Communication of S7-300 and S7-1200 via profibus

Hello sir,

I am using s7300 315-2DP and s71200 1215c with slave module 1242-5.

Now i want to communicate s7300 & s71200 via profibus and problem is

s7300 programming in simatic (we using software redundancy)

s71200 programming in Tia portal 

Is it possible to do communication directly from CPU s7300 dp to S71200 slave 1242-5 ? or we need any additional Module for s7300?

Thanks & Regards

Vijayakumar

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Split from S7-1200 as PROFIBUS DP I-slave.

Hello,

this theme was discussed also here

https://support.industry.siemens.com/tf/us/en/posts/how-to-configure-s7-300-and-s7-1200-communication-through-profibus-if-i-have-cm1242-5-module/70767/?page=0&pageSize=10

https://support.industry.siemens.com/tf/us/en/posts/detailed-setup-profibus-slave-s7-1200-cm-1242-5/159638/?page=0&pageSize=10

https://support.industry.siemens.com/tf/ww/en/posts/build-s7-connection-between-s7-300-and-cm1242-5/167227/?page=0&pageSize=10

perhaps it can help you?!