Dear supporter

I had project that distance from two site is very far, about 1.5 km. So I'm finding the solution that two S7-1200 can connect together via gsm (sim card).

Anyone know this solution please show me the hardware requirement

Thank you !

hi TienTran,

have you seen this FAQs:

How do you diagnose an S7-1200 CPU (with CP 1242-7) over the internet/GPRS network?

Data communication between S7-1200 stations and TeleControl Server Basic V3 via CP 1242-7 V2 and CP 1243-1 (Set 30)

Inter-Station Communication between S7-1200 Stations Using TCSB V3 via CP 1242-7 V2 (Set 31)

you will need a Telecontrollserver for doing this.

regards,

Hello,

You can also use two M874-3.

You will have to create the certificate of both with Security configuration tool and then import them in each M874-3.

Best regards,

Hugo