Siemens SCALANCE XR524-8C User manual

SCALANCE XR-500
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SIMATIC NET
Industrial Ethernet switches
SCALANCE XR-500
Operating Instructions
05/2014
A5E03275845
-05
Introduction
1
Safety notes
2
Description of the device
3
Assembling
4
Connecting
5
Uninstalling
6
Upkeep and maintenance
7
Technical data
8
Dimension drawings
9
Certification
10

Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: A5E03275845
Ⓟ
05/2014 Subject to change
Copyright © Siemens AG 2011 - 2014.
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-500
Operating Instructions, 05/2014, A5E03275845-05 3
Table of contents
1 Introduction...................................................................................................................................5
2 Safety notes .................................................................................................................................9
3 Description of the device .............................................................................................................. 11
3.1 Product overview.................................................................................................................... 11
3.2 SELECT/SET button .............................................................................................................. 16
3.3 LED display............................................................................................................................ 18
3.3.1 The "RM" LED for the "redundancy manager" function............................................................ 18
3.3.2 The "SB" LED for the standby function ................................................................................... 18
3.3.3 The "F" LED for the fault status .............................................................................................. 19
3.3.4 "DM1" and "DM2" LEDs for the display mode ......................................................................... 19
3.3.5 "L1" and "L2" LEDs for the power supply ................................................................................ 20
3.3.6 Port P1, P2, ... LEDs for the port status .................................................................................. 22
3.4 C-PLUG / KEY-PLUG............................................................................................................. 24
3.4.1 Function of the C-PLUG/KEY-PLUG....................................................................................... 24
3.4.2 Removal and insertion of the C-PLUG/KEY-PLUG ................................................................. 25
3.5 Combo ports .......................................................................................................................... 27
4 Assembling................................................................................................................................. 29
4.1 Safety notices for installation .................................................................................................. 29
4.2 Types of installation................................................................................................................ 31
4.3 19" rack mounting .................................................................................................................. 31
4.4 Desktop operation with adhesive feet ..................................................................................... 33
4.5 Four-point mounting ............................................................................................................... 34
4.6 Plugging and pulling MM900 media modules .......................................................................... 36
4.7 Inserting and removing media pluggable transceivers............................................................. 40
4.7.1 Notes on inserting/removing pluggable transceivers ............................................................... 40
4.7.2 Inserting an SFP / SFP+ transceiver....................................................................................... 41
4.7.3 Removing an SFP / SFP+ transceiver..................................................................................... 41
4.8 Mounting power supply units .................................................................................................. 42
4.8.1 19" rack mounting of the PS598-1 power supply unit .............................................................. 42
4.8.2 Mounting the PS598-1 power supply unit on the rear panel of modular device ........................ 43
5 Connecting ................................................................................................................................. 45
5.1 Commissioning....................................................................................................................... 45
5.2 24 VDC power supply............................................................................................................. 48
5.3 100 to 240 VAC power supply ................................................................................................ 50
5.3.1 Power supply for a SCALANCE XR524-8C............................................................................. 50

Table of contents
SCALANCE XR-500
4Operating Instructions, 05/2014, A5E03275845-05
5.3.2 Power supply using the PS598-1 power supply unit.................................................................52
5.3.2.1 Connectors of the PS598-1 power supply unit .........................................................................52
5.3.2.2 LED display of the PS598-1 power supply unit.........................................................................56
5.4 Signaling contact.....................................................................................................................57
5.5 Serial interface ........................................................................................................................59
5.6 Out-of-band interface ..............................................................................................................61
5.7 Block architecture of the XR552-12M ......................................................................................62
5.8 Functional ground ...................................................................................................................63
6 Uninstalling ................................................................................................................................ 65
7 Upkeep and maintenance ............................................................................................................ 67
7.1 Changing the fan unit ..............................................................................................................67
7.2 Changing the filter pad ............................................................................................................70
7.3 Downloading new firmware using TFTP without WBM and CLI ................................................72
7.4 Restoring the factory settings ..................................................................................................73
8 Technical data ............................................................................................................................ 75
8.1 Technical specifications of the SCALANCE XR524-8C............................................................75
8.2 Technical specifications of the SCALANCE XR528-6M............................................................78
8.3 Technical specifications of the SCALANCE XR552-12M..........................................................80
8.4 Switching properties................................................................................................................82
9 Dimension drawings.................................................................................................................... 83
9.1 SCALANCE XR524-8C ...........................................................................................................83
9.2 SCALANCE XR528-6M...........................................................................................................84
9.3 SCALANCE XR552-12M.........................................................................................................85
9.4 Mounting brackets for use on ships .........................................................................................86
10 Certification ................................................................................................................................ 93
10.1 FDA and IEC marks ................................................................................................................97
10.2 Mechanical stability (in operation)............................................................................................98
Index ......................................................................................................................................... 99

SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 5
Introduction
1
Purpose of the Operating Instructions
These operating instructions support you when installing and connecting up devices of the
SCALANCE XR-500 product line.
The configuration and the integration of the device in a network are not described in these
operating instructions.
Validity of the Operating Instructions
These operating instructions apply to the following devices:
●SCALANCE XR524-8C
●SCALANCE XR528-6M
●SCALANCE XR552-12M
Designations used
Classification
Description
Terms used
Product line If information applies to all product groups within the product line, the term
SCALANCE XR-500 is used.
SCALANCE XR-500
Device If information relates to a specific device, the device name is used. SCALANCE XR524-8C
SCALANCE XR528-6M
SCALANCE XR552-12M
Variant For a variant of the device, the device name has the appropriate variant
added to it in brackets.
SCALANCE XR524-8C
(2 x 24 VDC)
Documentation on configuration
You will find detailed information on configuring the devices in the following configuration
manuals:
●SCALANCE XM-400/XR-500 Web Based Management
●SCALANCE XM-400/XR-500 Command Line Interface

Introduction
SCALANCE XR-500
6Operating Instructions, 05/2014, A5E03275845-05
You will find the configuration manuals here:
●On the data medium that ships with some products:
–Product CD / product DVD
–SIMATIC NET Manual Collection
●On the Internet pages of Siemens Industry Online Support.
(http://support.automation.siemens.com/WW/view/en/48803858/130000)
Further documentation
In the system manuals "Industrial Ethernet / PROFINET Industrial Ethernet" and "Industrial
Ethernet / PROFINET passive network components", you will find information on other
SIMATIC NET products that you can operate along with the devices of this product line in an
Industrial Ethernet network.
There, you will find among other things optical performance data of the communications
partner that you require for the installation.
You will find the system manuals here:
●On the data medium that ships with some products:
–Product CD / product DVD
–SIMATIC NET Manual Collection
●On the Internet pages of Siemens Industry Online Support under the following entry IDs:
–27069465 (http://support.automation.siemens.com/WW/view/en/27069465)
Industrial Ethernet / PROFINET Industrial Ethernet System Manual
–84922825 (http://support.automation.siemens.com/WW/view/en/84922825)
Industrial Ethernet / PROFINET - Passive network components System Manual
SIMATIC NET manuals
You will find SIMATIC NET manuals on the Internet pages of Siemens Industry Online
Support:
●using the search function:
Link to Siemens Industry Online Support
(http://support.automation.siemens.com/WW/view/en)
Enter the entry ID of the relevant manual as the search item.
●In the navigation panel on the left hand side in the area "Industrial Communication":
Link to the area "Industrial Communication"
(http://support.automation.siemens.com/WW/view/en/10805878/130000)
Go to the required product group and make the following settings:
tab "Entry list", Entry type "Manuals"

Introduction
SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 7
You will find the documentation for the SIMATIC NET products relevant here on the data
medium that ships with some products:
●Product CD / product DVD
●SIMATIC NET Manual Collection
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 entry ID:
50305045 (http://support.automation.siemens.com/WW/view/en/50305045)
Catalogs
You will find the order numbers for the Siemens products of relevance here in the following
catalogs:
●SIMATIC NET Industrial Communication / Industrial Identification, catalog IK PI
●SIMATIC Products for Totally Integrated Automation and Micro Automation, catalog
ST 70
●Industry Mall - catalog and ordering system for automation and drive technology, Online
catalog
You can request the catalogs and additional information from your Siemens representative.
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, solutions, machines, equipment and/or networks. They are
important components in a holistic industrial security concept. With this in mind, Siemens’
products and solutions undergo continuous development. Siemens recommends strongly
that you regularly check for product updates.
For the secure operation of Siemens products and solutions, it is necessary to take suitable
preventive action (e.g. cell protection concept) and integrate each component into a holistic,
state-of-the-art industrial security concept. Third-party products that may be in use should
also be considered. For more information about industrial security, visit
http://www.siemens.com/industrialsecurity.
To stay informed about product updates as they occur, sign up for a product-specific
newsletter. For more information, visit http://support.automation.siemens.com.

Introduction
SCALANCE XR-500
8Operating Instructions, 05/2014, A5E03275845-05
Unpacking and 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
•Damage to the device and other components
Use only undamaged parts.
1. Make sure that the package is complete.
2. Check all the parts for transport damage.

SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 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".
General notices
WARNING
Restricted use of the device
Devices of the SCALANCE XR-500 product line must not be put into operation in nuclear
power plants or other nuclear facilities.
WARNING
Maximum ambient temperature
The operating temperature of a device of the SCALANCE XR-500 product line depends on
the ambient temperature.
For SCALANCE XR524-8C, the ambient temperature must not exceed 70 °C.
For SCALANCE XR528-6M and SCALANCE XR552-12M, the ambient temperature must
not exceed 60 °C.
WARNING
Suitable installation location
The installation location of a device of the SCALANCE XR-500 product line must be
selected so that only qualified service personnel or trained users have access to it.
Operation of a device of the SCALANCE XR-500 product line is permitted only when these
requirements are met.

Safety notes
SCALANCE XR-500
10 Operating Instructions, 05/2014, A5E03275845-05
NOTICE
Suitable fusing for the power supply cables
The current on the terminal may not exceed 25 A. Use a fuse, that protects against currents
> 25 A. The fuse must meet the following requirements:
In areas according to NEC or CEC:
•Suitable for DC (min. 60 V / 25 A)
•Breaking current at least 10 kA
•Approval according to ANSI/UL 248-1
•Suitable for the protection of DC power supply circuits
In other areas:
•Suitable for DC (min. 60 V / 25 A)
•Breaking current at least 10 kA
•Approval in compliance with IEC 60127-1 / EN 601127-1
•Breaking characteristics: B or C for circuit breakers and fuses
•Suitable for the protection of DC power supply circuits
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
WARNING
Opening the device
Do not open when energized. Note that this does not apply to opening the service panel in
the housing.
Safety notices when using the device according to Hazardous Locations (HazLoc)
If you use the device under HazLoc conditions you must also keep to the following safety
notices in addition to the general safety notices for protection against explosion:
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.

SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 11
Description of the device
3
3.1
Product overview
The type designation of a SCALANCE XR-500 IE switch is made up of several parts that
have the following meaning:
Order numbers
Device
Order number
Description
XR524-8C 6GK5 524-8GS00-2AR2 1 height unit, 8 combo ports, 2 x 24 VDC, connector for the power supply on
the front
6GK5 524-8GR00-2AR2 1 height unit, 8 combo ports, 2 x 24 VDC, connector for the power supply on
the front, layer 3 without KEY-PLUG
6GK5 524-8GS00-3AR2 1 height unit, 8 combo ports, 1 x 100 to 240 VAC, connector for the power
supply on the rear
6GK5 524-8GR00-3AR2 1 height unit, 8 combo ports, 1 x 100 to 240 VAC, connector for the power
supply on the rear, layer 3 without KEY-PLUG
6GK5 524-8GS00-4AR2 1 height unit, 8 combo ports, 2 x 100 to 240 VAC, connector for the power
supply on the rear
6GK5 524-8GR00-4AR2 1 height unit, 8 combo ports, 2 x 100 to 240 VAC, connector for the power
supply on the rear, layer 3 without KEY-PLUG
XR528-6M 6GK5 528-0AA00-2AR2 2, height units, 6 modules
6GK5 528-0AA00-2HR2
2, height units, 6 modules, cable outlet at rear
6GK5 528-0AR00-2AR2 2 height units, 6 modules, layer 3 without KEY-PLUG
6GK5 528-0AR00-2HR2
2 height units, 6 modules, cable outlet rear, layer 3 without KEY-PLUG
XR552-12M
6GK5 552-0AA00-2AR2
3, height units, 12 modules
6GK5 552-0AA00-2HR2
3, height units, 12 modules, cable outlet at rear
6GK5 552-0AR00-2AR2
3 height units, 12 modules, layer 3 without KEY-PLUG
6GK5 552-0AR00-2HR2
3 height units, 12 modules, cable outlet rear, layer 3 without KEY-PLUG

Description of the device
3.1 Product overview
SCALANCE XR-500
12 Operating Instructions, 05/2014, A5E03275845-05
Interfaces
Device
Total
usable
ports
Number of
slots for media
modules
Modular ports
using module
slots
Pluggable transceiver
slots
Electrical
connectors
Combo ports
SFP
SFP+
XR524-8C
24
-
-
8
-
24
8
XR528-6M
28
6
24
-
4
-
-
XR552-12M
52
12
48
-
4
-
-
Components of the product
The following components ship with a SCALANCE XR-500:
SCALANCE XR524-8C
SCALANCE XR528-6M
SCALANCE XR552-12M
Device with exchangeable medium
C-PLUG
●●●
Product DVD with documentation and
software
●●●
2 brackets for 19" rack installation
●
●
●
8 screws for mounting the fixing
brackets for 19" rack installation
M3 x 5 countersunk,
Drive: Torx
M3 x 6 countersunk,
Drive: Torx
M3 x 6 countersunk,
Drive: Torx
4 adhesive feet for desktop operation ●●●
2 mounting plates and 24 screws for
mounting the power supply units (M3 x 6
countersunk, drive: Torx)
- ●●
4-pin terminal block for the 24 VDC
power supply
With variants with
24 VDC
●●
2-pin terminal block for the signaling
contact
●●●
Connecting cable for the serial interface
with RJ-11 plug and 9-pin D-sub female
connector
●●●
Fan unit
-
FAN597-2
FAN597-1
Filter frame with filter pad
-
●
●
Covers for the interfaces of the SFP+
8
4
4
Dummy covers for the interfaces of the
media module slots
- 6 12
Labels for the slot numbers to identify
the MM900 media modules in use
- ●●
Note
When the modules ship, the media module slots are fitted with dummy covers.
Note
You will find detailed i
nformation on these products in the operating instructions on the
product DVD.

Description of the device
3.1 Product overview
SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 13
Accessories for the SCALANCE XR-500 product line
The following accessories are available for the SCALANCE XR-500 product line:
Power cable
Type
Description
Order number
Power cable
100 to 240 VAC, straight, 3 m
For Germany, France, Spain,
Netherlands, Belgium, Sweden,
Austria, Finland
6ES7 900-0AA00-0XA0
Power cable
100 to 240 VAC, straight, 3 m
For Great Britain 6ES7 900-0BA00-0XA0
Power cable
100 to 240 VAC, straight, 3 m
For Switzerland 6ES7 900-0CA00-0XA0
Power cable
100 to 240 VAC, straight, 3 m
For America 6ES7 900-0DA00-0XA0
Power cable
100 to 240 VAC, straight, 3 m
For Italy 6ES7 900-0EA00-0XA0
Power cable
100 to 240 VAC, straight, 3 m
For China 6ES7 900-0FA00-0XA0
SFP transceiver
Type
Order number
SFP991-1 * 6GK5 991-1AD00-8AA0
SFP991-LD *
6GK5 991-1AF00-8AA0
SFP991-LH+ * 6GK5 991-1AE00-8AA0
SFP991-1ELH200 *
6GK5 991-1AE30-8AA0
SFP992-1 6GK5 992-1AL00-8AA0
SFP992-1LD
6GK5 992-1AM00-8AA0
SFP992-1LH
6GK5 992-1AN00-8AA0
SFP992-1LH+
6GK5 992-1AP00-8AA0
SFP992-1ELH
6GK5 992-1AQ00-8AA0
* Cannot be operated in SFP+ slots.
Note
Restriction for pluggable transceivers for SCALANCE XR524-8C (2 x 24 VDC)
If you use
transceivers of the types LH, LH+, ELH or ELH200 with a SCALANCE XR524-8C
(2 x 24 VDC), the maximum ambient temperature is reduced to 60
℃.
For the values of the ambient temperature without pluggable transceivers, refer to the
section "
Technical data (Page 75)".

Description of the device
3.1 Product overview
SCALANCE XR-500
14 Operating Instructions, 05/2014, A5E03275845-05
Note
No far-end fault detection for an SFP transceiver in the SFP+ slot
If you use an SFP transceiver in an SFP+ slot, no far
-end fault detection is possible for this
interface.
KEY-PLUG
Type
Order number
KEY-PLUG XR-500
6GK5 905-0PA00
Accessories for the devices SCALANCE XR528-6M and SCALANCE XR552-12M
The following additional accessories are available for devices SCALANCE XR528-6M and
SCALANCE XR552-12M:
Media modules
Type
Order number
MM991-4
6GK5 991-4AB00-8AA0
MM991-4LD
6GK5 991-4AC00-8AA0
MM992-4
6GK5 992-4AL00-8AA0
MM992-4LD
6GK5 992-4AM00-8AA0
MM992-4CU 6GK5 992-4SA00-8AA0
MM992-4CUC
6GK5 992-4GA00-8AA0
MM992-4PoE
6GK5 992-4QA00-8AA0
MM992-4PoEC
6GK5 992-4RA00-8AA0
MM992-4SFP
6GK5 992-4AS00-8AA0
SFP+ transceiver
Type
Order number
SFP993-1
6GK5 993-1AT00-8AA0
SFP993-1LD
6GK5 993-1AU00-8AA0
SFP993-1LH
6GK5 993-1AV00-8AA0

Description of the device
3.1 Product overview
SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 15
Fan unit
NOTICE
Operation only with fan unit
Use the devices SCALANCE XR528-6M and SCALANCE XR552-12M only with a correctly
fitted fan unit. Operation without the fan is not possible and would damage the device.
Type
Order number
FAN597-1 for SCALANCE XR552-12M
6GK5 597-1AA00-8AA0
FAN597-2 for SCALANCE XR528-6M
6GK5 597-2AA00-8AA0
Power supply units
The power supply units allow operation with input voltages of 100 to 240 VAC.
Type
Order number
PS598-1 (100 to 240 VAC / 300 W)
6GK5 598-1AA00-3AA0

Description of the device
3.2 SELECT/SET button
SCALANCE XR-500
16 Operating Instructions, 05/2014, A5E03275845-05
3.2
SELECT/SET button
Position
With a SCALANCE XR-500, the "SELECT/SET" button is on the front of the housing. The
"SELECT/SET" button has several functions that are described below.
Figure 3-1 SELECT/SET button on the SCALANCE XR524-8C
Figure 3-2 SELECT/SET button on the SCALANCE XR552-12M SCALANCE XR528-6M is
analogous.
Setting the display mode
By pressing the button briefly, you change to the display mode of the LED display. You will
find detailed information on the display modes in the sections ""DM1" and "DM2" LEDs for
the display mode (Page 19)" and "Port P1, P2, ... LEDs for the port status (Page 22)".
Resetting the device to factory defaults
If you reset, all the changes you have made will be overwritten by factory defaults.
To reset the device to the factory defaults, follow the steps below:
1. Switch to display mode A.
Display mode A is active when the LEDs "DM1" and "DM2" are off.
When the LEDs "DM1" and "DM2" are lit or flashing, you need to press the
"SELECT/SET" button several times briefly until the "DM1" and "DM2" LEDs are off.
If you do not press the "SELECT/SET" button for longer than 1 minute, the device
automatically switches to display mode A.
2. Hold down the "SELECT/SET" button for 12 seconds.
After 9 seconds, the "DM1" and "DM2" LEDs start to flash for 3 seconds. At the same
time, the port LEDs light up one after the other.
If you release the button before the 12 seconds have elapsed, the reset is canceled.

Description of the device
3.2 SELECT/SET button
SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 17
CAUTION
Restart with the SELECT/SET button disabled for "Restore Factory Defaults"
If you have disabled the SELECT/SET button for "Restore Factory Defaults" in the
configuration, this does not apply during the startup phase. When you restart after cycling
power, the configuration can nevertheless be deleted using this button. This action cannot
be undone and you then need to reload the device configuration. This can lead to
disturbances and failures in the corresponding network area.
Defining 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 displayed as errors/faults.
To define the fault mask, follow the steps below:
1. Change to display mode D.
Display mode D is active when the "DM1" and "DM2" LEDs are lit green.
If a different display mode is active, press the "SET/SELECT" button several times briefly,
until the "DM1" and "DM2" LEDs are lit green.
2. Hold down the "SELECT/SET" button for 5 seconds.
After 2 seconds, the "DM1" and "DM2" LEDs start to flash for 3 seconds. At the same
time the port LEDs go on one after the other.
After you have pressed the button for 5 seconds, the current settings are stored as the
"good status".
If you release the button before the 5 seconds are up, the previous fault mask is retained.
Enabling/disabling the redundancy manager
To enable/disable the redundancy manager, follow the steps below:
1. Change to display mode B.
Display mode B is active when the "DM1" LED is lit green and the and "DM2" LED is off.
If a different display mode is active, press the "SET/SELECT" button several times briefly,
until the "DM1" LED is lit green and the "DM2" LED is off.
2. Hold down the "SELECT/SET" button for 5 seconds.
After 2 seconds, the "DM1", "DM2" and "RM" LEDs start to flash for 3 seconds. At the
same time, the port LEDs light up one after the other.
If you release the button before the 5 seconds have elapsed, the action is canceled.
The result of the action depends on the initial situation:
–
Initial situation:
The redundancy manager and media redundancy are disabled.
Result:
After enabling the redundancy manager, media redundancy is also enabled.
–
Initial situation:
The redundancy manager and media redundancy are enabled.
Result:
After disabling the redundancy manager, media redundancy remains enabled.

Description of the device
3.3 LED display
SCALANCE XR-500
18 Operating Instructions, 05/2014, A5E03275845-05
3.3
LED display
3.3.1
The "RM" LED for the "redundancy manager" function
The "RM" LED indicates whether or not the device is a redundancy manager and whether or
not the ring is operating free of error.
LED color
LED status
Meaning
-
Off
The device is not a redundancy manager.
Green On The device is a redundancy manager.
The ring is working without problems, monitoring is activated.
Green Flashing The device is a redundancy manager.
An interruption has been detected on the ring and the device
has switched through.
3.3.2
The "SB" LED for the standby function
The "SB" 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
Flashing
The standby function is enabled. The standby section is active.

Description of the device
3.3 LED display
SCALANCE XR-500
Operating Instructions, 05/2014, A5E03275845-05 19
3.3.3
The "F" LED for the fault status
The "F" LED shows the fault/error status of the device.
Meaning during device startup
LED color
LED status
Meaning during device startup
-
Off
Device startup was completed successfully.
Red
On
Device startup is not yet completed or errors have occurred.
Red
Flashing
There are errors in the firmware.
Meaning during operation
LED color
LED status
Meaning during operation
-
Off
The device is operating free of errors.
Red On The device has detected a problem. The signaling contact has
opened.
3.3.4
"DM1" and "DM2" LEDs for the display mode
The "DM1" and "DM2" LEDs indicate which display mode is set.
There are 5 display modes (A, B, C, D, and E). Display mode A is the default mode.
Depending on the set display mode, the "L1", "L2" LEDs and the port LEDs show different
information.
LED color
LED status
Meaning
DM1 LED
DM2 LED
-
Off
Display mode A
Green
On
Off
Display mode B
Green
Off
On
Display mode C
Green
On
Display mode D
Green
Flashing
Off
Display mode E

Description of the device
3.3 LED display
SCALANCE XR-500
20 Operating Instructions, 05/2014, A5E03275845-05
Setting the display mode
To set the required display mode, press the "SELECT/SET" button.
If you do not press the "SELECT/SET" button for longer than 1 minute, the device
automatically changes to display mode A.
Pressing SELECT/SET button
starting at display mode A
LED status
Display mode
DM1
DM2
-
Off
Display mode A
Press once
On
Off
Display mode B
Press twice
Off
On
Display mode C
Press three times
On
Display mode D
Press four times
Flashing
Off
Display mode E
3.3.5
"L1" and "L2" LEDs for the power supply
The "L1" and "L2" LEDs indicate the current range of the power supply at connectors L1 and
L2.
The meaning of the "L1" and "L2" LEDs depends on the set display mode, see section
""DM1" and "DM2" LEDs for the display mode (Page 19)".
Voltage limit
For devices with 24 VDC, the voltage limit is 17 VDC.
With devices with 100 to 240 VAC, the voltage limit is 90 VAC.
Meaning in display modes A, B, C and E
In display modes A, B, C and D, from the "L1" and "L2" LEDs you can see whether the
power supply is higher or lower than a certain voltage limit.
Table 3- 1 For devices with a 24 VDC power supply
L1/L2 LED
L1/L2 connector
LED color
LED status
-
Off
Power supply lower than 17 VDC
Green
On
Power supply higher than 17 VDC
Table 3- 2 Power supply for devices with 100 to 240 VAC
L1/L2 LED
L1/L2 connector
LED color
LED status
-
Off
Power supply lower than 90 VAC
Green
On
Power supply higher than 90 VAC