Hello,

I have a CPU314C-2Ptp. Unfortunately it has no PROFIBUS (it has Ptp instead). My rack is full, but i need to add one more module, so i decided to add CP 342-5 (6GK7 342-5DA03-0XE0) to the rack and IM153-1 (6ES7 153-1AA03-0XB0). Unfortunately, but i do get bus fault. As a connectors i am using Siemens DB9 (6ES7 972-0BB50-0XA0), cable is around 2 meters. CP 342-5 cannot be used in such a manner?

Hello Arturas;

Please have a look at the following document, it describes the differences between an integrated DP port (on a CPU 314C-2DP, for example) and a CP 342-5 as DP masters. The step-by-step description should help you prepare the configuration and the setup of the required functions DP_Send and DP_Recv (for the CP 342-5):

What should you watch out for when configuring a CP342-5 as DP master and why is it necessary to call the FC1 'DP_SEND' and FC2 'DP_RECV' functions in the user program of the CPU in order to transfer data?

https://support.industry.siemens.com/cs/ww/en/view/18208090

Hope this helps,

Daniel Chartier

Hello Daniel,

Thank you very much. Works as charm.