S7300 plc + cp343-1 lean -> wago

Hi all,

I am tasked with quoting a solution in which our two S7300 PLC's with added 343-1 LEAN CP is supposed to communicate with two WAGO IPC 758.

My client is assuring me that we can use Modbus TCP, so I am looking into that. I have found the examples and I think I found the correct license. Can somebody confirm my item number?

2XV9450-1MB00
S7 - OPEN MODBUS/TCP FOR NCM_CP, SINGLE LICENSE, ON CD

As said, we have two PLC's with each a CP, both are communcating with the same two WAGO PLC's. I am assuming we are the SLAVES. This means each CP has two connections.

Do I need 2 or 4 licenses?
Is it possible to buy this digitally? We would need this rather sooner than later...

Received some information on the Siemens forum:

you need 2 licenses, 1 license for each CPU. How many blocks and connections you use on 1 CPU is not relevant for the license.
You can download the product here: http://support.automation.siemens.com/WW/view/en/103473817/133100.
With this version you can parameterize and test it also without a license.

Wago has a library called s7 db read which allows you to read and write directly to a data block in a siemens cpu. No orogramming required at the siemens cpu.

I have used it with the newer ethernet controller. 750-8xx series.

It might work with your ipc. Worth trying as the license for the siemens modbus fb is too expensive.

Thank you! I appreciate it!

Hi again Rohan,

Just wanted to let you know it works great! You saved my client about 5000 euro's and me a big head ache!

If you are ever in Oklahoma, let me know, I owe you a beer or two!

rohan tandon said:

Wago has a library called s7 db read which allows you to read and write directly to a data block in a siemens cpu. No orogramming required at the siemens cpu.

I have used it with the newer ethernet controller. 750-8xx series.

It might work with your ipc. Worth trying as the license for the siemens modbus fb is too expensive.

Click to expand...

Where can i find this library for wago plcs?! Thank you!