Application and properties
1.4 Other properties of the CP
CP 1242-7
10
Operating Instructions, 09/2011, C79000-G8976-C247-02
1.4
Other properties of the CP
Other services and functions of the CP 1242-7
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Time-of-day synchronization of the CP via the Internet
You can set the time on the CP as follows:
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In "Telecontrol" mode, the time of day is transferred by the telecontrol server. The CP
uses this to set its time.
This time-of-day is adopted in the frames sent by the CP.
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In "GPRS direct" mode, the CP can request the time using NTP.
Make sure that your network provider supports NTP.
The NTP server and the time zone are specified during configuration.
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Buffering frames on the telecontrol server
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Increased availability thanks to the option of connecting to a substitute telecontrol server
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Optimized data volume (temporary connection)
As an alternative to a permanent connection to the telecontrol server, the CP can be
configured in STEP 7 with a temporary connection to the telecontrol server. In this case,
a connection to the telecontrol server is established only when required.
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Logging of a variety of data and its transfer to the telecontrol server, for example:
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Data volumes transferred
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ID of the wireless cell in the area of the station
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GSM signal strength
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Communication status
etc.
1.5
Performance data
Types of connection establishment
The number of connections depends on the type of connection establishment:
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Active connection establishment
The connection establishment is initiated by the local CPU.
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Passive connection establishment
The connection establishment is initiated by the communications partner.
