Modbus / TCP communication with STEP 7 V5.5

Hi experts,

I have to make a Modbus / TC communication (Master / Client) between an S7-400 PLC (CP-443-1 and S7-OPENMODBUS / TCP packet V5.x 2XV9450-1MB00).

My client requires me to develop with Step 7 V5.5 + SP4.
I have a couple of questions:
1, I can communicate with different (Slave / Server)? How many?
2, There is a application example call of FB108 in version 5.x with Step 7 V5.5?
Thank you.

Best regards,

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Split from Modbus TCP.

Check the link below. There is a pdf doc under documentation. That might help!

http://plc.myforum.ro/modbus-tcp-communication-of-pcs-7-with-third-party-systems-vt4224.html

New question published by m.tahboub is split to a separate thread with the subject Establish communication between S7-300 and communication module cp340- rs232..

Best regards
Jen_Moderator