Application and properties
1.2 Applications
CP 1242-7
8
Operating Instructions, 09/2011, C79000-G8976-C247-02
1.2
Applications
The CP 1242-7 is intended for use in an industrial environment. The following applications
are supported by the CP:
Telecontrol applications
●
Sending messages by SMS
The function is not dependent on the operating mode of the CP.
Via the CP 1242-7, the CPU of a remote S7-1200 station can receive SMS messages
from the GSM network or send messages by SMS to a configured mobile phone or an
S7-1200.
●
Communication with a control center
The CP is configured in "Telecontrol" mode.
Remote S7-1200 stations communicate via the GSM network and the Internet with a
telecontrol server in the master station. The telecontrol server communicates with a
higher-level control system using the integrated OPC server function.
●
Inter-station communication between S7-1200 stations via a GSM network
Depending on the GSM service being used and the mode of the CP, the inter-station
communication between remote stations with a CP 1242-7 will be handled in different
ways:
–
Indirect communication via a master station ("Telecontrol" mode)
In this configuration, connections between S7-1200 stations and the telecontrol server
are established in the master station. The telecontrol server forwards the messages
between the stations.
–
Direct communication between stations ("GPRS direkt" mode)
The CP requires a fixed IP address to be assigned by the GSM network provider.
TeleService via GPRS
A TeleService connection can be established between an engineering station with STEP 7
installed on it and a remote S7-1200 station via the GSM network (as of STEP 7 V11.0 SP1).
For STEP 7 V11.0 SP1, you also require support package "CP 1242-7" (HSP0003001).
You can use the TeleService connection for the following purposes:
●
Downloading project or program data from the STEP 7 project to the station
●
Querying diagnostics data on the station
With TeleService via GPRS, a switching station is required between the remote station and
engineering Station. This switching station can be a telecontrol server or, if there is no
telecontrol server in the configuration, a TeleService gateway. You will find detailed
information about both systems in the documentation , see References.
Other connections are not interrupted by a TeleService connection. You will find examples of
the structure in the section Configuration examples (Page 14).
