Siemens CP 1243-7 LTE Operating Instructions Manual page 14

Application and properties
1.2 Communications services
Direct communication via Open User Communication (OUC)
The program blocks of Open User Communication provide the CP with the following
communication options:
● Communication between S7-1200 stations via the mobile wireless network
For this, the CP must be assigned a fixed IP address, see section Other services and
properties (Page 15).
● SMS and e-mail messages via the mobile wireless network
– Sending and receiving SMS messages on mobile phones or S7 stations
– Sending e-mails to PCs with an Internet connection
In contrast to the two corresponding services of telecontrol communication (see above),
to transfer SMS messages/e-mails via OUC, program blocks need to be used, see
section Program blocks for OUC (Page 105).
You will find examples of applications in the section Configuration examples (Page 22).
S7 communication
Reading / writing data from / to a CPU via the mobile wireless network is possible if S7
communication is enabled in the configuration of the CP.
The following instructions are supported:
● PUT / GET
You will find details on the program blocks in the information system of STEP 7
For S7 communication, the CP requires a fixed IP address, see section Other services and
properties (Page 15).
TeleService via the mobile wireless network
TeleService is possible if the online functions are enabled in the configuration of the CP.
A TeleService connection can be established between an engineering station (PC with
STEP 7) and a remote S7-1200 station via the mobile wireless network and the Internet.
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
You will find application examples of the structure in the section Configuration examples
(Page 22).
For more detailed information, refer to section Establishment of a TeleService connection
(Page 129).
14
Operating Instructions, 04/2017, C79000-G8976-C381-03
CP 1243-7 LTE