Hello,

I have a remote site with CP 1242-7 V2 and I need to upgrade the firmware for the CP, did any one try to upgrade the CP through the GPRS "2G" connection?

I think the new image is transferred or downloaded first and after that it is applied to the CP? I mean there is no risk if the connection is disconnected?

thanks

Hi,

I think it should work.
have you read the instructions on this Entry?
Sales release and download of firmware 3.1.39 for CP 1242-7 V2, CP 1243-7 LTE, CP 1243-1, CP 1243-8

Regards,

Kirschiaub08

thank you.

I mean if my question was clear, the upgrade of the CP firmware will be done over the GPRS connection not the ethernet connection

Hello Abdel-Qader,

I think, he mean this information:

"You can either install the firmware update via the web server or via the STEP 7 online diagnostics functions, or create a SIMATIC memory card from the Siemens customer support website from which you can download the firmware update. This process is described in the S7-1200 system manual.

If you use a SIMATIC memory card for the installation of the firmware update, the retentive memory is retained. However, if you use the web server or the STEP 7 online diagnostics functions for the installation of the update, the retentive memory is lost.

If you close the web server while executing a firmware update via the web server, you cannot switch the operating mode of the CPU to RUN. In this case, you have to turn the CPU off and on again in order to switch it to the operating mode RUN."

So if you reach the Webserver of CP via GPRS, it should work. But I think, the performance and speed is not very good via GPRS. And the firmware update should not be interrupted.

Thank you, that's my point --> in case the GPRs connection is disrupted, we have to repeat the download again, since once the download is complete it will start install the firmware.

thank you again