the
replacement device has the same configuration as the previous device except for the MAC
address set by the vendor.