Dear all, 

I am in a issue where I need to connect a  S7-400, CPU416-3 with ethernet card 443-1 to a third party PC, it will have to send/receive Telegrams of variable length by a TCP/IP connection. Honestly I am a blank in how to setup the TCP/IP connection, and I cannot find examples that shows how to do this, in either LD, FB or SCL.

Please if someone who can explain how to, knows where there is a well explaining manual or a piece of code showing the steps. Then please share with me.

Best regars

Rolf Hammer

Hello Rolf;

You can do this type of cnnection either using a CP 443-1 or directly on the integrated profinet port of the CPU, your choice.

There are two links, one for each option, both provide access to sample programs that you can use as a basis for your own program (in Simatic Manager):

- How do you configure a TCP connection for data exchange between S7-300 and/or S7-400 by way of Industrial Ethernet CPs?

https://support.industry.siemens.com/cs/us/en/view/22385024

- How do you program the communication blocks FB63 "TSEND", FB64 "TRCV", FB65 "TCON" and FB66 "TDISCON" in order to use the TCP protocol for data exchange by means of the integrated PROFINET interface of an S7-300/S7-400 CPU?

https://support.industry.siemens.com/cs/us/en/view/29737950

Hope this helps,

Daniel Chartier