Siemens SIMATIC NET SCALANCE W720 User manual

SCALANCE W760/W720
SIMATIC NET
Industrial Wireless LAN
SCALANCE W760/W720
Operating Instructions
10/2019
C79000
-G8976-C322-11
Introduction
1
Security recommendations
2
Description of the device
3
Mounting
4
Connection
5
Upkeep and maintenance
6
Technical data
7
Dimension drawings
8
Approvals
9

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
C79000-G8976-C322-11
Ⓟ
11/2019 Subject to change
Copyright © Siemens AG 2014 - 2019.
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 W760/W720
Operating Instructions, 10/2019, C79000-G8976-C322-11 3
Table of contents
1 Introduction................................................................................................................................................ 5
1.1 Information on the Operating Instructions ................................................................................5
2 Security recommendations ........................................................................................................................ 7
3 Description of the device ......................................................................................................................... 13
3.1 Description of the device ........................................................................................................13
3.2 Structure of the type designation............................................................................................14
3.3 Components of the product ....................................................................................................15
3.4 Accessories.............................................................................................................................16
3.4.1 Flexible connecting cables and antennas...............................................................................18
3.4.1.1 Flexible connecting cables......................................................................................................18
3.4.1.2 Antennas.................................................................................................................................19
3.5 LED display.............................................................................................................................22
3.6 Reset button............................................................................................................................25
4 Mounting.................................................................................................................................................. 27
4.1 Installing on a DIN rail / removing...........................................................................................28
5 Connection .............................................................................................................................................. 31
5.1 Lightning protection, power supply and grounding.................................................................32
5.2 Power supply ..........................................................................................................................35
5.3 Ethernet ..................................................................................................................................36
5.4 Antenna connector..................................................................................................................37
5.5 Grounding ...............................................................................................................................39
6 Upkeep and maintenance........................................................................................................................ 41
6.1 Device configuration with PRESET-PLUG .............................................................................41
6.2 Restoring the factory settings .................................................................................................44
6.3 Firmware update via WBM or CLI not possible ......................................................................45
7 Technical data ......................................................................................................................................... 47
8 Dimension drawings ................................................................................................................................ 51
9 Approvals................................................................................................................................................. 53
Index........................................................................................................................................................ 55

Table of contents
SCALANCE W760/W720
4Operating Instructions, 10/2019, C79000-G8976-C322-11

SCALANCE W760/W720
Operating Instructions, 10/2019, C79000-G8976-C322-11 5
Introduction
1
1.1 Information on the Operating Instructions
Validity of the Operating Instructions{xe "Article numbers"}{xe "Documentation on the CD"}
These operating instructions cover the following products:
Product Article number Article number
US version
Article number
Israel version
Access point
SCALANCE W761-1 RJ-45
6GK5761-1FC00-0AA0
6GK5761-1FC00-0AB0
-
Ethernet client modules
SCALANCE W722-1 RJ-45
(iFeatures)
6GK5722-1FC00-0AA0 6GK5722-1FC00-0AB0 6GK5722-1FC00-0AC0
SCALANCE W721-1 RJ-45
6GK5721-1FC00-0AA0
6GK5721-1FC00-0AB0
-
These operating instructions apply to the following software version:
●SCALANCE W760/W720 with firmware as of version 6.3
Purpose of the Operating Instructions
Using the Operating Instructions, you will be able to install and connect the SCALANCE
W760/W720 correctly. The configuration and the integration of the device in a WLAN are not
described in these instructions.
Documentation on the accompanying DVD
You can find detailed information about configuration in the SCALANCE W700 configuration
manuals on the accompanying DVD under the file name:
PH_SCALANCE-W760-W720-WBM_76.pdf and PH_SCALANCE-W760-W720-CLI_76.pdf
Note
Make sure that you read the explanations and instructions in the README.txt file
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.

Introduction
1.1 Information on the Operating Instructions
SCALANCE W760/W720
6Operating Instructions, 10/2019, C79000-G8976-C322-11
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be
connected to an enterprise network or the internet if and to the extent such a connection is
necessary and only when appropriate security measures (e.g. firewalls and/or network
segmentation) are in place.
For additional information on industrial security measures that may be implemented, please
visit https://www.siemens.com/industrialsecurity
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customers’ exposure
to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under https://www.siemens.com/industrialsecurity
Recycling and disposal
The products are low in pollutants, can be recycled and meet the requirements of the WEEE
directive 2012/19/EU for the disposal of electrical and electronic equipment.
Do not dispose of the products at public disposal sites.
For environmentally friendly recycling and the disposal of your old device contact a certified
disposal company for electronic scrap or your Siemens contact (Product return
(https://support.industry.siemens.com/cs/ww/en/view/109479891)).
Note the different national regulations.
Trademarks
The following and possibly other names not identified by the registered trademark sign ®are
registered trademarks of Siemens AG:
SIMATIC NET, SCALANCE, C-PLUG, RCoax

SCALANCE W760/W720
Operating Instructions, 10/2019, C79000-G8976-C322-11 7
Security recommendations
2
To prevent unauthorized access, note the following security recommendations.
General
●You should make regular checks to make sure that the device meets these
recommendations and/or other security guidelines.
●Evaluate your plant as a whole in terms of security. Use a cell protection concept with
suitable products (https://www.industry.siemens.com/topics/global/en/industrial-
security/pages/default.aspx).
●When the internal and external network are disconnected, an attacker cannot access
internal data from the outside. Therefore operate the device only within a protected
network area.
●For communication via non-secure networks use additional devices with VPN functionality
to encrypt and authenticate the communication.
●Terminate management connections correctly (WBM. Telnet, SSH etc.).
Physical access
●Restrict physical access to the device to qualified personnel.
●The memory card or the PLUG (C-PLUG, KEY-PLUG, security PLUG) contains sensitive
data such as certificates, keys etc. that can be read out and modified.
Software (security functions)
●Keep the firmware up to date. Check regularly for security updates of the product.
You will find information on this on the Internet pages "Industrial Security
(https://www.siemens.com/industrialsecurity)".
●Inform yourself regularly about security advisories and bulletins published by Siemens
ProductCERT (https://www.siemens.com/cert/en/cert-security-advisories.htm).
●Only activate protocols that you really require to use the device.
●Use the security functions such as address translation with NAT (Network Address
Translation) or NAPT (Network Address Port Translation) to protect receiving ports from
access by third parties.
●Restrict access to the device with a firewall or rules in an access control list (ACL -
Access Control List).
●If RADIUS authentication is via remote access, make sure that the communication is
within the secured network area or is via a secure channel.

Security recommendations
SCALANCE W760/W720
8Operating Instructions, 10/2019, C79000-G8976-C322-11
●The option of VLAN structuring provides good protection against DoS attacks and
unauthorized access. Check whether this is practical or useful in your environment.
●Use a central logging server to log changes and access operations. Operate your logging
server within the protected network area and check the logging information regularly.
●Use WPA2/ WPA2-PSK with AES to protect the WLAN. If iPCF or iPCF-MC is used, use
the AES encryption.
Passwords
●Define rules for the use of devices and assignment of passwords.
●Regularly update passwords and keys to increase security.
●Change all default passwords for users before you operate the device.
●Only use passwords with a high password strength. Avoid weak passwords for example
password1, 123456789, abcdefgh.
●Make sure that all passwords are protected and inaccessible to unauthorized personnel.
●Do not use the same password for different users and systems or after it has expired.
Keys and certificates
This section deals with the security keys and certificates you require to set up HTTPS
(HyperText Transfer Protocol Secured Socket Layer).
●We strongly recommend that you create your own HTTPS certificates and make them
available.
There are preset certificates and keys on the device. The preset and automatically
created HTTPS certificates are self-signed.
We recommend that you use HTTPS certificates signed either by a reliable external or by
an internal certification authority. The HTTPS certificate checks the identity of the device
and controls the encrypted data exchange. You can install the HTTPS certificate via the
WBM (System > Load and Save).
●Handle user-defined private keys with great caution if you use user-defined SSH or SSL
keys.
●Use the certification authority including key revocation and management to sign the
certificates.
●Verify certificates and fingerprints on the server and client to avoid "man in the middle"
attacks.
●We recommend that you use certificates with a key length of 2048 bits.
●Change keys and certificates immediately, if there is a suspicion of compromise.

Security recommendations
SCALANCE W760/W720
Operating Instructions, 10/2019, C79000-G8976-C322-11 9
Secure/non-secure protocols and services
●Avoid and disable non-secure protocols, for example Telnet and TFTP. For historical
reasons, these protocols are still available, however not intended for secure applications.
Use non-secure protocols on the device with caution.
●Check whether use of the following protocols and services is necessary:
–Non-authenticated and unencrypted ports
–LLDP
–Syslog
–DHCP options 66/67
–TFTP
●The following protocols provide secure alternatives:
–SNMPv1/v2c →SNMPv3
Check whether use of SNMPv1/v2c is necessary. SNMPv1/v2c is classified as non-
secure. Use the option of preventing write access. The product provides you with
suitable setting options.
If SNMP is enabled, change the community names. If no unrestricted access is
necessary, restrict access with SNMP.
Use SNMPv3 in conjunction with passwords.
–HTTP →HTTPS
–Telnet →SSH
–TFTP →SFTP
●Use secure protocols when access to the device is not prevented by physical protection
measures.
●To prevent unauthorized access to the device or network, take suitable protective
measures against non-secure protocols.
●If you require non-secure protocols and services, operate the device only within a
protected network area.
●Restrict the services and protocols available to the outside to a minimum.
●For the DCP function, enable the "Read Only" mode after commissioning.
List of available services
The following is a list of all available services and their ports through which the device can be
accessed.
The table includes the following columns:
●Service
The services that the device supports
●Default port status
This is the status of the port in the delivery state (factory setting).

Security recommendations
SCALANCE W760/W720
10 Operating Instructions, 10/2019, C79000-G8976-C322-11
●Configurable port/service
Indicates whether the port number or the service can be configured via WBM / CLI.
●Authentication
Specifies whether the communication partner is authenticated.
If optional, the authentication can be configured as required.
●Encryption
Specifies whether the transfer is encrypted.
If optional, the encryption can be configured as required.
Service
Protocol/port num-
ber
Default port
status
Configurable
Authentication
Encryption
Port
Service
DHCP client
UDP/68
Outgoing only
--
✓
--
--
DHCP server
UDP/67
Closed
--
✓
--
--
DNS client TCP/53
UDP/53
Outgoing only -- ✓-- --
EthernetIP TCP/44818,
UDP/2222
UDP/44818
Closed -- ✓-- --
HTTP
TCP/80
Open
✓
✓
✓
--
HTTPS
TCP/443
Open
✓
✓
✓
✓
NTP Client
UDP/123
Outgoing only
✓
✓
--
--
PROFINET UDP/34964
UDP/49154
UDP/49155
Open -- ✓-- --
RADIUS
UDP/1812
Closed
✓
✓
✓
--
Remote Capture
TCP/2002
Closed
--
✓
--
--
SFTP client
TCP/22
Closed
✓
✓
✓
✓
SMTP client
TCP/25
Closed
✓
✓
--
--
SNMPv1/V2c
UDP/161
Open
✓
✓
--
--
SNMPv3
UDP/161
Open
✓
✓
Optional
Optional
SNMP traps
UDP/162
Outgoing only
--
✓
--
--
SNTP Client
UDP/123
Outgoing only
✓
✓
--
--
SSH
TCP/22
Open
✓
✓
✓
✓
Syslog Client
UDP/514
Closed
✓
✓
--
--
Telnet
TCP/23
Open
✓
✓
✓
--
TFTP client UDP/69 Closed ✓✓-- --
DCP
--
Open
--
✓
--
--
LLDP
--
Open
--
✓
--
--