Siemens S7-1200 - Page 15

Application and properties
1.3 Other services and properties
CP 1243-7 LTE
Operating Instructions, 01/2015, C79000-G8976-C381-01
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Time-of-day synchronization
– When telecontrol communication is enabled, the CP obtains its local time of day as
UTC time from the partner (TCSB). The time of day can be read from the CPU. The
mechanisms are described in the STEP 7 information system.
For information on the format of the time stamp, refer to the section Datapoint types
(Page 48).
If telecontrol communication is disabled, the time of day can be obtained from an NTP
server.
– If the security functions are enabled, the secure method NTP (secure) can be used.
For more information, refer to the section Time-of-day synchronization (Page 64).
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Access to the Web server of the CPU
With the aid of the Web server of the CPU, you can read out module data from the
station.
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Data buffering: Storage of event data
If a connection fails, the CP can buffer the data of events of different classes and transfer
them bundled to the telecontrol server.
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Data transfer is on request or triggered
The telecontrol communication with TCSB is triggered in two ways:
– After a request by TCSB or an OPC client connected to TCSB
– Triggered by various selectable criteria
Logging status data and its transfer to the telecontrol server
For example:
– Data volumes transferred
– ID of the wireless cell in the area of the station
– GSM signal strength
– Communication status
etc.
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Analog value processing
Analog values can be preprocessed on the CP according to various methods.
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Diagnostics SMS message
At the request of a mobile phone, the CP sends an SMS message with diagnostics data
to this mobile phone.