Properties of the SINAUT components
1.5 Mobile wireless components
SINAUT ST7 station control system
System Manual, 09/2016, C79000-G8976-C178-10
57
1.5
Mobile wireless components
1.5.1
Areas of application
Options for data transmission via mobile wireless with SINAUT
Wherever no other transmission medium such as a dedicated line or telephone network is
available and where the setting up of a separate wireless network would involve high costs,
data transmission using a mobile wireless network is a practical alternative.
This is, of course, possible only when there is an adequately strong GSM signal at the
relevant location. The latest SINAUT quadband mobile wireless modem makes operation in
the GSM networks available worldwide(850, 900, 1800 and 1900 MHz range).
SINAUT ST7 provides two options for data transmission over mobile wireless:
●
With the GSM modem MD720
–
Data transmission on an "as necessary" basis by establishing a dial-up connection via
a mobile wireless network (CSD: Circuit Switched Data)
Dial-up connections are charged on a pay-by-time basis.
–
Data transmission with GPRS in a mobile wireless network
Authentication and encryption are based on the MSC protocol. Charges are generally
on a pay-by-volume basis.
With both transmission methods, the transmission of SMS messages to standby
personnel is also possible. Charges are based on the number of sent SMS messages.
For the manual see /2/ (Page 272).
●
With the 2.5G router SCALANCE M874
Permanent online connection between station and control center using the GPRS service
of a mobile wireless network provider. Data can be transmitted immediately at any time.
Although permanently online, only the volume of transmitted data is charged.
To communicate with remote devices, the SCALANCE M874 establishes a VPN tunnel
and encrypts according to the IPsec protocol.
For the manual see /3/ (Page 272).
Содержание SIMATIC NET TeleControl SINAUT ST7
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