Hello

1-Be sure you have good hardware ( cable,connector,... ) .

2-You can find example of communication between S7-300/400 with Sinamics here:

https://support.industry.siemens.com/cs/ww/en/view/45288241 

Regards

FarForough

Hello

1-Be sure you have good hardware ( cable,connector,... ) .

2-You can find example of communication between S7-300/400 with Sinamics here:

https://support.industry.siemens.com/cs/ww/en/view/45288241 

Regards

 thanks sir for your valuable reply, I already checked A/M recommendation advised by your end, but problem still exist.

1-Be sure you have good hardware ( cable,connector,... ) .

yes cable , connector are working properly.

2-You can find example of communication between S7-300/400 with Sinamics here:

Checked and nothing noticed.

https://support.industry.siemens.com/cs/ww/en/view/45288241

PISCEAN 2010

What is the status of terminating resistors on profibus connectors at PLC & CU unit? Is it ON or OFF? Please check, both end must be ON.

Terminating resistors on profibus connectors at PLC & CU unit are in ON.

Cable , connector are healthy also

is the problem solved or not ?

Please use the SFC14 and SFC15 to read and write the drive words.