Hello Experts.

I have s7-400 redundant system and one energy meter on tcp/ip , I want to read some data from energy meter on modbus tcl/ip communication,

Anyone let me know that , is there any requirement of license for this communication? If yes than which license i need to use and how?

I am using the following systems

1.S7-400H tcp/ip

2. Energy meter (Have tcp/ip and holding registers)

3. Step 7 v5.6

Thanks & Regards

Sandeep Bakoliya

Hi Sandeep,

I suggest you have a look at following link. I think you will find almost all the information about how to setup an Modbus TCP/IP communication using S7-400 CPUs.

https://support.industry.siemens.com/cs/ww/en/view/22660304

Hope it helps :)