Siemens Welding System ST PCS 7 User Manual

Industrial Ethernet

Siemens ST PCS 7 · November 2007

9

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SIMATIC PCS 7 allows you to integrate mobile or stationary 

remote clients into the OS-LAN (terminal bus) via a SCALANCE 

W788-1PRO access point. 
The following applications can be implemented in this manner:
• Use of additional remote OS clients (1 or 2 on IWLAN)
• Linking of Web clients to a SIMATIC PCS 7 Web server (1 or 

2 on IWLAN)

• Remote access to an engineering station with application of 

Remote Desktop (Windows XP or Server 2003 operating sys-

tem) or PC Anywhere, e.g. during commissioning

Mobile remote clients (e.g. notebooks) possessing a WLAN in-

terface can communicate with the access point via it. Stationary 

remote clients in a desktop/tower housing (SIMATIC PCS 7 In-

dustrial Workstations) require a SCALANCE W746-1PRO Ether-

net client module for the IWLAN communication with the access 

point.
SCALANCE W746-1PRO Ethernet client module and 

SCALANCE W788-1PRO access point are both very rugged, 

use state-of-the-art authentication and encryption procedures, 

and guarantee high reliability of the radio channel.

:

Please note that Industrial Wireless LAN is not approved of as a terminal 

bus (OS-LAN) or plant bus of SIMATIC PCS 7.

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The SCALANCE W746-1PRO Ethernet client module is highly 

suitable for integrating devices with an Industrial Ethernet con-

nection into Industrial Wireless LAN (IWLAN) radio networks with 

reliable communication. The SCALANCE W746-1PRO Ethernet 

client module handles the radio connection for a maximum of 

eight connected devices with Ethernet interface. If one of the 

connected devices is exchanged, the Ethernet client module 

recognizes this immediately and administers the new address.
Special features of the SCALANCE W746-1PRO Ethernet client 

module
• Versatile power supply facilities (operation on 100 V to 240 V 

AC network with PS791-1PRO power supply)

• Antenna diversity for reliable reception in complex radio envi-

ronments with two ANT795-4MR omnidirectional antennas 

screwed onto the housing, can be replaced by other types 

from the SCALANCE W700 range

• Transmission rate up to 54 Mbit/s at 2.4 GHz and 5 GHz with 

radio approval in more than 30 countries

• Conforms to the IEEE 802.11b/g and IEEE 802.11a standards
• High reliability through reservation of data transfer rate with 

IWLAN communication with SCALANCE W788-1PRO access 

point

• WPA and 128-bit encryption (AES) for high security against il-

legal access

• Rugged metal enclosure resistant to shock and vibration, and 

with IP65 dust protection 

• Suitable for ambient temperatures from -20 to +60°C (resistant 

to condensation)

For further information and detailed technical specifications, re-

fer to Catalog IK PI, the A&D Mall or Catalog CA 01 under "Com-

munication/networks, SIMATIC NET communication systems, In-

dustrial mobile communication".

SCALANCE 

X414-3 

SCALANCE 
X204-2/X208 

OS-LAN

(terminal bus)

PCS 7 
Web server 

OS clients 

Redundant 
OS server 

Engineering station

Access point 

SCALANCE W788-1PRO 

Ethernet 
Client module 
SCALANCE 
W746-1PRO 

Stationary 
remote client 

Mobile remote client
with WLAN interface

© Siemens AG 2007