Communication Problem TP900 to S7400 by Ethernet

Hello,

I have configured the TP900 comfort panel to manage a sequence programmed on the S7-400 PLC (out of the TIA portal).

I want to test the panel is Reading/Writing the PLC memory (DB´s), that have been referenced on the TIA portal project.

I have a Ethernet connection and I can see the TP900 in the available stations list on the PLC. So, the net connection is right.

However, the panel is not receiving the different DB values forced on the PLC. It seems that there is something pending in the configuration of the panel or the PLC.

I have attached the connectivity configuration on the TP900.

Is it necessary any special declaration on the PLC hardware or PLC net configuration? 

Any suggestion or comments will be grateful.

Thank you!

Hello Parribas,

Perhaps the following faq, might help:

Combined configuration with WinCC (TIA Portal) and STEP 7 V5.x

Pay attention to the slot number: it should be the slotnumber of the CPU.

Best regards,

Wizard

It is working.

Thank you for the specific and useful information!