Siemens S7-1200 Operating Instructions Manual page 107

● 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 1243-7 LTE
Operating Instructions, 01/2015, C79000-G8976-C381-01
Diagnostics and upkeep
6.1 Diagnostics options
107