Siemens S7-1200 TELECONTROL Operating Instructions Manual page 107

● Date and time of the last dial-in to the mobile wireless network
The data is specified in the ISO 8601 format ("Attach: YYYY-MM-DD hh:mm:ss").
If the time-of-day of the CP has not been synchronized at the time of the dial-in, the time
of the measurement since the beginning of the default time-of-day of the CP (01.01.2009)
is transferred.
If the last attempted dial-in to the mobile wireless network was not successful, "Attach: -"
is sent.
● Name of the current mobile wireless network
● IP address of the CP
● Signal strength of the mobile wireless network
– good: Good signal quality (-73 ... -51 dBm)
– medium: Medium signal quality (-89 ... -74 dBm)
– weak: Bad signal quality (-109 ... -90 dBm)
– no signal: Signal too weak to be received (≤ -110 dBm)
● Received Signal Strength Indication (RSSI)- Received field strength at the station
[0 ... 31]
● Status of the connection to the telecontrol server
If the data to be sent exceeds the default size of an SMS message, several SMS messages
are sent.
Diagnostics options of the telecontrol server
For telecontrol communication, TCSB provides several diagnostics options that you should
use if problems occur during productive operation.
If there are connection problems between the station and telecontrol server, you can check
the connection step-by-step using the following system tags:
● ConnectionState
● PLCConnected
● PLCCpuState
Failed mobile wireless transmission
If mobile wireless transmission is not working but all other settings and connections are
correct, check the external power supply of the CP.
CP 1242-7 GPRS V2
Operating Instructions, 10/2016, C79000-G8976-C311-02
Diagnostics and upkeep
6.2 Firmware download
107